)]}' { "log": [ { "commit": "4e455c6782bd6bf6a0135c1e1c9f018ec191979e", "tree": "b26d342b454b4829344985c968adf16d092dc534", "parents": [ "105a048a4f35f7a74c7cc20b36dd83658b6ec232", "dce80a56268fffd6b5ea57b3f6ba3d027a68f05e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 10:47:41 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 10:47:41 2010 -0700" }, "message": "Merge branch \u0027sfi-release\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-sfi-2.6\n\n* \u0027sfi-release\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-sfi-2.6:\n SFI: add sysfs interface for SFI tables.\n SFI: add support for v0.81 spec\n" }, { "commit": "105a048a4f35f7a74c7cc20b36dd83658b6ec232", "tree": "043b1110cda0042ba35d8aae59382bb094d0af3f", "parents": [ "00b9b0af5887fed54e899e3b7f5c2ccf5e739def", "9aeead73782c4b8e2a91def36dbf95db28605c95" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 10:43:44 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 10:43:44 2010 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (27 commits)\n Btrfs: add more error checking to btrfs_dirty_inode\n Btrfs: allow unaligned DIO\n Btrfs: drop verbose enospc printk\n Btrfs: Fix block generation verification race\n Btrfs: fix preallocation and nodatacow checks in O_DIRECT\n Btrfs: avoid ENOSPC errors in btrfs_dirty_inode\n Btrfs: move O_DIRECT space reservation to btrfs_direct_IO\n Btrfs: rework O_DIRECT enospc handling\n Btrfs: use async helpers for DIO write checksumming\n Btrfs: don\u0027t walk around with task-\u003estate !\u003d TASK_RUNNING\n Btrfs: do aio_write instead of write\n Btrfs: add basic DIO read/write support\n direct-io: do not merge logically non-contiguous requests\n direct-io: add a hook for the fs to provide its own submit_bio function\n fs: allow short direct-io reads to be completed via buffered IO\n Btrfs: Metadata ENOSPC handling for balance\n Btrfs: Pre-allocate space for data relocation\n Btrfs: Metadata ENOSPC handling for tree log\n Btrfs: Metadata reservation for orphan inodes\n Btrfs: Introduce global metadata reservation\n ...\n" }, { "commit": "e4ce30f3779c2ddaa7dfaa4042209e5dbacbada5", "tree": "cc64c1dcd16b5dbf71ebc8338b339e6fb04abaee", "parents": [ "b899ebeb05da4287ce845976727e3e83dadd25d5", "14ece1028b3ed53ffec1b1213ffc6acaf79ad77c" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 10:26:37 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 10:26:37 2010 -0700" }, "message": "Merge branch \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4\n\n* \u0027for_linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (40 commits)\n ext4: Make fsync sync new parent directories in no-journal mode\n ext4: Drop whitespace at end of lines\n ext4: Fix compat EXT4_IOC_ADD_GROUP\n ext4: Conditionally define compat ioctl numbers\n tracing: Convert more ext4 events to DEFINE_EVENT\n ext4: Add new tracepoints to track mballoc\u0027s buddy bitmap loads\n ext4: Add a missing trace hook\n ext4: restart ext4_ext_remove_space() after transaction restart\n ext4: Clear the EXT4_EOFBLOCKS_FL flag only when warranted\n ext4: Avoid crashing on NULL ptr dereference on a filesystem error\n ext4: Use bitops to read/modify i_flags in struct ext4_inode_info\n ext4: Convert calls of ext4_error() to EXT4_ERROR_INODE()\n ext4: Convert callers of ext4_get_blocks() to use ext4_map_blocks()\n ext4: Add new abstraction ext4_map_blocks() underneath ext4_get_blocks()\n ext4: Use our own write_cache_pages()\n ext4: Show journal_checksum option\n ext4: Fix for ext4_mb_collect_stats()\n ext4: check for a good block group before loading buddy pages\n ext4: Prevent creation of files larger than RLIMIT_FSIZE using fallocate\n ext4: Remove extraneous newlines in ext4_msg() calls\n ...\n\nFixed up trivial conflict in fs/ext4/fsync.c\n" }, { "commit": "55ddf14b04bfe5afaab892a8fb12164b803f1dd5", "tree": "fd6e6f0b9508628fca8d0cadd4ece199201991b2", "parents": [ "a9a0aff5b56d4c40288c000ff09c3f238b6b6fec", "3014420b6b5d0a6483cf5e56c10df180a33e957e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 10:22:06 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 10:22:06 2010 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:\n ieee1394: schedule for removal\n firewire: core: use separate timeout for each transaction\n firewire: core: Fix tlabel exhaustion problem\n firewire: core: make transaction label allocation more robust\n firewire: core: clean up config ROM related defined constants\n ieee1394: mark char device files as not seekable\n firewire: cdev: mark char device files as not seekable\n firewire: ohci: cleanups and fix for nonstandard build without debug facility\n firewire: ohci: wait for PHY register accesses to complete\n firewire: ohci: fix up configuration of TI chips\n firewire: ohci: enable 1394a enhancements\n firewire: ohci: do not clear PHY interrupt status inadvertently\n firewire: ohci: add a function for reading PHY registers\n\nTrivial conflicts in Documentation/feature-removal-schedule.txt\n" }, { "commit": "7eb1053fd00a8f0e2263697638e17da8a251aa74", "tree": "dcb9a521c2866d1d0c7c62503696819ead76961b", "parents": [ "03a3f695cb9776cfa7da5e8e6d34fd20dd56510e", "388bbcade41ee68d2d1ebb51a538380ea48ae599" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:19:55 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:19:55 2010 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:\n Input: usbtouchscreen - support bigger iNexio touchscreens\n Input: ads7846 - return error on regulator_get() failure\n Input: twl4030-vibra - correct the power down sequence\n Input: enable onkey driver of max8925\n Input: use ABS_CNT rather than (ABS_MAX + 1)\n" }, { "commit": "7aac789885512388a66d47280d7e7777ffba1e59", "tree": "af4ac98260268889a422dd264102d2f15d5c1983", "parents": [ "3bccd996276b108c138e8176793a26ecef54d573" ], "author": { "name": "Lee Schermerhorn", "email": "lee.schermerhorn@hp.com", "time": "Wed May 26 14:45:00 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:57 2010 -0700" }, "message": "numa: introduce numa_mem_id()- effective local memory node id\n\nIntroduce numa_mem_id(), based on generic percpu variable infrastructure\nto track \"nearest node with memory\" for archs that support memoryless\nnodes.\n\nDefine API in \u003clinux/topology.h\u003e when CONFIG_HAVE_MEMORYLESS_NODES\ndefined, else stubs. Architectures will define HAVE_MEMORYLESS_NODES\nif/when they support them.\n\nArchs can override definitions of:\n\nnuma_mem_id() - returns node number of \"local memory\" node\nset_numa_mem() - initialize [this cpus\u0027] per cpu variable \u0027numa_mem\u0027\ncpu_to_mem() - return numa_mem for specified cpu; may be used as lvalue\n\nGeneric initialization of \u0027numa_mem\u0027 occurs in __build_all_zonelists().\nThis will initialize the boot cpu at boot time, and all cpus on change of\nnuma_zonelist_order, or when node or memory hot-plug requires zonelist\nrebuild. Archs that support memoryless nodes will need to initialize\n\u0027numa_mem\u0027 for secondary cpus as they\u0027re brought on-line.\n\n[akpm@linux-foundation.org: fix build]\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nSigned-off-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Tejun Heo \u003ctj@kernel.org\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Eric Whitney \u003ceric.whitney@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7281201922a0063fa60804ce39c277fc98142a47", "tree": "4bf089d077b1055e54bc1411dcc0db121d01d9fa", "parents": [ "866707fc2721df8fee637fcf0239628b9231f9ea" ], "author": { "name": "Lee Schermerhorn", "email": "lee.schermerhorn@hp.com", "time": "Wed May 26 14:44:56 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:57 2010 -0700" }, "message": "numa: add generic percpu var numa_node_id() implementation\n\nRework the generic version of the numa_node_id() function to use the new\ngeneric percpu variable infrastructure.\n\nGuard the new implementation with a new config option:\n\n CONFIG_USE_PERCPU_NUMA_NODE_ID.\n\nArchs which support this new implemention will default this option to \u0027y\u0027\nwhen NUMA is configured. This config option could be removed if/when all\narchs switch over to the generic percpu implementation of numa_node_id().\nArch support involves:\n\n 1) converting any existing per cpu variable implementations to use\n this implementation. x86_64 is an instance of such an arch.\n 2) archs that don\u0027t use a per cpu variable for numa_node_id() will\n need to initialize the new per cpu variable \"numa_node\" as cpus\n are brought on-line. ia64 is an example.\n 3) Defining USE_PERCPU_NUMA_NODE_ID in arch dependent Kconfig--e.g.,\n when NUMA is configured. This is required because I have\n retained the old implementation by default to allow archs to\n be modified incrementally, as desired.\n\nSubsequent patches will convert x86_64 and ia64 to use this implemenation.\n\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Tejun Heo \u003ctj@kernel.org\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nReviewed-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Eric Whitney \u003ceric.whitney@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ae6afc3f5cf53fb97bac2d0a209bb465952742e7", "tree": "541e3f4ed4f2600ffe239e2f23341055199329b1", "parents": [ "09eeb1f5f4d9b52ab57820160dea6027bbea82a3" ], "author": { "name": "jan Blunck", "email": "jblunck@suse.de", "time": "Wed May 26 14:44:48 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:56 2010 -0700" }, "message": "vfs: introduce noop_llseek()\n\nThis is an implementation of -\u003ellseek useable for the rare special case\nwhen userspace expects the seek to succeed but the (device) file is\nactually not able to perform the seek. In this case you use noop_llseek()\ninstead of falling back to the default implementation of -\u003ellseek.\n\nSigned-off-by: Jan Blunck \u003cjblunck@suse.de\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9d85cba718efeef9ca00ce3f7f34f5880737aa9b", "tree": "d445d35d915b65dac171e58f83c75feb15d625fd", "parents": [ "b83733639a494d5f42fa00a2506563fbd2d3015d" ], "author": { "name": "Jeff Moyer", "email": "jmoyer@redhat.com", "time": "Wed May 26 14:44:26 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:53 2010 -0700" }, "message": "aio: fix the compat vectored operations\n\nThe aio compat code was not converting the struct iovecs from 32bit to\n64bit pointers, causing either EINVAL to be returned from io_getevents, or\nEFAULT as the result of the I/O. This patch passes a compat flag to\nio_submit to signal that pointer conversion is necessary for a given iocb\narray.\n\nA variant of this was tested by Michael Tokarev. I have also updated the\nlibaio test harness to exercise this code path with good success.\nFurther, I grabbed a copy of ltp and ran the\ntestcases/kernel/syscall/readv and writev tests there (compiled with -m32\non my 64bit system). All seems happy, but extra eyes on this would be\nwelcome.\n\n[akpm@linux-foundation.org: coding-style fixes]\n[akpm@linux-foundation.org: fix CONFIG_COMPAT\u003dn build]\nSigned-off-by: Jeff Moyer \u003cjmoyer@redhat.com\u003e\nReported-by: Michael Tokarev \u003cmjt@tls.msk.ru\u003e\nCc: Zach Brown \u003czach.brown@oracle.com\u003e\nCc: \u003cstable@kernel.org\u003e\t\t[2.6.35.1]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b83733639a494d5f42fa00a2506563fbd2d3015d", "tree": "5aea71a7b0da140d839cc6109091350e1fbc8868", "parents": [ "5b530fc18324602e1ecb70cd280c2194b2656a5e" ], "author": { "name": "Jeff Moyer", "email": "jmoyer@redhat.com", "time": "Wed May 26 14:44:25 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:53 2010 -0700" }, "message": "compat: factor out compat_rw_copy_check_uvector from compat_do_readv_writev\n\nIt was reported in http://lkml.org/lkml/2010/3/8/309 that 32 bit readv and\nwritev AIO operations were not functioning properly. It turns out that\nthe code to convert the 32bit io vectors to 64 bits was never written.\nThe results of that can be pretty bad, but in my testing, it mostly ended\nup in generating EFAULT as we walked off the list of I/O vectors provided.\n\nThis patch set fixes the problem in my environment. are greatly\nappreciated.\n\nThis patch:\n\nFactor out code that will be used by both compat_do_readv_writev and the\ncompat aio submission code paths.\n\nSigned-off-by: Jeff Moyer \u003cjmoyer@redhat.com\u003e\nReported-by: Michael Tokarev \u003cmjt@tls.msk.ru\u003e\nCc: Zach Brown \u003czach.brown@oracle.com\u003e\nCc: \u003cstable@kernel.org\u003e\t\t[2.6.35.1]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "99d1bd2c131b2da10cf451c69e5b8c51761a901b", "tree": "ffa4f67b8e092c0a19065160f7beada200334f01", "parents": [ "6d256fa8868b4509310ea201c2d2c04fabea96ab" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Wed May 26 14:44:20 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:53 2010 -0700" }, "message": "dma-mapping: remove deprecated dma_sync_single and dma_sync_sg API\n\nSince 2.6.5, it had been commented, \u0027for backwards compatibility,\nremoved in 2.7.x\u0027. Since 2.6.31, it have been marked as __deprecated.\n\nI think that we can remove the API safely now.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5fd75a7850b5156aa93c9fb6404adb8f563b6e02", "tree": "1b5f21a907eb8182e2642c7dee73274d04d24a07", "parents": [ "38388301b7b9d2921b58cfa1cd9b14c02d508c63" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Wed May 26 14:44:18 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:52 2010 -0700" }, "message": "dma-mapping: remove unnecessary sync_single_range_* in dma_map_ops\n\nsync_single_range_for_cpu and sync_single_range_for_device hooks are\nunnecessary because sync_single_for_cpu and sync_single_for_device can\nbe used instead.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nReviewed-by: Konrad Rzeszutek Wilk \u003ckonrad.wilk@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "38388301b7b9d2921b58cfa1cd9b14c02d508c63", "tree": "921b3379310e83ebef9fe4d47cb178ee928b4a85", "parents": [ "712d3e22a85156c00bd70dc35efe63e6765b122b" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Wed May 26 14:44:18 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:52 2010 -0700" }, "message": "swiotlb: remove unnecessary swiotlb_sync_single_range_*\n\nswiotlb_sync_single_range_for_cpu and swiotlb_sync_single_range_for_device\nare unnecessary because swiotlb_sync_single_for_cpu and\nswiotlb_sync_single_for_device can be used instead.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nReviewed-by: Konrad Rzeszutek Wilk \u003ckonrad.wilk@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5960164fde9bc2f2a99e751d3393faea316e7e36", "tree": "eb4340c46fd459a9a078a9b994b5e940b68a875e", "parents": [ "0a14a130cac9c6826bc81a089b12ab5cbb2b97fc" ], "author": { "name": "Joe Eykholt", "email": "jeykholt@cisco.com", "time": "Wed May 26 14:44:13 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:52 2010 -0700" }, "message": "lib/random32: export pseudo-random number generator for modules\n\nThis patch moves the definition of struct rnd_state and the inline\n__seed() function to linux/random.h. It renames the static __random32()\nfunction to prandom32() and exports it for use in modules.\n\nprandom32() is useful as a privately-seeded pseudo random number generator\nthat can give the same result every time it is initialized.\n\nFor FCoE FC-BB-6 VN2VN mode self-selected unique FC address generation, we\nneed an pseudo-random number generator seeded with the 64-bit world-wide\nport name. A truly random generator or one seeded with randomness won\u0027t\ndo because the same sequence of numbers should be generated each time we\nboot or the link comes up.\n\nA prandom32_seed() inline function is added to the header file. It is\ninlined not for speed, but so the function won\u0027t be expanded in the base\nkernel, but only in the module that uses it.\n\nSigned-off-by: Joe Eykholt \u003cjeykholt@cisco.com\u003e\nAcked-by: Matt Mackall \u003cmpm@selenic.com\u003e\nCc: Theodore Ts\u0027o \u003ctytso@mit.edu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0a14a130cac9c6826bc81a089b12ab5cbb2b97fc", "tree": "33ab16eec8619bd6187740e2d994b6f058f1bc7d", "parents": [ "f106eee10038c2ee5b6056aaf3f6d5229be6dcdd" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed May 26 14:44:12 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:52 2010 -0700" }, "message": "INIT_SIGHAND: use SIG_DFL instead of NULL\n\nCosmetic, no changes in the compiled code. Just s/NULL/SIG_DFL/ to make\nit more readable and grep-friendly.\n\nNote: probably SIG_IGN makes more sense, we could kill ignore_signals().\nBut then kernel_init() should do flush_signal_handlers() before exec().\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Eric Biederman \u003cebiederm@xmission.com\u003e\nCc: Herbert Poetzl \u003cherbert@13thfloor.at\u003e\nCc: Mathias Krause \u003cMathias.Krause@secunet.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f20011457f41c11edb5ea5038ad0c8ea9f392023", "tree": "428377008bd670bc18e6a7bc140bbcb6c275e9f9", "parents": [ "fa2755e20ab0c7215d99c2dc7c262e98a09b01df" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed May 26 14:44:10 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:52 2010 -0700" }, "message": "pids: init_struct_pid.tasks should never see the swapper process\n\n\"statically initialize struct pid for swapper\" commit 820e45db says:\n\n\tStatically initialize a struct pid for the swapper process (pid_t \u003d\u003d 0)\n\tand attach it to init_task. This is needed so task_pid(), task_pgrp()\n\tand task_session() interfaces work on the swapper process also.\n\nOK, but:\n\n\t- it doesn\u0027t make sense to add init_task.pids[].node into\n\t init_struct_pid.tasks[], and in fact this just wrong.\n\n\t idle threads are special, they shouldn\u0027t be visible on any\n\t global list. In particular do_each_pid_task(init_struct_pid)\n\t shouldn\u0027t see swapper.\n\n\t This is the actual reason why kill(0, SIGKILL) from /sbin/init\n\t (which starts with 0,0 special pids) crashes the kernel. The\n\t signal sent to pgid/sid \u003d\u003d 0 must never see idle threads, even\n\t if the previous patch fixed the crash itself.\n\n\t- we have other idle threads running on the non-boot CPUs, see\n\t the next patch.\n\nChange INIT_STRUCT_PID/INIT_PID_LINK to create the empty/unhashed\nhlist_head/hlist_node. Like any other idle thread swapper can never exit,\nso detach_pid()-\u003e__hlist_del() is not possible, but we could change\nINIT_PID_LINK() to set pprev \u003d \u0026next if needed.\n\nAll we need is the valid swapper-\u003epids[].pid \u003d\u003d \u0026init_struct_pid.\n\nReported-by: Mathias Krause \u003cmathias.krause@secunet.com\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Eric Biederman \u003cebiederm@xmission.com\u003e\nCc: Herbert Poetzl \u003cherbert@13thfloor.at\u003e\nCc: Mathias Krause \u003cMathias.Krause@secunet.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fa2755e20ab0c7215d99c2dc7c262e98a09b01df", "tree": "6e28b6ea4984bc22e1a2d16afd71d0e6e65da90c", "parents": [ "72680a191b934377430032f93af15ef50aafb3a8" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed May 26 14:44:08 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:51 2010 -0700" }, "message": "INIT_TASK() should initialize -\u003ethread_group list\n\nThe trivial /sbin/init doing\n\n\tint main(void)\n\t{\n\t\tkill(0, SIGKILL)\n\t}\n\ncrashes the kernel.\n\nThis happens because __kill_pgrp_info(init_struct_pid) also sends SIGKILL\nto the swapper process which runs with the uninitialized -\u003ethread_group.\n\nChange INIT_TASK() to initialize -\u003ethread_group properly.\n\nNote: the real problem is that the swapper process must not be visible to\nsignals, see the next patch. But this change is right anyway and fixes\nthe crash.\n\nReported-and-tested-by: Mathias Krause \u003cmathias.krause@secunet.com\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Eric Biederman \u003cebiederm@xmission.com\u003e\nCc: Herbert Poetzl \u003cherbert@13thfloor.at\u003e\nCc: Mathias Krause \u003cMathias.Krause@secunet.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nAcked-by: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "72680a191b934377430032f93af15ef50aafb3a8", "tree": "e6f41babe66bf642204b3d92e793f5071739b1d2", "parents": [ "bd4fb654e3a0d83ca8cb138c5e3e6e65407e119c" ], "author": { "name": "Hedi Berriche", "email": "hedi@sgi.com", "time": "Wed May 26 14:44:06 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:51 2010 -0700" }, "message": "pids: increase pid_max based on num_possible_cpus\n\nOn a system with a substantial number of processors, the early default\npid_max of 32k will not be enough. A system with 1664 CPU\u0027s, there are\n25163 processes started before the login prompt. It\u0027s estimated that with\n2048 CPU\u0027s we will pass the 32k limit. With 4096, we\u0027ll reach that limit\nvery early during the boot cycle, and processes would stall waiting for an\navailable pid.\n\nThis patch increases the early maximum number of pids available, and\nincreases the minimum number of pids that can be set during runtime.\n\n[akpm@linux-foundation.org: fix warnings]\nSigned-off-by: Hedi Berriche \u003chedi@sgi.com\u003e\nSigned-off-by: Mike Travis \u003ctravis@sgi.com\u003e\nSigned-off-by: Robin Holt \u003cholt@sgi.com\u003e\nAcked-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: Greg KH \u003cgregkh@suse.de\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: John Stoffel \u003cjohn@stoffel.org\u003e\nCc: Jack Steiner \u003csteiner@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7a88d6286240f1e8a0cf9c07252e1576169020f5", "tree": "8fc7d9d6b00a8f2b319f78b1dd9db489395a99fd", "parents": [ "058f88d672b3161fe511ebe2996c3faef63c1c8e" ], "author": { "name": "Alexandre Bounine", "email": "alexandre.bounine@idt.com", "time": "Wed May 26 14:44:04 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:51 2010 -0700" }, "message": "rapidio: add switch domain routines\n\nAdd switch specific domain routines required for 16-bit routing support in\nswitches with hierarchical implementation of routing tables.\n\nSigned-off-by: Alexandre Bounine \u003calexandre.bounine@idt.com\u003e\nCc: Matt Porter \u003cmporter@kernel.crashing.org\u003e\nCc: Li Yang \u003cleoli@freescale.com\u003e\nCc: Kumar Gala \u003cgalak@kernel.crashing.org\u003e\nCc: Thomas Moll \u003cthomas.moll@sysgo.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "058f88d672b3161fe511ebe2996c3faef63c1c8e", "tree": "fb4bb8d93aef661cc9e24e1e6e2e8bd4edc2e764", "parents": [ "011507e49a696462c30914e2eeebcdda33ed30f8" ], "author": { "name": "Alexandre Bounine", "email": "alexandre.bounine@idt.com", "time": "Wed May 26 14:44:03 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:51 2010 -0700" }, "message": "rapidio: modify initialization of switch operations\n\nModify the way how RapidIO switch operations are declared. Multiple\nassignments through the linker script replaced by single initialization\ncall.\n\nSigned-off-by: Alexandre Bounine \u003calexandre.bounine@idt.com\u003e\nCc: Matt Porter \u003cmporter@kernel.crashing.org\u003e\nCc: Li Yang \u003cleoli@freescale.com\u003e\nCc: Kumar Gala \u003cgalak@kernel.crashing.org\u003e\nCc: Thomas Moll \u003cthomas.moll@sysgo.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "933af4a6c4913ab4c0691c8fb27fc305063889cd", "tree": "5bc7b63482131f184e006ef0d3346aac79d300cb", "parents": [ "a52c8f521fed43bce53451d7dfddf2b42a2af689" ], "author": { "name": "Thomas Moll", "email": "thomas.moll@sysgo.com", "time": "Wed May 26 14:44:01 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:51 2010 -0700" }, "message": "rapidio: add enabling SRIO port RX and TX\n\nAdd the functionality to enable Input receiver and Output transmitter of\nevery port, to allow non-maintenance traffic.\n\nSigned-off-by: Thomas Moll \u003cthomas.moll@sysgo.com\u003e\nSigned-off-by: Alexandre Bounine \u003cabounine@tundra.com\u003e\nCc: Matt Porter \u003cmporter@kernel.crashing.org\u003e\nCc: Li Yang \u003cleoli@freescale.com\u003e\nCc: Kumar Gala \u003cgalak@kernel.crashing.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e5cabeb3d60f9cd3e3950aff071319ae0e2d08d8", "tree": "e866f1a9076608630a40f21f0a50c073dedb0e57", "parents": [ "818a04a0bb93643d57dd8935815de2ff307b58a3" ], "author": { "name": "Alexandre Bounine", "email": "alexandre.bounine@idt.com", "time": "Wed May 26 14:43:59 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:50 2010 -0700" }, "message": "rapidio: add Port-Write handling for EM\n\nAdd RapidIO Port-Write message handling in the context of Error\n Management Extensions Specification Rev.1.3.\n\nSigned-off-by: Alexandre Bounine \u003calexandre.bounine@idt.com\u003e\nTested-by: Thomas Moll \u003cthomas.moll@sysgo.com\u003e\nCc: Matt Porter \u003cmporter@kernel.crashing.org\u003e\nCc: Li Yang \u003cleoli@freescale.com\u003e\nCc: Kumar Gala \u003cgalak@kernel.crashing.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "07590ff03935a2efbc03bc7861f20c059576a479", "tree": "2da1ee2032e1425a138bc2864066a2e10533ce64", "parents": [ "f67231f80126f4e08c79c7b2056989c5c89ad4c6" ], "author": { "name": "Alexandre Bounine", "email": "alexandre.bounine@idt.com", "time": "Wed May 26 14:43:57 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:50 2010 -0700" }, "message": "rapidio: add IDT CPS/TSI switches\n\nExtentions to RapidIO switch support:\n\n1. modify switch route operation declarations to allow using single\n switch-specific file for family of switches that share the same route\n table operations.\n\n2. add standard route table operations for switches that that support\n route table manipulation registers as defined in the Rev.1.3 of RapidIO\n specification.\n\n3. add clear-route-table operation for switches\n\n4. add CPSxx and TSIxxx families of RapidIO switches\n\nSigned-off-by: Alexandre Bounine \u003calexandre.bounine@idt.com\u003e\nTested-by: Thomas Moll \u003cthomas.moll@sysgo.com\u003e\nCc: Matt Porter \u003cmporter@kernel.crashing.org\u003e\nCc: Li Yang \u003cleoli@freescale.com\u003e\nCc: Kumar Gala \u003cgalak@kernel.crashing.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "31a7c4746e9925512afab30557dd445d677cc802", "tree": "7f7b39331aa51b77c159b046d406b12aec24de11", "parents": [ "0a2b9d4c79671b05956806ede5d054e03ae56280" ], "author": { "name": "Manfred Spraul", "email": "manfred@colorfullife.com", "time": "Wed May 26 14:43:42 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:49 2010 -0700" }, "message": "ipc/sem.c: cacheline align the ipc spinlock for semaphores\n\nCacheline align the spinlock for sysv semaphores. Without the patch, the\nspinlock and sem_otime [written by every semop that modified the array]\nand sem_base [read in the hot path of try_atomic_semop()] can be in the\nsame cacheline.\n\nSigned-off-by: Manfred Spraul \u003cmanfred@colorfullife.com\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nCc: Zach Brown \u003czach.brown@oracle.com\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b957e043ee557ca9b6bc451755ecd849b28852a4", "tree": "cd5046c854264a71a2de6261a0d2996a098b5c88", "parents": [ "e6bde73b07edeb703d4c89c1daabc09c303de11f" ], "author": { "name": "Akinobu Mita", "email": "akinobu.mita@gmail.com", "time": "Wed May 26 14:43:29 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:47 2010 -0700" }, "message": "notifier: change notifier_from_errno(0) to return NOTIFY_OK\n\nThis changes notifier_from_errno(0) to be NOTIFY_OK instead of\nNOTIFY_STOP_MASK | NOTIFY_OK.\n\nCurrently, the notifiers which return encapsulated errno value have to\ndo something like this:\n\n\terr \u003d do_something(); // returns -errno\n\tif (err)\n\t\treturn notifier_from_errno(err);\n\telse\n\t\treturn NOTIFY_OK;\n\nThis change makes the above code simple:\n\n\terr \u003d do_something(); // returns -errno\n\n\treturn return notifier_from_errno(err);\n\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b3ac022cb9dc5883505a88b159d1b240ad1ef405", "tree": "bffa035303cbe3c5bde048ac3d3154fb57059e2d", "parents": [ "dd98acf74762764fbc4382a1d9a244f11a2658cc" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed May 26 14:43:24 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:47 2010 -0700" }, "message": "proc: turn signal_struct-\u003ecount into \"int nr_threads\"\n\nNo functional changes, just s/atomic_t count/int nr_threads/.\n\nWith the recent changes this counter has a single user, get_nr_threads()\nAnd, none of its callers need the really accurate number of threads, not\nto mention each caller obviously races with fork/exit. It is only used to\nreport this value to the user-space, except first_tid() uses it to avoid\nthe unnecessary while_each_thread() loop in the unlikely case.\n\nIt is a bit sad we need a word in struct signal_struct for this, perhaps\nwe can change get_nr_threads() to approximate the number of threads using\nsignal-\u003elive and kill -\u003enr_threads later.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7e49827cc937a742ae02078b483e3eb78f791a2a", "tree": "0f3e0a8483a41b2221c74b8286b2349af03dab04", "parents": [ "6e1be45aa6ba6a36c0312f65ecf311135c73001d" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed May 26 14:43:22 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:47 2010 -0700" }, "message": "proc: get_nr_threads() doesn\u0027t need -\u003esiglock any longer\n\nNow that task-\u003esignal can\u0027t go away get_nr_threads() doesn\u0027t need\n-\u003esiglock to read signal-\u003ecount.\n\nAlso, make it inline, move into sched.h, and convert 2 other proc users of\nsignal-\u003ecount to use this (now trivial) helper.\n\nHenceforth get_nr_threads() is the only valid user of signal-\u003ecount, we\nare ready to turn it into \"int nr_threads\" or, perhaps, kill it.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a705be6b5e8b05f2ae51536ec709de921960326c", "tree": "a4d71651807dabe2dc48bd36cf2e954d7ef967a8", "parents": [ "d40e48e02f3785b9342ee4eb3d7cc9f12981b7f5" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed May 26 14:43:19 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:46 2010 -0700" }, "message": "kill the obsolete thread_group_cputime_free() helper\n\nKill the empty thread_group_cputime_free() helper. It was needed to free\nthe per-cpu data which we no longer have.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Veaceslav Falico \u003cvfalico@redhat.com\u003e\nCc: Stanislaw Gruszka \u003csgruszka@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b7b8ff6373d4b910af081f76888395e6df53249d", "tree": "128a1b2cf026fb8b9791eaefb6f79f872999a5c6", "parents": [ "4ada856fb0ee62f6fe3aac3de726deac0640d929" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed May 26 14:43:18 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:46 2010 -0700" }, "message": "signals: kill the awful task_rq_unlock_wait() hack\n\nNow that task-\u003esignal can\u0027t go away we can revert the horrible hack added\nby ad474caca3e2a0550b7ce0706527ad5ab389a4d4 (\"fix for\naccount_group_exec_runtime(), make sure -\u003esignal can\u0027t be freed under\nrq-\u003elock\").\n\nAnd we can do more cleanups sched_stats.h/posix-cpu-timers.c later.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Alan Cox \u003calan@linux.intel.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ea6d290ca34c4fd91b7348338c0cc7bdeff94a35", "tree": "6e9bd367650d9233c5b6cf1059845f17cb1bc460", "parents": [ "4dec2a91fd7e8815d730afbfdcf085cbf53433ac" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed May 26 14:43:16 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:46 2010 -0700" }, "message": "signals: make task_struct-\u003esignal immutable/refcountable\n\nWe have a lot of problems with accessing task_struct-\u003esignal, it can\n\"disappear\" at any moment. Even current can\u0027t use its -\u003esignal safely\nafter exit_notify(). -\u003esiglock helps, but it is not convenient, not\nalways possible, and sometimes it makes sense to use task-\u003esignal even\nafter this task has already dead.\n\nThis patch adds the reference counter, sigcnt, into signal_struct. This\nreference is owned by task_struct and it is dropped in\n__put_task_struct(). Perhaps it makes sense to export\nget/put_signal_struct() later, but currently I don\u0027t see the immediate\nreason.\n\nRename __cleanup_signal() to free_signal_struct() and unexport it. With\nthe previous changes it does nothing except kmem_cache_free().\n\nChange __exit_signal() to not clear/free -\u003esignal, it will be freed when\nthe last reference to any thread in the thread group goes away.\n\nNote:\n\t- when the last thead exits signal-\u003etty can point to nowhere, see\n\t the next patch.\n\n\t- with or without this patch signal_struct-\u003ecount should go away,\n\t or at least it should be \"int nr_threads\" for fs/proc. This will\n\t be addressed later.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Alan Cox \u003calan@linux.intel.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "09faef11df8c559a23e2405d123cb2683733a79a", "tree": "db8e4c94677be8afebde938c2e6b7ba07b6b6db0", "parents": [ "9c3391684415c9dca239130d9e433a60a4edf04b" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed May 26 14:43:11 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:46 2010 -0700" }, "message": "exit: change zap_other_threads() to count sub-threads\n\nChange zap_other_threads() to return the number of other sub-threads found\non -\u003ethread_group list.\n\nOther changes are cosmetic:\n\n\t- change the code to use while_each_thread() helper\n\n\t- remove the obsolete comment about SIGKILL/SIGSTOP\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Veaceslav Falico \u003cvfalico@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c70a626d3eba373514c72287c93588b6974a0059", "tree": "c23b890cbbeb824e52e1eaee6812bc88496a246d", "parents": [ "685bfd2c48bb3284d31e73ff3151c957d76deda9" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed May 26 14:43:01 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:45 2010 -0700" }, "message": "umh: creds: kill subprocess_info-\u003ecred logic\n\nNow that nobody ever changes subprocess_info-\u003ecred we can kill this member\nand related code. ____call_usermodehelper() always runs in the context of\nfreshly forked kernel thread, it has the proper -\u003ecred copied from its\nparent kthread, keventd.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nAcked-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "685bfd2c48bb3284d31e73ff3151c957d76deda9", "tree": "177210787515f48c0eaad5216bd012f4a2fb2149", "parents": [ "898b374af6f71041bd3bceebe257e564f3f1d458" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed May 26 14:43:00 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:45 2010 -0700" }, "message": "umh: creds: convert call_usermodehelper_keys() to use subprocess_info-\u003einit()\n\ncall_usermodehelper_keys() uses call_usermodehelper_setkeys() to change\nsubprocess_info-\u003ecred in advance. Now that we have info-\u003einit() we can\nchange this code to set tgcred-\u003esession_keyring in context of execing\nkernel thread.\n\nNote: since currently call_usermodehelper_keys() is never called with\nUMH_NO_WAIT, call_usermodehelper_keys()-\u003ekey_get() and umh_keys_cleanup()\nare not really needed, we could rely on install_session_keyring_to_cred()\nwhich does key_get() on success.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nAcked-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "898b374af6f71041bd3bceebe257e564f3f1d458", "tree": "b1be6fd3cca69becfc75787eab906338f363d3cd", "parents": [ "a06a4dc3a08201ff6a8a958f935b3cbf7744115f" ], "author": { "name": "Neil Horman", "email": "nhorman@tuxdriver.com", "time": "Wed May 26 14:42:59 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:44 2010 -0700" }, "message": "exec: replace call_usermodehelper_pipe with use of umh init function and resolve limit\n\nThe first patch in this series introduced an init function to the\ncall_usermodehelper api so that processes could be customized by caller.\nThis patch takes advantage of that fact, by customizing the helper in\ndo_coredump to create the pipe and set its core limit to one (for our\nrecusrsion check). This lets us clean up the previous uglyness in the\nusermodehelper internals and factor call_usermodehelper out entirely.\nWhile I\u0027m at it, we can also modify the helper setup to look for a core\nlimit value of 1 rather than zero for our recursion check\n\nSigned-off-by: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nReviewed-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a06a4dc3a08201ff6a8a958f935b3cbf7744115f", "tree": "b338edde5edb31f51e0b7eb86e6c4ce8063c703f", "parents": [ "065add3941bdca54fe04ed3471a96bce9af88793" ], "author": { "name": "Neil Horman", "email": "nhorman@tuxdriver.com", "time": "Wed May 26 14:42:58 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:44 2010 -0700" }, "message": "kmod: add init function to usermodehelper\n\nAbout 6 months ago, I made a set of changes to how the core-dump-to-a-pipe\nfeature in the kernel works. We had reports of several races, including\nsome reports of apps bypassing our recursion check so that a process that\nwas forked as part of a core_pattern setup could infinitely crash and\nrefork until the system crashed.\n\nWe fixed those by improving our recursion checks. The new check basically\nrefuses to fork a process if its core limit is zero, which works well.\n\nUnfortunately, I\u0027ve been getting grief from maintainer of user space\nprograms that are inserted as the forked process of core_pattern. They\ncontend that in order for their programs (such as abrt and apport) to\nwork, all the running processes in a system must have their core limits\nset to a non-zero value, to which I say \u0027yes\u0027. I did this by design, and\nthink thats the right way to do things.\n\nBut I\u0027ve been asked to ease this burden on user space enough times that I\nthought I would take a look at it. The first suggestion was to make the\nrecursion check fail on a non-zero \u0027special\u0027 number, like one. That way\nthe core collector process could set its core size ulimit to 1, and enable\nthe kernel\u0027s recursion detection. This isn\u0027t a bad idea on the surface,\nbut I don\u0027t like it since its opt-in, in that if a program like abrt or\napport has a bug and fails to set such a core limit, we\u0027re left with a\nrecursively crashing system again.\n\nSo I\u0027ve come up with this. What I\u0027ve done is modify the\ncall_usermodehelper api such that an extra parameter is added, a function\npointer which will be called by the user helper task, after it forks, but\nbefore it exec\u0027s the required process. This will give the caller the\nopportunity to get a call back in the processes context, allowing it to do\nwhatever it needs to to the process in the kernel prior to exec-ing the\nuser space code. In the case of do_coredump, this callback is ues to set\nthe core ulimit of the helper process to 1. This elimnates the opt-in\nproblem that I had above, as it allows the ulimit for core sizes to be set\nto the value of 1, which is what the recursion check looks for in\ndo_coredump.\n\nThis patch:\n\nCreate new function call_usermodehelper_fns() and allow it to assign both\nan init and cleanup function, as we\u0027ll as arbitrary data.\n\nThe init function is called from the context of the forked process and\nallows for customization of the helper process prior to calling exec. Its\nreturn code gates the continuation of the process, or causes its exit.\nAlso add an arbitrary data pointer to the subprocess_info struct allowing\nfor data to be passed from the caller to the new process, and the\nsubsequent cleanup process\n\nAlso, use this patch to cleanup the cleanup function. It currently takes\nan argp and envp pointer for freeing, which is ugly. Lets instead just\nmake the subprocess_info structure public, and pass that to the cleanup\nand init routines\n\nSigned-off-by: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nReviewed-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0ac0c0d0f837c499afd02a802f9cf52d3027fa3b", "tree": "c20a7306d4b727722556af1aa5565855686aee07", "parents": [ "6adef3ebe570bcde67fd6c16101451ddde5712b5" ], "author": { "name": "Jack Steiner", "email": "steiner@sgi.com", "time": "Wed May 26 14:42:51 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:44 2010 -0700" }, "message": "cpusets: randomize node rotor used in cpuset_mem_spread_node()\n\nSome workloads that create a large number of small files tend to assign\ntoo many pages to node 0 (multi-node systems). Part of the reason is that\nthe rotor (in cpuset_mem_spread_node()) used to assign nodes starts at\nnode 0 for newly created tasks.\n\nThis patch changes the rotor to be initialized to a random node number of\nthe cpuset.\n\n[akpm@linux-foundation.org: fix layout]\n[Lee.Schermerhorn@hp.com: Define stub numa_random() for !NUMA configuration]\nSigned-off-by: Jack Steiner \u003csteiner@sgi.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Jack Steiner \u003csteiner@sgi.com\u003e\nCc: Robin Holt \u003cholt@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6adef3ebe570bcde67fd6c16101451ddde5712b5", "tree": "0f60e2a4d01850ae33aee6cefc7a59845ede89a0", "parents": [ "2c488db27b614816024e7994117f599337de0f34" ], "author": { "name": "Jack Steiner", "email": "steiner@sgi.com", "time": "Wed May 26 14:42:49 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:44 2010 -0700" }, "message": "cpusets: new round-robin rotor for SLAB allocations\n\nWe have observed several workloads running on multi-node systems where\nmemory is assigned unevenly across the nodes in the system. There are\nnumerous reasons for this but one is the round-robin rotor in\ncpuset_mem_spread_node().\n\nFor example, a simple test that writes a multi-page file will allocate\npages on nodes 0 2 4 6 ... Odd nodes are skipped. (Sometimes it\nallocates on odd nodes \u0026 skips even nodes).\n\nAn example is shown below. The program \"lfile\" writes a file consisting\nof 10 pages. The program then mmaps the file \u0026 uses get_mempolicy(...,\nMPOL_F_NODE) to determine the nodes where the file pages were allocated.\nThe output is shown below:\n\n\t# ./lfile\n\t allocated on nodes: 2 4 6 0 1 2 6 0 2\n\nThere is a single rotor that is used for allocating both file pages \u0026 slab\npages. Writing the file allocates both a data page \u0026 a slab page\n(buffer_head). This advances the RR rotor 2 nodes for each page\nallocated.\n\nA quick confirmation seems to confirm this is the cause of the uneven\nallocation:\n\n\t# echo 0 \u003e/dev/cpuset/memory_spread_slab\n\t# ./lfile\n\t allocated on nodes: 6 7 8 9 0 1 2 3 4 5\n\nThis patch introduces a second rotor that is used for slab allocations.\n\nSigned-off-by: Jack Steiner \u003csteiner@sgi.com\u003e\nAcked-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Jack Steiner \u003csteiner@sgi.com\u003e\nCc: Robin Holt \u003cholt@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "907860ed381a31b0102f362df67c1c5cae6ef050", "tree": "4f47a6fe898b1f45da505fc0c27d98e66d42aa46", "parents": [ "ac39cf8cb86c45eeac6a592ce0d58f9021a97235" ], "author": { "name": "Kirill A. Shutemov", "email": "kirill@shutemov.name", "time": "Wed May 26 14:42:46 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:44 2010 -0700" }, "message": "cgroups: make cftype.unregister_event() void-returning\n\nSince we are unable to handle an error returned by\ncftype.unregister_event() properly, let\u0027s make the callback\nvoid-returning.\n\nmem_cgroup_unregister_event() has been rewritten to be a \"never fail\"\nfunction. On mem_cgroup_usage_register_event() we save old buffer for\nthresholds array and reuse it in mem_cgroup_usage_unregister_event() to\navoid allocation.\n\nSigned-off-by: Kirill A. Shutemov \u003ckirill@shutemov.name\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Phil Carmody \u003cext-phil.2.carmody@nokia.com\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ac39cf8cb86c45eeac6a592ce0d58f9021a97235", "tree": "7321cafb0a1f8f2727c86f9d29159751df856c59", "parents": [ "315c1998e10527ff364a9883048455e609bc7232" ], "author": { "name": "akpm@linux-foundation.org", "email": "akpm@linux-foundation.org", "time": "Wed May 26 14:42:46 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:44 2010 -0700" }, "message": "memcg: fix mis-accounting of file mapped racy with migration\n\nFILE_MAPPED per memcg of migrated file cache is not properly updated,\nbecause our hook in page_add_file_rmap() can\u0027t know to which memcg\nFILE_MAPPED should be counted.\n\nBasically, this patch is for fixing the bug but includes some big changes\nto fix up other messes.\n\nNow, at migrating mapped file, events happen in following sequence.\n\n 1. allocate a new page.\n 2. get memcg of an old page.\n 3. charge ageinst a new page before migration. But at this point,\n no changes to new page\u0027s page_cgroup, no commit for the charge.\n (IOW, PCG_USED bit is not set.)\n 4. page migration replaces radix-tree, old-page and new-page.\n 5. page migration remaps the new page if the old page was mapped.\n 6. Here, the new page is unlocked.\n 7. memcg commits the charge for newpage, Mark the new page\u0027s page_cgroup\n as PCG_USED.\n\nBecause \"commit\" happens after page-remap, we can count FILE_MAPPED\nat \"5\", because we should avoid to trust page_cgroup-\u003emem_cgroup.\nif PCG_USED bit is unset.\n(Note: memcg\u0027s LRU removal code does that but LRU-isolation logic is used\n for helping it. When we overwrite page_cgroup-\u003emem_cgroup, page_cgroup is\n not on LRU or page_cgroup-\u003emem_cgroup is NULL.)\n\nWe can lose file_mapped accounting information at 5 because FILE_MAPPED\nis updated only when mapcount changes 0-\u003e1. So we should catch it.\n\nBTW, historically, above implemntation comes from migration-failure\nof anonymous page. Because we charge both of old page and new page\nwith mapcount\u003d0, we can\u0027t catch\n - the page is really freed before remap.\n - migration fails but it\u0027s freed before remap\nor .....corner cases.\n\nNew migration sequence with memcg is:\n\n 1. allocate a new page.\n 2. mark PageCgroupMigration to the old page.\n 3. charge against a new page onto the old page\u0027s memcg. (here, new page\u0027s pc\n is marked as PageCgroupUsed.)\n 4. page migration replaces radix-tree, page table, etc...\n 5. At remapping, new page\u0027s page_cgroup is now makrked as \"USED\"\n We can catch 0-\u003e1 event and FILE_MAPPED will be properly updated.\n\n And we can catch SWAPOUT event after unlock this and freeing this\n page by unmap() can be caught.\n\n 7. Clear PageCgroupMigration of the old page.\n\nSo, FILE_MAPPED will be correctly updated.\n\nThen, for what MIGRATION flag is ?\n Without it, at migration failure, we may have to charge old page again\n because it may be fully unmapped. \"charge\" means that we have to dive into\n memory reclaim or something complated. So, it\u0027s better to avoid\n charge it again. Before this patch, __commit_charge() was working for\n both of the old/new page and fixed up all. But this technique has some\n racy condtion around FILE_MAPPED and SWAPOUT etc...\n Now, the kernel use MIGRATION flag and don\u0027t uncharge old page until\n the end of migration.\n\nI hope this change will make memcg\u0027s page migration much simpler. This\npage migration has caused several troubles. Worth to add a flag for\nsimplification.\n\nReviewed-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nTested-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nReported-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: \"Kirill A. Shutemov\" \u003ckirill@shutemov.name\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "87946a72283be3de936adc754b7007df7d3e6aeb", "tree": "0593c87ba36bae13d6a6d5dda65ebb41354954f8", "parents": [ "90254a65833b67502d14736410b3857a15535c67" ], "author": { "name": "Daisuke Nishimura", "email": "nishimura@mxp.nes.nec.co.jp", "time": "Wed May 26 14:42:39 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:43 2010 -0700" }, "message": "memcg: move charge of file pages\n\nThis patch adds support for moving charge of file pages, which include\nnormal file, tmpfs file and swaps of tmpfs file. It\u0027s enabled by setting\nbit 1 of \u003ctarget cgroup\u003e/memory.move_charge_at_immigrate.\n\nUnlike the case of anonymous pages, file pages(and swaps) in the range\nmmapped by the task will be moved even if the task hasn\u0027t done page fault,\ni.e. they might not be the task\u0027s \"RSS\", but other task\u0027s \"RSS\" that maps\nthe same file. And mapcount of the page is ignored(the page can be moved\neven if page_mapcount(page) \u003e 1). So, conditions that the page/swap\nshould be met to be moved is that it must be in the range mmapped by the\ntarget task and it must be charged to the old cgroup.\n\n[akpm@linux-foundation.org: coding-style fixes]\n[akpm@linux-foundation.org: fix warning]\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c4b5be98fe78508e7199d6919eb712feba9a4f01", "tree": "9e688dd076cea9213f8bcbda3627aa7941a01879", "parents": [ "796a8e423ac8afe9e98ad96e668f50142bdd7825" ], "author": { "name": "Felipe Balbi", "email": "felipe.balbi@nokia.com", "time": "Wed May 26 14:42:23 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:42 2010 -0700" }, "message": "gpiolib: introduce set_debounce method\n\nA few architectures, like OMAP, allow you to set a debouncing time for the\ngpio before generating the IRQ. Teach gpiolib about that.\n\nMark said:\n: This would be generally useful for embedded systems, especially where\n: the interrupt concerned is a wake source. It allows drivers to avoid\n: spurious interrupts from noisy sources so if the hardware supports it\n: the driver can avoid having to explicitly wait for the signal to become\n: stable and software has to cope with fewer events. We\u0027ve lived without\n: it for quite some time, though.\n\nDavid said:\n: I looked at adding debounce support to the generic GPIO calls (and thus\n: gpiolib) some time back, but decided against it. I forget why at this\n: time (check list archives) but it wasn\u0027t because of lack of utility in\n: certain contexts.\n:\n: One thing to watch out for is just how variable the hardware capabilities\n: are. Atmel GPIOs have something like a fixed number of 32K clock cycles\n: for debounce, twl4030 had something odd, OMAPs were more like the Atmel\n: chips but with a different clock. In some cases debouncing had to be\n: ganged, not per-GPIO. And so forth.\n\nSigned-off-by: Felipe Balbi \u003cfelipe.balbi@nokia.com\u003e\nCc: Tony Lindgren \u003ctony@atomide.com\u003e\nCc: David Brownell \u003cdavid-b@pacbell.net\u003e\nReviewed-by: Mark Brown \u003cbroonie@opensource.wolfsonmicro.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "62154991a8b2b932112d39bf4aeaab37fa7b9a31", "tree": "3a66dee35354f8ffe071aa059024d9ae41d3cdaa", "parents": [ "a80a0bbee49872c296c9ed9d6af0f510fcd825a7" ], "author": { "name": "Uwe Kleine-König", "email": "u.kleine-koenig@pengutronix.de", "time": "Wed May 26 14:42:17 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:41 2010 -0700" }, "message": "gpiolib: make names array and its values const\n\ngpiolib doesn\u0027t need to modify the names and I assume most initializers\nuse string constants that shouldn\u0027t be modified anyhow.\n\n[akpm@linux-foundation.org: fix drivers/gpio/cs5535-gpio.c]\nSigned-off-by: Uwe Kleine-König \u003cu.kleine-koenig@pengutronix.de\u003e\nCc: Kevin Wells \u003ckevin.wells@nxp.com\u003e\nCc: David Brownell \u003cdavid-b@pacbell.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a80a0bbee49872c296c9ed9d6af0f510fcd825a7", "tree": "e617afb270575fbd3c05f534444fd8895fc8a0b9", "parents": [ "0af62f4d1eedaacf6a85e293958699540d09fa3e" ], "author": { "name": "Marc Zyngier", "email": "maz@misterjones.org", "time": "Wed May 26 14:42:16 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:41 2010 -0700" }, "message": "gpio: add interrupt handling capability to max732x\n\nMost of the GPIO expanders supported by the max732x driver have interrupt\ngeneration capability by reporting changes on input pins through an INT#\npin. This patch implements the irq_chip functionnality (edge detection\nonly).\n\nSigned-off-by: Marc Zyngier \u003cmaz@misterjones.org\u003e\nCc: Eric Miao \u003ceric.y.miao@gmail.com\u003e\nCc: Jebediah Huang \u003cjebediah.huang@gmail.com\u003e\nCc: David Brownell \u003cdavid-b@pacbell.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c63b3cba4f47ef9f4b3f952b4f923cf341d250ac", "tree": "dc472d6c93cd7878609752ebe74476b0701e0d96", "parents": [ "6c1f716e8154ee9315534782b9b1eedea0559a24" ], "author": { "name": "Viresh KUMAR", "email": "viresh.kumar@st.com", "time": "Wed May 26 14:42:10 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:40 2010 -0700" }, "message": "sdhci-spear: ST SPEAr based SDHCI controller glue\n\nAdd a glue layer to support the sdhci driver on the ST SPEAr platform.\n\nSigned-off-by: Viresh Kumar \u003cviresh.kumar@st.com\u003e\nCc: \u003cshiraz.hashim@st.com\u003e\nCc: Linus Walleij \u003clinus.ml.walleij@gmail.com\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: \u003clinux-mmc@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6c1f716e8154ee9315534782b9b1eedea0559a24", "tree": "a30bf84dddede683fee5a46d2468b8f02e67a0cb", "parents": [ "1a13f8fa76c880be41d6b1e6a2b44404bcbfdf9e" ], "author": { "name": "Grazvydas Ignotas", "email": "notasas@gmail.com", "time": "Wed May 26 14:42:09 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:40 2010 -0700" }, "message": "sdio: add new function for RAW (Read after Write) operation\n\nSDIO specification allows RAW (Read after Write) operation using\nIO_RW_DIRECT command (CMD52) by setting the RAW bit. This operation is\nsimilar to ordinary read/write commands, except that both write and read\nare performed using single command/response pair. The Linux SDIO layer\nalready supports this internaly, only external function is missing for\ndrivers to make use, which is added by this patch.\n\nThis type of command is required to implement proper power save mode\nsupport in wl1251 wifi driver.\n\nAndroid has similar patch for G1 in it\u0027s tree for the same reason:\n\nhttp://android.git.kernel.org/?p\u003dkernel/common.git;a\u003dcommitdiff;h\u003d74a47786f6ecbe6c1cf9fb15efe6a968451deb52\n\nSigned-off-by: Grazvydas Ignotas \u003cnotasas@gmail.com\u003e\nAcked-by: Kalle Valo \u003ckalle.valo@iki.fi\u003e\nCc: Dmitry Shmidt \u003cdimitrysh@google.com\u003e\nCc: \u003clinux-mmc@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1a13f8fa76c880be41d6b1e6a2b44404bcbfdf9e", "tree": "3b4239740ca22d19780d05da92cdd203828ea17f", "parents": [ "a791daa15305e7e549a418ef0ae6bc4b4580066e" ], "author": { "name": "Matt Fleming", "email": "matt@console-pimps.org", "time": "Wed May 26 14:42:08 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:40 2010 -0700" }, "message": "mmc: remove the \"state\" argument to mmc_suspend_host()\n\nEven though many mmc host drivers pass a pm_message_t argument to\nmmc_suspend_host() that argument isn\u0027t used the by MMC core. As host\ndrivers are converted to dev_pm_ops they\u0027ll have to construct\npm_message_t\u0027s (as they won\u0027t be passed by the PM subsystem any more) just\nto appease the mmc suspend interface.\n\nWe might as well just delete the unused paramter.\n\nSigned-off-by: Matt Fleming \u003cmatt@console-pimps.org\u003e\nAcked-by: Anton Vorontsov \u003ccbouatmailru@gmail.com\u003e\nAcked-by: Michal Miroslaw \u003cmirq-linux@rere.qmqm.pl\u003eZZ\nAcked-by: Sascha Sommer \u003csaschasommer@freenet.de\u003e\nCc: \u003clinux-mmc@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fdc50a9444b9781f4dd5aa5f7453300d2688cc5f", "tree": "d1e1e29c06ec03ecb3b217dfcdfb49f0a5eb30e2", "parents": [ "99ddffd8ef84c0389e31cb4b90d9e5415ea19cb0" ], "author": { "name": "Yusuke Goda", "email": "yusuke.goda.sx@renesas.com", "time": "Wed May 26 14:41:59 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:39 2010 -0700" }, "message": "mmc: add support MMCIF for SuperH\n\nMMCIF is the MMC Host Interface in SuperH.\n\nSigned-off-by: Yusuke Goda \u003cyusuke.goda.sx@renesas.com\u003e\nCc: Ben Hutchings \u003cben@decadent.org.uk\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Magnus Damm \u003cmagnus.damm@gmail.com\u003e\nCc: \u003clinux-mmc@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a7626b7a5de37bbd506b23633be95428ee81c2e4", "tree": "5979fe207a53005d4dfbfb4d2a281f8dd20b3f08", "parents": [ "f27f47ef5b67106ff1cdeebf061387a7b30c12bc" ], "author": { "name": "Anton Vorontsov", "email": "avorontsov@ru.mvista.com", "time": "Wed May 26 14:41:55 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:39 2010 -0700" }, "message": "sdhci-pltfm: implement platform data passing\n\nThis includes platform ops, quirks and (de)initialization callbacks.\n\nSigned-off-by: Anton Vorontsov \u003cavorontsov@ru.mvista.com\u003e\nCc: Richard Röjfors \u003crichard.rojfors@pelagicore.com\u003e\nCc: David Vrabel \u003cdavid.vrabel@csr.com\u003e\nCc: Pierre Ossman \u003cpierre@ossman.eu\u003e\nCc: Ben Dooks \u003cben@simtec.co.uk\u003e\nCc: \u003clinux-mmc@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "13da9e200fe4740b02cd51e07ab454627e228920", "tree": "e65f37a59c2a0e1695d5094a8f5509839e1d30cc", "parents": [ "4e89e8f61bcdff82a7b63b80ed83a6725028d61b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 26 08:30:15 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed May 26 08:30:15 2010 -0700" }, "message": "Revert \"endian: #define __BYTE_ORDER\"\n\nThis reverts commit b3b77c8caef1750ebeea1054e39e358550ea9f55, which was\nalso totally broken (see commit 0d2daf5cc858 that reverted the crc32\nversion of it). As reported by Stephen Rothwell, it causes problems on\nbig-endian machines:\n\n\u003e In file included from fs/jfs/jfs_types.h:33,\n\u003e from fs/jfs/jfs_incore.h:26,\n\u003e from fs/jfs/file.c:22:\n\u003e fs/jfs/endian24.h:36:101: warning: \"__LITTLE_ENDIAN\" is not defined\n\nThe kernel has never had that crazy \"__BYTE_ORDER \u003d\u003d __LITTLE_ENDIAN\"\nmodel. It\u0027s not how we do things, and it isn\u0027t how we _should_ do\nthings. So don\u0027t go there.\n\nRequested-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b1cdc4670b9508fcd47a15fbd12f70d269880b37", "tree": "fea9e2650170886d539488f8b1e064f6ca60ad36", "parents": [ "ce7d0226198aac42ed311dd2783232adc16b296d", "f925b1303e0672effc78547353bd2ddfe11f5b5f" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 16:59:51 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 16:59:51 2010 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (63 commits)\n drivers/net/usb/asix.c: Fix pointer cast.\n be2net: Bug fix to avoid disabling bottom half during firmware upgrade.\n proc_dointvec: write a single value\n hso: add support for new products\n Phonet: fix potential use-after-free in pep_sock_close()\n ath9k: remove VEOL support for ad-hoc\n ath9k: change beacon allocation to prefer the first beacon slot\n sock.h: fix kernel-doc warning\n cls_cgroup: Fix build error when built-in\n macvlan: do proper cleanup in macvlan_common_newlink() V2\n be2net: Bug fix in init code in probe\n net/dccp: expansion of error code size\n ath9k: Fix rx of mcast/bcast frames in PS mode with auto sleep\n wireless: fix sta_info.h kernel-doc warnings\n wireless: fix mac80211.h kernel-doc warnings\n iwlwifi: testing the wrong variable in iwl_add_bssid_station()\n ath9k_htc: rare leak in ath9k_hif_usb_alloc_tx_urbs()\n ath9k_htc: dereferencing before check in hif_usb_tx_cb()\n rt2x00: Fix rt2800usb TX descriptor writing.\n rt2x00: Fix failed SLEEP-\u003eAWAKE and AWAKE-\u003eSLEEP transitions.\n ...\n" }, { "commit": "578454ff7eab61d13a26b568f99a89a2c9edc881", "tree": "6abdaf9acdd797767c92cb53e04574d3c755779e", "parents": [ "ec96e2fe954c23a54bfdf2673437a39e193a1822" ], "author": { "name": "Kay Sievers", "email": "kay.sievers@vrfy.org", "time": "Thu May 20 18:07:20 2010 +0200" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Tue May 25 15:08:26 2010 -0700" }, "message": "driver core: add devname module aliases to allow module on-demand auto-loading\n\nThis adds:\n alias: devname:\u003cname\u003e\nto some common kernel modules, which will allow the on-demand loading\nof the kernel module when the device node is accessed.\n\nIdeally all these modules would be compiled-in, but distros seems too\nmuch in love with their modularization that we need to cover the common\ncases with this new facility. It will allow us to remove a bunch of pretty\nuseless init scripts and modprobes from init scripts.\n\nThe static device node aliases will be carried in the module itself. The\nprogram depmod will extract this information to a file in the module directory:\n $ cat /lib/modules/2.6.34-00650-g537b60d-dirty/modules.devname\n # Device nodes to trigger on-demand module loading.\n microcode cpu/microcode c10:184\n fuse fuse c10:229\n ppp_generic ppp c108:0\n tun net/tun c10:200\n dm_mod mapper/control c10:235\n\nUdev will pick up the depmod created file on startup and create all the\nstatic device nodes which the kernel modules specify, so that these modules\nget automatically loaded when the device node is accessed:\n $ /sbin/udevd --debug\n ...\n static_dev_create_from_modules: mknod \u0027/dev/cpu/microcode\u0027 c10:184\n static_dev_create_from_modules: mknod \u0027/dev/fuse\u0027 c10:229\n static_dev_create_from_modules: mknod \u0027/dev/ppp\u0027 c108:0\n static_dev_create_from_modules: mknod \u0027/dev/net/tun\u0027 c10:200\n static_dev_create_from_modules: mknod \u0027/dev/mapper/control\u0027 c10:235\n udev_rules_apply_static_dev_perms: chmod \u0027/dev/net/tun\u0027 0666\n udev_rules_apply_static_dev_perms: chmod \u0027/dev/fuse\u0027 0666\n\nA few device nodes are switched to statically allocated numbers, to allow\nthe static nodes to work. This might also useful for systems which still run\na plain static /dev, which is completely unsafe to use with any dynamic minor\nnumbers.\n\nNote:\nThe devname aliases must be limited to the *common* and *single*instance*\ndevice nodes, like the misc devices, and never be used for conceptually limited\nsystems like the loop devices, which should rather get fixed properly and get a\ncontrol node for losetup to talk to, instead of creating a random number of\ndevice nodes in advance, regardless if they are ever used.\n\nThis facility is to hide the mess distros are creating with too modualized\nkernels, and just to hide that these modules are not compiled-in, and not to\npaper-over broken concepts. Thanks! :)\n\nCc: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\nCc: David S. Miller \u003cdavem@davemloft.net\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nCc: Alasdair G Kergon \u003cagk@redhat.com\u003e\nCc: Tigran Aivazian \u003ctigran@aivazian.fsnet.co.uk\u003e\nCc: Ian Kent \u003craven@themaw.net\u003e\nSigned-Off-By: Kay Sievers \u003ckay.sievers@vrfy.org\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n" }, { "commit": "ec96e2fe954c23a54bfdf2673437a39e193a1822", "tree": "e4041c68ef20a3337c56aefc8db785156307edd1", "parents": [ "8e9815a0f8882aaa68645b001bb7538db8886802", "f949c0edd84101bfd30b3e7389c1a12b067e561d" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 12:06:33 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 12:06:33 2010 -0700" }, "message": "Merge branch \u0027devel\u0027 of master.kernel.org:/home/rmk/linux-2.6-arm\n\n* \u0027devel\u0027 of master.kernel.org:/home/rmk/linux-2.6-arm: (103 commits)\n ARM: 6141/1: Add audio support part in arch/arm/mach-w90x900\n ARM: 5939/1: ARM: Add option CMDLINE_FORCE to force usage of the in-kernel cmdline\n ARM: 6140/1: silence a bogus sparse warning in unwind.c\n ARM: mach-at91: duplicated include\n ARM: arch/arm/nwfpe/fpsr.h: Checkpatch cleanup\n ARM: arch/arm/mach-shark/pci.c: Checkpatch cleanup\n ARM: arch/arm/nwfpe/ChangeLog: Checkpatch cleanup\n ARM: arch/arm/mach-sa1100/leds.c: Checkpatch cleanup\n ARM: arch/arm/mach-h720x/common.h: Checkpatch cleanup\n ARM: arch/arm/mach-footbridge/ebsa285-pci.c: Checkpatch cleanup\n ARM: arch/arm/mach-clps711x/Makefile.boot: Checkpatch cleanup\n ARM: arch/arm/boot/bootp/bootp.lds: Checkpatch cleanup\n ARM: SPEAR6xx: remove duplicated #include\n ARM: s3c6400_defconfig: Add NAND driver\n ARM: s3c6400_defconfig: enable sound as modules\n ARM: s3c6400_defconfig: enable power management\n ARM: s5pv210_defconfig: Update s5pv210_defconfig to v2.6.34\n ARM: s5pc110_defconfig: Update s5pc110_defconfig to v2.6.34\n ARM: s5p6442_defconfig: Update s5p6442_defconfig to v2.6.34\n ARM: s5p6440_defconfig: Update s5p6440_defconfig to v2.6.34\n ...\n" }, { "commit": "702c0b04978ce316ec05f4d0a9c148fac124335b", "tree": "3908c5821221d950a6b1a7e2e898899e63e7d437", "parents": [ "c19eb8f0d1bd442ed1aff0b413dd822620771c29", "bf6a67ee3427ab142136e03e90d0b67ecbca5ff2" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 12:04:17 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 12:04:17 2010 -0700" }, "message": "Merge branch \u0027next-spi\u0027 of git://git.secretlab.ca/git/linux-2.6\n\n* \u0027next-spi\u0027 of git://git.secretlab.ca/git/linux-2.6:\n spi/xilinx: Fix compile error\n spi/davinci: Fix clock prescale factor computation\n spi: move bitbang txrx utility functions to private header\n spi/mpc5121: Add SPI master driver for MPC5121 PSC\n powerpc/mpc5121: move PSC FIFO memory init to platform code\n spi/ep93xx: implemented driver for Cirrus EP93xx SPI controller\n Documentation/spi/* compile warning fix\n spi/omap2_mcspi: Check params before dereference or use\n spi/omap2_mcspi: add turbo mode support\n spi/omap2_mcspi: change default DMA_MIN_BYTES value to 160\n spi/pl022: fix stop queue procedure\n spi/pl022: add support for the PL023 derivate\n spi/pl022: fix up differences between ARM and ST versions\n spi/spi_mpc8xxx: Do not use map_tx_dma to unmap rx_dma\n spi/spi_mpc8xxx: Fix QE mode Litte Endian\n spi/spi_mpc8xxx: fix potential memory corruption.\n" }, { "commit": "99765cc7e393c8637abaaf0c73f28ec63370d35c", "tree": "c386ff98390afe9a5f2626dbd3c49b7371a020eb", "parents": [ "51e618c357b39597b474165c5d17067afe8f16a6", "500b4ac90d1103a7c302d5bb16c53f4ffc45d057" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 11:49:41 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 11:49:41 2010 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:\n regulator: return set_mode is same mode is requested\n Regulators: ab3100/bq24022: add a missing .owner field in regulator_desc\n twl6030: regulator: Remove vsel tables and use formula for calculation\n mc13783-regulator: fix vaild voltage range checking for mc13783_fixed_regulator_set_voltage\n regulator: use voltage number array in 88pm860x\n regulator: make 88pm860x sharing one driver structure\n regulator: simplify regulator_register() error handling\n regulator: fix unset_regulator_supplies() to remove all matches\n regulator: prevent registration of matching regulator consumer supplies\n regulator: Allow regulator-regulator supplies to be specified by name\n" }, { "commit": "5487ab4a5a71e955fef7094a0624df0542da91ef", "tree": "474021353de5a708998865406d2a7eec7060860c", "parents": [ "e40152ee1e1c7a63f4777791863215e3faa37a86" ], "author": { "name": "Feng Tang", "email": "feng.tang@intel.com", "time": "Tue May 25 16:40:47 2010 +0800" }, "committer": { "name": "Len Brown", "email": "len.brown@intel.com", "time": "Tue May 25 11:41:43 2010 -0400" }, "message": "SFI: add support for v0.81 spec\n\nThere are 2 major changes from v0.81 to v0.7:\n1. Consolidating the SPIB/I2CB tables into a new DEVS table,\n which is more expandable and can support other bus types\n than spi/i2c.\n2. Creating a new GPIO table, which list all the GPIO pins\n used in the platform.\n\nHowever, to avoid breaking current platforms who use SFI v0.7\nversion firmware, the definitions for SPIB/I2CB will still\nbe kept for a while\n\nSigned-off-by: Feng Tang \u003cfeng.tang@intel.com\u003e\nSigned-off-by: Len Brown \u003clen.brown@intel.com\u003e\n" }, { "commit": "49c39b4953e545ce3b5957cce22e1ade01c6e642", "tree": "7ed545609a4abd9cf818d27a08019e0c821f8d48", "parents": [ "1f9c3e1f07e39c8af3bf42236fc553b5bb0f83f1" ], "author": { "name": "Grazvydas Ignotas", "email": "notasas@gmail.com", "time": "Mon May 24 14:34:02 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:09 2010 -0700" }, "message": "fbdev: move FBIO_WAITFORVSYNC to linux/fb.h\n\nFBIO_WAITFORVSYNC is currently implemented by matroxfb, atyfb, intelfb and\nmore. All of them keep redefining the same FBIO_WAITFORVSYNC macro over\nand over again, so move it to linux/fb.h and clean up those duplicate\ndefines.\n\nSigned-off-by: Grazvydas Ignotas \u003cnotasas@gmail.com\u003e\nCc: Ville Syrjala \u003csyrjala@sci.fi\u003e\nCc: Grant Likely \u003cgrant.likely@secretlab.ca\u003e\nCc: Maik Broemme \u003cmbroemme@plusserver.de\u003e\nCc: Petr Vandrovec \u003cvandrove@vc.cvut.cz\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Krzysztof Helt \u003ckrzysztof.h1@poczta.fm\u003e\nCc: \"Hiremath, Vaibhav\" \u003chvaibhav@ti.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6d94d4081048756df78444a07201156f4930fe48", "tree": "7bfecedff2b04284ab45764d0ce6ec183a6594b3", "parents": [ "92ba4fe4b53b4fa5ac71ec4d80572348fca85796" ], "author": { "name": "Samu Onkalo", "email": "samu.p.onkalo@nokia.com", "time": "Mon May 24 14:33:37 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:07 2010 -0700" }, "message": "lis3: interrupt handlers for 8bit wakeup and click events\n\nContent for the 8bit device threaded interrupt handlers. Depending on the\ninterrupt line and chip configuration, either click or wakeup / freefall\nhandler is called. In case of click, BTN_ event is sent via input device.\n In case of wakeup or freefall, input device ABS_ events are updated\nimmediatelly.\n\nIt is still possible to configure interrupt line 1 for fast freefall\ndetection and use the second line either for click or threshold based\ninterrupts. Or both lines can be used for click / threshold interrupts.\n\nPolled input device can be set to stopped state and still get coordinate\nupdates via input device using interrupt based method. Polled mode and\ninterrupt mode can also be used parallel.\n\nBTN_ events are remapped based on existing axis remapping information.\n\nSigned-off-by: Samu Onkalo \u003csamu.p.onkalo@nokia.com\u003e\nAcked-by: Eric Piel \u003ceric.piel@tremplin-utc.net\u003e\nCc: Daniel Mack \u003cdaniel@caiaq.de\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "92ba4fe4b53b4fa5ac71ec4d80572348fca85796", "tree": "c18630d8aac05eacd7320bee91a40d101d72cf5c", "parents": [ "342c5f128140d54961c435d1702eadcaba97a37a" ], "author": { "name": "Samu Onkalo", "email": "samu.p.onkalo@nokia.com", "time": "Mon May 24 14:33:36 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:06 2010 -0700" }, "message": "lis3: add skeletons for interrupt handlers\n\nOriginal lis3 driver didn\u0027t provide interrupt handler(s) for click or\nthreshold event handling. This patch adds threaded handlers for one or\ntwo interrupt lines for 8 bit device. Actual content for interrupt\nhandling is provided in the separate patch.\n\nSigned-off-by: Samu Onkalo \u003csamu.p.onkalo@nokia.com\u003e\nTested-by: Daniel Mack \u003cdaniel@caiaq.de\u003e\nAcked-by: Eric Piel \u003ceric.piel@tremplin-utc.net\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "342c5f128140d54961c435d1702eadcaba97a37a", "tree": "884b712d67b3319c9d8d747d5dd0cd5e0234f842", "parents": [ "ecc437aeee65afeea2e1bed963ccf6c384c555ea" ], "author": { "name": "Samu Onkalo", "email": "samu.p.onkalo@nokia.com", "time": "Mon May 24 14:33:35 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:06 2010 -0700" }, "message": "lis3: introduce platform data for second ff / wu unit\n\n8 bit device has two wakeup / free fall units. It was not possible to\nconfigure the second unit. This patch introduces configuration entry to\nthe platform data and also corresponding changes to the 8 bit setup\nfunction.\n\nHigh pass filters were enabled by default. Patch introduces configuration\noption for high pass filter cut off frequency and also possibility to\ndisable or enable the filter via platform data. Since the control is a\nnew one and default state was filter enabled, new option is used to\ndisable the filter. This way old platform data is still compatible with\nthe change.\n\nSigned-off-by: Samu Onkalo \u003csamu.p.onkalo@nokia.com\u003e\nAcked-by: Eric Piel \u003ceric.piel@tremplin-utc.net\u003e\nTested-by: Daniel Mack \u003cdaniel@caiaq.de\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "903788892ea0fc7fcaf7e8e5fac9a77379fc215b", "tree": "6945c6e623bf6fec7cdcd895a881c4d5bf405fa6", "parents": [ "db0fd97c270f1e80321f7ae55234643ca0978c54" ], "author": { "name": "Andy Shevchenko", "email": "ext-andriy.shevchenko@nokia.com", "time": "Mon May 24 14:33:23 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:05 2010 -0700" }, "message": "lib: introduce common method to convert hex digits\n\nhex_to_bin() is a little method which converts hex digit to its actual\nvalue. There are plenty of places where such functionality is needed.\n\n[akpm@linux-foundation.org: use tolower(), saving 3 bytes, test the more common case first - it\u0027s quicker]\n[akpm@linux-foundation.org: relocate tolower to make it even faster! (Joe)]\nSigned-off-by: Andy Shevchenko \u003cext-andriy.shevchenko@nokia.com\u003e\nCc: Tilman Schmidt \u003ctilman@imap.cc\u003e\nCc: Duncan Sands \u003cduncan.sands@free.fr\u003e\nCc: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nCc: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\nCc: \"Richard Russon (FlatCap)\" \u003cldm@flatcap.org\u003e\nCc: John W. Linville \u003clinville@tuxdriver.com\u003e\nCc: Len Brown \u003clenb@kernel.org\u003e\nCc: Joe Perches \u003cjoe@perches.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2b2f68b5383ea107295d7f1483256866e2daa1e3", "tree": "ab643941ab96fce48117479d321adfa3d9510d23", "parents": [ "ea46c8f774f295c45fac48101d54be347d3d453b" ], "author": { "name": "Florian Ragwitz", "email": "rafl@debian.org", "time": "Mon May 24 14:33:21 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:05 2010 -0700" }, "message": "DYNAMIC_DEBUG: fix documentation errors\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Florian Ragwitz \u003crafl@debian.org\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f40c396a9ab04eae526990e2b2cef875b424ed4e", "tree": "92b87fb6feb9470f9aa3cacc9344f7907ab2489c", "parents": [ "d8521fcc5e0ad3e79bbc4231bb20a6cdc2b50164" ], "author": { "name": "OGAWA Hirofumi", "email": "hirofumi@mail.parknet.co.jp", "time": "Mon May 24 14:33:11 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:03 2010 -0700" }, "message": "ratelimit: add ratelimit_state_init()\n\nFor now, all users of ratelimit_state allocates it statically, so\nDEFINE_RATELIMIT_STATE() is enough. But, I want to use ratelimit_state\nfor fs, i.e. per super_block to suppress too many error reports.\n\nSo, this adds ratelimit_state_init() to initialize ratelimite_state\nwhich is dynamically allocated, instead of opencoding.\n\nSigned-off-by: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d8521fcc5e0ad3e79bbc4231bb20a6cdc2b50164", "tree": "7469b407cb8a87d26733cea33a1570c2433e014b", "parents": [ "fa1f68db6ca7ebb6fc4487ac215bffba06c01c28" ], "author": { "name": "OGAWA Hirofumi", "email": "hirofumi@mail.parknet.co.jp", "time": "Mon May 24 14:33:11 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:03 2010 -0700" }, "message": "printk_ratelimited(): fix uninitialized spinlock\n\nratelimit_state initialization of printk_ratelimited() seems broken. This\nfixes it by using DEFINE_RATELIMIT_STATE() to initialize spinlock\nproperly.\n\nSigned-off-by: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nCc: Joe Perches \u003cjoe@perches.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fc62f2f19edf46c9bdbd1a54725b56b18c43e94f", "tree": "1742d181c4c44825df436982cb2f9ea4c386a5f3", "parents": [ "4c99000ac47cbd097e62f1b5cafad745622cedc3" ], "author": { "name": "Joe Perches", "email": "joe@perches.com", "time": "Mon May 24 14:33:08 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:03 2010 -0700" }, "message": "kernel.h: add pr_warn for symmetry to dev_warn, netdev_warn\n\nThe current logging macros are\npr_\u003clevel\u003e, dev_\u003clevel\u003e, netdev_\u003clevel\u003e, and netif_\u003clevel\u003e.\npr_ uses warning, the other use warn.\n\nStandardize these logging macros a bit more by adding pr_warn and\npr_warn_ratelimited.\n\nRight now, there are:\n\n$ for level in emerg alert crit err warn warning notice info ; do \\\n for prefix in pr dev netdev netif ; do \\\n echo -n \"${prefix}_${level}:\t`git grep -w \"${prefix}_${level}\" | wc -l`\t\" ; \\\n done ; \\\n echo ; \\\n done\npr_emerg: \t45\tdev_emerg: \t4\tnetdev_emerg: \t1\tnetif_emerg: \t4\npr_alert: \t24\tdev_alert: \t36\tnetdev_alert: \t1\tnetif_alert: \t6\npr_crit: \t24\tdev_crit: \t22\tnetdev_crit: \t1\tnetif_crit: \t4\npr_err: \t2013\tdev_err: \t8467\tnetdev_err: \t267\tnetif_err: \t240\npr_warn: \t0\tdev_warn: \t1818\tnetdev_warn: \t126\tnetif_warn: \t23\npr_warning: \t773\tdev_warning: \t0\tnetdev_warning:\t0\tnetif_warning: \t0\npr_notice: \t148\tdev_notice: \t111\tnetdev_notice: \t9\tnetif_notice: \t3\npr_info: \t1717\tdev_info: \t3007\tnetdev_info: \t101\tnetif_info: \t85\n\nSigned-off-by: Joe Perches \u003cjoe@perches.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4be929be34f9bdeffa40d815d32d7d60d2c7f03b", "tree": "4d2c6e2b8ef766e565e2e050ee151de2e02081d3", "parents": [ "940370fc86b920b51a34217a1facc3e9e97c2456" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Mon May 24 14:33:03 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:02 2010 -0700" }, "message": "kernel-wide: replace USHORT_MAX, SHORT_MAX and SHORT_MIN with USHRT_MAX, SHRT_MAX and SHRT_MIN\n\n- C99 knows about USHRT_MAX/SHRT_MAX/SHRT_MIN, not\n USHORT_MAX/SHORT_MAX/SHORT_MIN.\n\n- Make SHRT_MIN of type s16, not int, for consistency.\n\n[akpm@linux-foundation.org: fix drivers/dma/timb_dma.c]\n[akpm@linux-foundation.org: fix security/keys/keyring.c]\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nAcked-by: WANG Cong \u003cxiyou.wangcong@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b3b77c8caef1750ebeea1054e39e358550ea9f55", "tree": "9026ca0b3453226434a4ca8878832a4910b48664", "parents": [ "e47103b1af5df52fa69e18b14d3012472f78817d" ], "author": { "name": "Joakim Tjernlund", "email": "Joakim.Tjernlund@transmode.se", "time": "Mon May 24 14:33:01 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:02 2010 -0700" }, "message": "endian: #define __BYTE_ORDER\n\nLinux does not define __BYTE_ORDER in its endian header files which makes\nsome header files bend backwards to get at the current endian. Lets\n#define __BYTE_ORDER in big_endian.h/litte_endian.h to make it easier for\nheader files that are used in user space too.\n\nIn userspace the convention is that\n\n 1. _both_ __LITTLE_ENDIAN and __BIG_ENDIAN are defined,\n 2. you have to test for e.g. __BYTE_ORDER \u003d\u003d __BIG_ENDIAN.\n\nSigned-off-by: Joakim Tjernlund \u003cJoakim.Tjernlund@transmode.se\u003e\nCc: Geert Uytterhoeven \u003cgeert@linux-m68k.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e47103b1af5df52fa69e18b14d3012472f78817d", "tree": "6652e56e361415a85ab5a7b888492e5ceef0cd94", "parents": [ "1f85f87d4f81d1e5a2d502d48316a1bdc5acac0b" ], "author": { "name": "Jani Nikula", "email": "ext-jani.1.nikula@nokia.com", "time": "Mon May 24 14:33:00 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:02 2010 -0700" }, "message": "err.h: add __must_check to error pointer handlers\n\nAdd __must_check to error pointer handlers to have the compiler warn about\nmistakes like:\n\n\tif (err)\n\t\tERR_PTR(err);\n\nIt found two bugs:\n\nMar 12 Nikula Jani [PATCH] enclosure: fix error path - actually return ERR_PTR() on error\nMar 12 Nikula Jani [PATCH] sunrpc: fix error path - actually return ERR_PTR() on error\n\nSigned-off-by: Jani Nikula \u003cext-jani.1.nikula@nokia.com\u003e\nCc: Phil Carmody \u003cext-phil.2.carmody@nokia.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c6f6b596a5a73e63e5e930c414375c0c389199ab", "tree": "900d4b3a6d198edc2045511b5b8d6001755bcfbf", "parents": [ "4eaf3f64397c3db3c5785eee508270d62a9fabd9" ], "author": { "name": "Chris Metcalf", "email": "cmetcalf@tilera.com", "time": "Mon May 24 14:32:53 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:02 2010 -0700" }, "message": "mm: make lowmem_page_address() use PFN_PHYS() for improved portability\n\nThis ensures that platforms with lowmem PAs above 32 bits work correctly\nby avoiding truncating the PA during a left shift.\n\nSigned-off-by: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\nCc: Barry Song \u003c21cnbao@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4eaf3f64397c3db3c5785eee508270d62a9fabd9", "tree": "bfd986a7e974876755ea6fe0de394199c68e2e36", "parents": [ "1f522509c77a5dea8dc384b735314f03908a6415" ], "author": { "name": "Haicheng Li", "email": "haicheng.li@linux.intel.com", "time": "Mon May 24 14:32:52 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:02 2010 -0700" }, "message": "mem-hotplug: fix potential race while building zonelist for new populated zone\n\nAdd global mutex zonelists_mutex to fix the possible race:\n\n CPU0 CPU1 CPU2\n(1) zone-\u003epresent_pages +\u003d online_pages;\n(2) build_all_zonelists();\n(3) alloc_page();\n(4) free_page();\n(5) build_all_zonelists();\n(6) __build_all_zonelists();\n(7) zone-\u003epageset \u003d alloc_percpu();\n\nIn step (3,4), zone-\u003epageset still points to boot_pageset, so bad\nthings may happen if 2+ nodes are in this state. Even if only 1 node\nis accessing the boot_pageset, (3) may still consume too much memory\nto fail the memory allocations in step (7).\n\nBesides, atomic operation ensures alloc_percpu() in step (7) will never fail\nsince there is a new fresh memory block added in step(6).\n\n[haicheng.li@linux.intel.com: hold zonelists_mutex when build_all_zonelists]\nSigned-off-by: Haicheng Li \u003chaicheng.li@linux.intel.com\u003e\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nReviewed-by: Andi Kleen \u003candi.kleen@intel.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Tejun Heo \u003ctj@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1f522509c77a5dea8dc384b735314f03908a6415", "tree": "4b848527b90877a8a64c46e8e2d76723405c319d", "parents": [ "319774e25fa4b7641bdc3b0a464dd84e62103347" ], "author": { "name": "Haicheng Li", "email": "haicheng.li@linux.intel.com", "time": "Mon May 24 14:32:51 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:01 2010 -0700" }, "message": "mem-hotplug: avoid multiple zones sharing same boot strapping boot_pageset\n\nFor each new populated zone of hotadded node, need to update its pagesets\nwith dynamically allocated per_cpu_pageset struct for all possible CPUs:\n\n 1) Detach zone-\u003epageset from the shared boot_pageset\n at end of __build_all_zonelists().\n\n 2) Use mutex to protect zone-\u003epageset when it\u0027s still\n shared in onlined_pages()\n\nOtherwises, multiple zones of different nodes would share same boot strapping\nboot_pageset for same CPU, which will finally cause below kernel panic:\n\n ------------[ cut here ]------------\n kernel BUG at mm/page_alloc.c:1239!\n invalid opcode: 0000 [#1] SMP\n ...\n Call Trace:\n [\u003cffffffff811300c1\u003e] __alloc_pages_nodemask+0x131/0x7b0\n [\u003cffffffff81162e67\u003e] alloc_pages_current+0x87/0xd0\n [\u003cffffffff81128407\u003e] __page_cache_alloc+0x67/0x70\n [\u003cffffffff811325f0\u003e] __do_page_cache_readahead+0x120/0x260\n [\u003cffffffff81132751\u003e] ra_submit+0x21/0x30\n [\u003cffffffff811329c6\u003e] ondemand_readahead+0x166/0x2c0\n [\u003cffffffff81132ba0\u003e] page_cache_async_readahead+0x80/0xa0\n [\u003cffffffff8112a0e4\u003e] generic_file_aio_read+0x364/0x670\n [\u003cffffffff81266cfa\u003e] nfs_file_read+0xca/0x130\n [\u003cffffffff8117b20a\u003e] do_sync_read+0xfa/0x140\n [\u003cffffffff8117bf75\u003e] vfs_read+0xb5/0x1a0\n [\u003cffffffff8117c151\u003e] sys_read+0x51/0x80\n [\u003cffffffff8103c032\u003e] system_call_fastpath+0x16/0x1b\n RIP [\u003cffffffff8112ff13\u003e] get_page_from_freelist+0x883/0x900\n RSP \u003cffff88000d1e78a8\u003e\n ---[ end trace 4bda28328b9990db ]\n\n[akpm@linux-foundation.org: merge fix]\nSigned-off-by: Haicheng Li \u003chaicheng.li@linux.intel.com\u003e\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nReviewed-by: Andi Kleen \u003candi.kleen@intel.com\u003e\nReviewed-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Tejun Heo \u003ctj@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0faa56389c793cda7f967117415717bbab24fe4e", "tree": "b0d5f12579a4448adff2b6e462488f3cc6d75326", "parents": [ "ff3d58c22b6827039983911d3460cf0c1657f8cc" ], "author": { "name": "Marcelo Roberto Jimenez", "email": "mroberto@cpti.cetuc.puc-rio.br", "time": "Mon May 24 14:32:47 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:01 2010 -0700" }, "message": "mm: fix NR_SECTION_ROOTS \u003d\u003d 0 when using using sparsemem extreme.\n\nGot this while compiling for ARM/SA1100:\n\nmm/sparse.c: In function \u0027__section_nr\u0027:\nmm/sparse.c:135: warning: \u0027root\u0027 is used uninitialized in this function\n\nThis patch follows Russell King\u0027s suggestion for a new calculation for\nNR_SECTION_ROOTS. Thanks also to Sergei Shtylyov for pointing out the\nexistence of the macro DIV_ROUND_UP.\n\nAtsushi Nemoto observed:\n: This fix doesn\u0027t just silence the warning - it fixes a real problem.\n:\n: Without this fix, mem_section[] might have 0 size so mem_section[0]\n: will share other variable area. For example, I got:\n:\n: c030c700 b __warned.16478\n: c030c700 B mem_section\n: c030c701 b __warned.16483\n:\n: This might cause very strange behavior. Your patch actually fixes it.\n\nSigned-off-by: Marcelo Roberto Jimenez \u003cmroberto@cpti.cetuc.puc-rio.br\u003e\nCc: Atsushi Nemoto \u003canemo@mba.ocn.ne.jp\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: Yinghai Lu \u003cyinghai@kernel.org\u003e\nCc: Sergei Shtylyov \u003csshtylyov@mvista.com\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ff3d58c22b6827039983911d3460cf0c1657f8cc", "tree": "bed2f2f98760425976a45858326de80aa5e7760b", "parents": [ "fd23855e38d2a7275a786238459c070b4e9f7975" ], "author": { "name": "Akinobu Mita", "email": "akinobu.mita@gmail.com", "time": "Mon May 24 14:32:46 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:01 2010 -0700" }, "message": "highmem: remove unneeded #ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT for debug_kmap_atomic()\n\nIn f4112de6b679d84bd9b9681c7504be7bdfb7c7d5 (\"mm: introduce\ndebug_kmap_atomic\") I said that debug_kmap_atomic() needs\nCONFIG_TRACE_IRQFLAGS_SUPPORT.\n\nIt was wrong. (I thought irqs_disabled() is only available when the\narchitecture has CONFIG_TRACE_IRQFLAGS_SUPPORT)\n\nRemove the #ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT check to enable\nkmap_atomic() debugging for the architectures which do not have\nCONFIG_TRACE_IRQFLAGS_SUPPORT.\n\nReported-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fd23855e38d2a7275a786238459c070b4e9f7975", "tree": "e390a91f70a428b2a70bb1fa95fcb53dd662908a", "parents": [ "263ff5d8e82e577202d2b8393585b0e2436b7ffc" ], "author": { "name": "matt mooney", "email": "mfmooney@gmail.com", "time": "Mon May 24 14:32:45 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:01 2010 -0700" }, "message": "include/linux/gfp.h: fix coding style\n\nAdd parenthesis in a define. This doesn\u0027t change functionality.\n\ncheckpatch errors:\n1) white space fixes\n2) add spaces after comas\n\nSigned-off-by: matt mooney \u003cmfm@muteddisk.com\u003e\nCc: Dan Carpenter \u003cerror27@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "263ff5d8e82e577202d2b8393585b0e2436b7ffc", "tree": "d8a1c1e7f854ae09bef85a280b365d7bb2340583", "parents": [ "cf23422b9d76215316855253da491d4c9f294372" ], "author": { "name": "matt mooney", "email": "mfmooney@gmail.com", "time": "Mon May 24 14:32:44 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:00 2010 -0700" }, "message": "include/linux/gfp.h: spelling fixes\n\nFix minor spelling errors in a few comments; no code changes.\n\nSigned-off-by: matt mooney \u003cmfm@muteddisk.com\u003e\nCc: Dan Carpenter \u003cerror27@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cf23422b9d76215316855253da491d4c9f294372", "tree": "5663d2519d83d830d24dffdf2571d58d3e55d3f6", "parents": [ "8b25c6d2231b978ccce9c401e771932bde79aa9f" ], "author": { "name": "minskey guo", "email": "chaohong_guo@linux.intel.com", "time": "Mon May 24 14:32:41 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:00 2010 -0700" }, "message": "cpu/mem hotplug: enable CPUs online before local memory online\n\nEnable users to online CPUs even if the CPUs belongs to a numa node which\ndoesn\u0027t have onlined local memory.\n\nThe zonlists(pg_data_t.node_zonelists[]) of a numa node are created either\nin system boot/init period, or at the time of local memory online. For a\nnuma node without onlined local memory, its zonelists are not initialized\nat present. As a result, any memory allocation operations executed by\nCPUs within this node will fail. In fact, an out-of-memory error is\ntriggered when attempt to online CPUs before memory comes to online.\n\nThis patch tries to create zonelists for such numa nodes, so that the\nmemory allocation for this node can be fallback\u0027ed to other nodes.\n\n[akpm@linux-foundation.org: remove unneeded export]\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: minskey guo\u003cchaohong.guo@intel.com\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Tejun Heo \u003ctj@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8b25c6d2231b978ccce9c401e771932bde79aa9f", "tree": "13845799e14e49465de1529680df7def59dcfeb8", "parents": [ "0aeb2339e54e40d0788a7017ecaeac7f5271e262" ], "author": { "name": "Johannes Weiner", "email": "hannes@cmpxchg.org", "time": "Mon May 24 14:32:40 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:00 2010 -0700" }, "message": "vmscan: remove isolate_pages callback scan control\n\nFor now, we have global isolation vs. memory control group isolation, do\nnot allow the reclaim entry function to set an arbitrary page isolation\ncallback, we do not need that flexibility.\n\nAnd since we already pass around the group descriptor for the memory\ncontrol group isolation case, just use it to decide which one of the two\nisolator functions to use.\n\nThe decisions can be merged into nearby branches, so no extra cost there.\nIn fact, we save the indirect calls.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4f92e2586b43a2402e116055d4edda704f911b5b", "tree": "6a765ebeba951c02a7878bcea52a4769ad2e45c2", "parents": [ "5e7719058079a1423ccce56148b0aaa56b2df821" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon May 24 14:32:32 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:07:00 2010 -0700" }, "message": "mm: compaction: defer compaction using an exponential backoff when compaction fails\n\nThe fragmentation index may indicate that a failure is due to external\nfragmentation but after a compaction run completes, it is still possible\nfor an allocation to fail. There are two obvious reasons as to why\n\n o Page migration cannot move all pages so fragmentation remains\n o A suitable page may exist but watermarks are not met\n\nIn the event of compaction followed by an allocation failure, this patch\ndefers further compaction in the zone (1 \u003c\u003c compact_defer_shift) times.\nIf the next compaction attempt also fails, compact_defer_shift is\nincreased up to a maximum of 6. If compaction succeeds, the defer\ncounters are reset again.\n\nThe zone that is deferred is the first zone in the zonelist - i.e. the\npreferred zone. To defer compaction in the other zones, the information\nwould need to be stored in the zonelist or implemented similar to the\nzonelist_cache. This would impact the fast-paths and is not justified at\nthis time.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5e7719058079a1423ccce56148b0aaa56b2df821", "tree": "3666cb3d5540dcaa3d8e7df8c293a0ad603a181c", "parents": [ "56de7263fcf3eb10c8dcdf8d59a9cec831795f3f" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon May 24 14:32:31 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:06:59 2010 -0700" }, "message": "mm: compaction: add a tunable that decides when memory should be compacted and when it should be reclaimed\n\nThe kernel applies some heuristics when deciding if memory should be\ncompacted or reclaimed to satisfy a high-order allocation. One of these\nis based on the fragmentation. If the index is below 500, memory will not\nbe compacted. This choice is arbitrary and not based on data. To help\noptimise the system and set a sensible default for this value, this patch\nadds a sysctl extfrag_threshold. The kernel will only compact memory if\nthe fragmentation index is above the extfrag_threshold.\n\n[randy.dunlap@oracle.com: Fix build errors when proc fs is not configured]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "56de7263fcf3eb10c8dcdf8d59a9cec831795f3f", "tree": "164637c0b678e20adfdcec4129563d9234faf405", "parents": [ "ed4a6d7f0676db50b5023cc01f6cda82a2f2a307" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon May 24 14:32:30 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:06:59 2010 -0700" }, "message": "mm: compaction: direct compact when a high-order allocation fails\n\nOrdinarily when a high-order allocation fails, direct reclaim is entered\nto free pages to satisfy the allocation. With this patch, it is\ndetermined if an allocation failed due to external fragmentation instead\nof low memory and if so, the calling process will compact until a suitable\npage is freed. Compaction by moving pages in memory is considerably\ncheaper than paging out to disk and works where there are locked pages or\nno swap. If compaction fails to free a page of a suitable size, then\nreclaim will still occur.\n\nDirect compaction returns as soon as possible. As each block is\ncompacted, it is checked if a suitable page has been freed and if so, it\nreturns.\n\n[akpm@linux-foundation.org: Fix build errors]\n[aarcange@redhat.com: fix count_vm_event preempt in memory compaction direct reclaim]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ed4a6d7f0676db50b5023cc01f6cda82a2f2a307", "tree": "6496343ba964e105cf30f8703714471f22edc806", "parents": [ "76ab0f530e4a01d4dc20cdc1d5e87753c579dc18" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon May 24 14:32:29 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:06:59 2010 -0700" }, "message": "mm: compaction: add /sys trigger for per-node memory compaction\n\nAdd a per-node sysfs file called compact. When the file is written to,\neach zone in that node is compacted. The intention that this would be\nused by something like a job scheduler in a batch system before a job\nstarts so that the job can allocate the maximum number of hugepages\nwithout significant start-up cost.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReviewed-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "76ab0f530e4a01d4dc20cdc1d5e87753c579dc18", "tree": "8e1566df85e02f67876685c36d217fec4845f79f", "parents": [ "748446bb6b5a9390b546af38ec899c868a9dbcf0" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon May 24 14:32:28 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:06:59 2010 -0700" }, "message": "mm: compaction: add /proc trigger for memory compaction\n\nAdd a proc file /proc/sys/vm/compact_memory. When an arbitrary value is\nwritten to the file, all zones are compacted. The expected user of such a\ntrigger is a job scheduler that prepares the system before the target\napplication runs.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReviewed-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "748446bb6b5a9390b546af38ec899c868a9dbcf0", "tree": "4c27d0805a5e094b39ff938ad60dd270b953a79f", "parents": [ "c175a0ce7584e5b498fff8cbdb9aa7912aa9fbba" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon May 24 14:32:27 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:06:59 2010 -0700" }, "message": "mm: compaction: memory compaction core\n\nThis patch is the core of a mechanism which compacts memory in a zone by\nrelocating movable pages towards the end of the zone.\n\nA single compaction run involves a migration scanner and a free scanner.\nBoth scanners operate on pageblock-sized areas in the zone. The migration\nscanner starts at the bottom of the zone and searches for all movable\npages within each area, isolating them onto a private list called\nmigratelist. The free scanner starts at the top of the zone and searches\nfor suitable areas and consumes the free pages within making them\navailable for the migration scanner. The pages isolated for migration are\nthen migrated to the newly isolated free pages.\n\n[aarcange@redhat.com: Fix unsafe optimisation]\n[mel@csn.ul.ie: do not schedule work on other CPUs for compaction]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c175a0ce7584e5b498fff8cbdb9aa7912aa9fbba", "tree": "dd924daef4a9e0ac9729c5b61c30b8e3cc96f971", "parents": [ "f1a5ab1210579e2d3ac8c0c227645823af5aafb0" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon May 24 14:32:26 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:06:59 2010 -0700" }, "message": "mm: move definition for LRU isolation modes to a header\n\nCurrently, vmscan.c defines the isolation modes for __isolate_lru_page().\nMemory compaction needs access to these modes for isolating pages for\nmigration. This patch exports them.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a8bef8ff6ea15fa4c67433cab0f5f3484574ef7c", "tree": "3ea9c122e02f523379d4560ee2134124d097895c", "parents": [ "e9e96b39f932a065e14f5d5bab0797ae261d03b5" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon May 24 14:32:24 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:06:59 2010 -0700" }, "message": "mm: migration: avoid race between shift_arg_pages() and rmap_walk() during migration by not migrating temporary stacks\n\nPage migration requires rmap to be able to find all ptes mapping a page\nat all times, otherwise the migration entry can be instantiated, but it\nis possible to leave one behind if the second rmap_walk fails to find\nthe page. If this page is later faulted, migration_entry_to_page() will\ncall BUG because the page is locked indicating the page was migrated by\nthe migration PTE not cleaned up. For example\n\n kernel BUG at include/linux/swapops.h:105!\n invalid opcode: 0000 [#1] PREEMPT SMP\n ...\n Call Trace:\n [\u003cffffffff810e951a\u003e] handle_mm_fault+0x3f8/0x76a\n [\u003cffffffff8130c7a2\u003e] do_page_fault+0x44a/0x46e\n [\u003cffffffff813099b5\u003e] page_fault+0x25/0x30\n [\u003cffffffff8114de33\u003e] load_elf_binary+0x152a/0x192b\n [\u003cffffffff8111329b\u003e] search_binary_handler+0x173/0x313\n [\u003cffffffff81114896\u003e] do_execve+0x219/0x30a\n [\u003cffffffff8100a5c6\u003e] sys_execve+0x43/0x5e\n [\u003cffffffff8100320a\u003e] stub_execve+0x6a/0xc0\n RIP [\u003cffffffff811094ff\u003e] migration_entry_wait+0xc1/0x129\n\nThere is a race between shift_arg_pages and migration that triggers this\nbug. A temporary stack is setup during exec and later moved. If\nmigration moves a page in the temporary stack and the VMA is then removed\nbefore migration completes, the migration PTE may not be found leading to\na BUG when the stack is faulted.\n\nThis patch causes pages within the temporary stack during exec to be\nskipped by migration. It does this by marking the VMA covering the\ntemporary stack with an otherwise impossible combination of VMA flags.\nThese flags are cleared when the temporary stack is moved to its final\nlocation.\n\n[kamezawa.hiroyu@jp.fujitsu.com: idea for having migration skip temporary stacks]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nReviewed-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: Christoph Lameter \u003ccl@linux.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7f60c214fd3a360461f3286c6908084f7f8b1950", "tree": "dba48cf988a22a40796187c7274f7903a288f7f4", "parents": [ "3f6c82728f4e31a97c3a1b32abccb512fed0b573" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon May 24 14:32:18 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:06:58 2010 -0700" }, "message": "mm: migration: share the anon_vma ref counts between KSM and page migration\n\nFor clarity of review, KSM and page migration have separate refcounts on\nthe anon_vma. While clear, this is a waste of memory. This patch gets\nKSM and page migration to share their toys in a spirit of harmony.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReviewed-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3f6c82728f4e31a97c3a1b32abccb512fed0b573", "tree": "4b577e789a5daef91e40d10bc71c8134b3874ae8", "parents": [ "e325c90ffc13b698fa2814102e05275b21c26bec" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon May 24 14:32:17 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:06:58 2010 -0700" }, "message": "mm: migration: take a reference to the anon_vma before migrating\n\nThis patchset is a memory compaction mechanism that reduces external\nfragmentation memory by moving GFP_MOVABLE pages to a fewer number of\npageblocks. The term \"compaction\" was chosen as there are is a number of\nmechanisms that are not mutually exclusive that can be used to defragment\nmemory. For example, lumpy reclaim is a form of defragmentation as was\nslub \"defragmentation\" (really a form of targeted reclaim). Hence, this\nis called \"compaction\" to distinguish it from other forms of\ndefragmentation.\n\nIn this implementation, a full compaction run involves two scanners\noperating within a zone - a migration and a free scanner. The migration\nscanner starts at the beginning of a zone and finds all movable pages\nwithin one pageblock_nr_pages-sized area and isolates them on a\nmigratepages list. The free scanner begins at the end of the zone and\nsearches on a per-area basis for enough free pages to migrate all the\npages on the migratepages list. As each area is respectively migrated or\nexhausted of free pages, the scanners are advanced one area. A compaction\nrun completes within a zone when the two scanners meet.\n\nThis method is a bit primitive but is easy to understand and greater\nsophistication would require maintenance of counters on a per-pageblock\nbasis. This would have a big impact on allocator fast-paths to improve\ncompaction which is a poor trade-off.\n\nIt also does not try relocate virtually contiguous pages to be physically\ncontiguous. However, assuming transparent hugepages were in use, a\nhypothetical khugepaged might reuse compaction code to isolate free pages,\nsplit them and relocate userspace pages for promotion.\n\nMemory compaction can be triggered in one of three ways. It may be\ntriggered explicitly by writing any value to /proc/sys/vm/compact_memory\nand compacting all of memory. It can be triggered on a per-node basis by\nwriting any value to /sys/devices/system/node/nodeN/compact where N is the\nnode ID to be compacted. When a process fails to allocate a high-order\npage, it may compact memory in an attempt to satisfy the allocation\ninstead of entering direct reclaim. Explicit compaction does not finish\nuntil the two scanners meet and direct compaction ends if a suitable page\nbecomes available that would meet watermarks.\n\nThe series is in 14 patches. The first three are not \"core\" to the series\nbut are important pre-requisites.\n\nPatch 1 reference counts anon_vma for rmap_walk_anon(). Without this\n\tpatch, it\u0027s possible to use anon_vma after free if the caller is\n\tnot holding a VMA or mmap_sem for the pages in question. While\n\tthere should be no existing user that causes this problem,\n\tit\u0027s a requirement for memory compaction to be stable. The patch\n\tis at the start of the series for bisection reasons.\nPatch 2 merges the KSM and migrate counts. It could be merged with patch 1\n\tbut would be slightly harder to review.\nPatch 3 skips over unmapped anon pages during migration as there are no\n\tguarantees about the anon_vma existing. There is a window between\n\twhen a page was isolated and migration started during which anon_vma\n\tcould disappear.\nPatch 4 notes that PageSwapCache pages can still be migrated even if they\n\tare unmapped.\nPatch 5 allows CONFIG_MIGRATION to be set without CONFIG_NUMA\nPatch 6 exports a \"unusable free space index\" via debugfs. It\u0027s\n\ta measure of external fragmentation that takes the size of the\n\tallocation request into account. It can also be calculated from\n\tuserspace so can be dropped if requested\nPatch 7 exports a \"fragmentation index\" which only has meaning when an\n\tallocation request fails. It determines if an allocation failure\n\twould be due to a lack of memory or external fragmentation.\nPatch 8 moves the definition for LRU isolation modes for use by compaction\nPatch 9 is the compaction mechanism although it\u0027s unreachable at this point\nPatch 10 adds a means of compacting all of memory with a proc trgger\nPatch 11 adds a means of compacting a specific node with a sysfs trigger\nPatch 12 adds \"direct compaction\" before \"direct reclaim\" if it is\n\tdetermined there is a good chance of success.\nPatch 13 adds a sysctl that allows tuning of the threshold at which the\n\tkernel will compact or direct reclaim\nPatch 14 temporarily disables compaction if an allocation failure occurs\n\tafter compaction.\n\nTesting of compaction was in three stages. For the test, debugging,\npreempt, the sleep watchdog and lockdep were all enabled but nothing nasty\npopped out. min_free_kbytes was tuned as recommended by hugeadm to help\nfragmentation avoidance and high-order allocations. It was tested on X86,\nX86-64 and PPC64.\n\nThs first test represents one of the easiest cases that can be faced for\nlumpy reclaim or memory compaction.\n\n1. Machine freshly booted and configured for hugepage usage with\n\ta) hugeadm --create-global-mounts\n\tb) hugeadm --pool-pages-max DEFAULT:8G\n\tc) hugeadm --set-recommended-min_free_kbytes\n\td) hugeadm --set-recommended-shmmax\n\n\tThe min_free_kbytes here is important. Anti-fragmentation works best\n\twhen pageblocks don\u0027t mix. hugeadm knows how to calculate a value that\n\twill significantly reduce the worst of external-fragmentation-related\n\tevents as reported by the mm_page_alloc_extfrag tracepoint.\n\n2. Load up memory\n\ta) Start updatedb\n\tb) Create in parallel a X files of pagesize*128 in size. Wait\n\t until files are created. By parallel, I mean that 4096 instances\n\t of dd were launched, one after the other using \u0026. The crude\n\t objective being to mix filesystem metadata allocations with\n\t the buffer cache.\n\tc) Delete every second file so that pageblocks are likely to\n\t have holes\n\td) kill updatedb if it\u0027s still running\n\n\tAt this point, the system is quiet, memory is full but it\u0027s full with\n\tclean filesystem metadata and clean buffer cache that is unmapped.\n\tThis is readily migrated or discarded so you\u0027d expect lumpy reclaim\n\tto have no significant advantage over compaction but this is at\n\tthe POC stage.\n\n3. In increments, attempt to allocate 5% of memory as hugepages.\n\t Measure how long it took, how successful it was, how many\n\t direct reclaims took place and how how many compactions. Note\n\t the compaction figures might not fully add up as compactions\n\t can take place for orders other than the hugepage size\n\nX86\t\t\t\tvanilla\t\tcompaction\nFinal page count 913 916 (attempted 1002)\npages reclaimed 68296 9791\n\nX86-64\t\t\t\tvanilla\t\tcompaction\nFinal page count: 901 902 (attempted 1002)\nTotal pages reclaimed: 112599 53234\n\nPPC64\t\t\t\tvanilla\t\tcompaction\nFinal page count: 93 94 (attempted 110)\nTotal pages reclaimed: 103216 61838\n\nThere was not a dramatic improvement in success rates but it wouldn\u0027t be\nexpected in this case either. What was important is that fewer pages were\nreclaimed in all cases reducing the amount of IO required to satisfy a\nhuge page allocation.\n\nThe second tests were all performance related - kernbench, netperf, iozone\nand sysbench. None showed anything too remarkable.\n\nThe last test was a high-order allocation stress test. Many kernel\ncompiles are started to fill memory with a pressured mix of unmovable and\nmovable allocations. During this, an attempt is made to allocate 90% of\nmemory as huge pages - one at a time with small delays between attempts to\navoid flooding the IO queue.\n\n vanilla compaction\nPercentage of request allocated X86 98 99\nPercentage of request allocated X86-64 95 98\nPercentage of request allocated PPC64 55 70\n\nThis patch:\n\nrmap_walk_anon() does not use page_lock_anon_vma() for looking up and\nlocking an anon_vma and it does not appear to have sufficient locking to\nensure the anon_vma does not disappear from under it.\n\nThis patch copies an approach used by KSM to take a reference on the\nanon_vma while pages are being migrated. This should prevent rmap_walk()\nrunning into nasty surprises later because anon_vma has been freed.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c0ff7453bb5c7c98e0885fb94279f2571946f280", "tree": "8bb2b169a5145f0496575dbd2f48bb4b1c83f819", "parents": [ "708c1bbc9d0c3e57f40501794d9b0eed29d10fce" ], "author": { "name": "Miao Xie", "email": "miaox@cn.fujitsu.com", "time": "Mon May 24 14:32:08 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:06:57 2010 -0700" }, "message": "cpuset,mm: fix no node to alloc memory when changing cpuset\u0027s mems\n\nBefore applying this patch, cpuset updates task-\u003emems_allowed and\nmempolicy by setting all new bits in the nodemask first, and clearing all\nold unallowed bits later. But in the way, the allocator may find that\nthere is no node to alloc memory.\n\nThe reason is that cpuset rebinds the task\u0027s mempolicy, it cleans the\nnodes which the allocater can alloc pages on, for example:\n\n(mpol: mempolicy)\n\ttask1\t\t\ttask1\u0027s mpol\ttask2\n\talloc page\t\t1\n\t alloc on node0? NO\t1\n\t\t\t\t1\t\tchange mems from 1 to 0\n\t\t\t\t1\t\trebind task1\u0027s mpol\n\t\t\t\t0-1\t\t set new bits\n\t\t\t\t0\t \t clear disallowed bits\n\t alloc on node1? NO\t0\n\t ...\n\tcan\u0027t alloc page\n\t goto oom\n\nThis patch fixes this problem by expanding the nodes range first(set newly\nallowed bits) and shrink it lazily(clear newly disallowed bits). So we\nuse a variable to tell the write-side task that read-side task is reading\nnodemask, and the write-side task clears newly disallowed nodes after\nread-side task ends the current memory allocation.\n\n[akpm@linux-foundation.org: fix spello]\nSigned-off-by: Miao Xie \u003cmiaox@cn.fujitsu.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Hugh Dickins \u003chugh.dickins@tiscali.co.uk\u003e\nCc: Ravikiran Thirumalai \u003ckiran@scalex86.org\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "708c1bbc9d0c3e57f40501794d9b0eed29d10fce", "tree": "4b19caf68c420b32abdf05af3d413b1320f04fbe", "parents": [ "971ada0f6659488c3f36aed4c6f7670ff5ce4368" ], "author": { "name": "Miao Xie", "email": "miaox@cn.fujitsu.com", "time": "Mon May 24 14:32:07 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:06:57 2010 -0700" }, "message": "mempolicy: restructure rebinding-mempolicy functions\n\nNick Piggin reported that the allocator may see an empty nodemask when\nchanging cpuset\u0027s mems[1]. It happens only on the kernel that do not do\natomic nodemask_t stores. (MAX_NUMNODES \u003e BITS_PER_LONG)\n\nBut I found that there is also a problem on the kernel that can do atomic\nnodemask_t stores. The problem is that the allocator can\u0027t find a node to\nalloc page when changing cpuset\u0027s mems though there is a lot of free\nmemory. The reason is like this:\n\n(mpol: mempolicy)\n\ttask1\t\t\ttask1\u0027s mpol\ttask2\n\talloc page\t\t1\n\t alloc on node0? NO\t1\n\t\t\t\t1\t\tchange mems from 1 to 0\n\t\t\t\t1\t\trebind task1\u0027s mpol\n\t\t\t\t0-1\t\t set new bits\n\t\t\t\t0\t \t clear disallowed bits\n\t alloc on node1? NO\t0\n\t ...\n\tcan\u0027t alloc page\n\t goto oom\n\nI can use the attached program reproduce it by the following step:\n\n# mkdir /dev/cpuset\n# mount -t cpuset cpuset /dev/cpuset\n# mkdir /dev/cpuset/1\n# echo `cat /dev/cpuset/cpus` \u003e /dev/cpuset/1/cpus\n# echo `cat /dev/cpuset/mems` \u003e /dev/cpuset/1/mems\n# echo $$ \u003e /dev/cpuset/1/tasks\n# numactl --membind\u003d`cat /dev/cpuset/mems` ./cpuset_mem_hog \u003cnr_tasks\u003e \u0026\n \u003cnr_tasks\u003e \u003d max(nr_cpus - 1, 1)\n# killall -s SIGUSR1 cpuset_mem_hog\n# ./change_mems.sh\n\nseveral hours later, oom will happen though there is a lot of free memory.\n\nThis patchset fixes this problem by expanding the nodes range first(set\nnewly allowed bits) and shrink it lazily(clear newly disallowed bits). So\nwe use a variable to tell the write-side task that read-side task is\nreading nodemask, and the write-side task clears newly disallowed nodes\nafter read-side task ends the current memory allocation.\n\nThis patch:\n\nIn order to fix no node to alloc memory, when we want to update mempolicy\nand mems_allowed, we expand the set of nodes first (set all the newly\nnodes) and shrink the set of nodes lazily(clean disallowed nodes), But the\nmempolicy\u0027s rebind functions may breaks the expanding.\n\nSo we restructure the mempolicy\u0027s rebind functions and split the rebind\nwork to two steps, just like the update of cpuset\u0027s mems: The 1st step:\nexpand the set of the mempolicy\u0027s nodes. The 2nd step: shrink the set of\nthe mempolicy\u0027s nodes. It is used when there is no real lock to protect\nthe mempolicy in the read-side. Otherwise we can do rebind work at once.\n\nIn order to implement it, we define\n\n\tenum mpol_rebind_step {\n\t\tMPOL_REBIND_ONCE,\n\t\tMPOL_REBIND_STEP1,\n\t\tMPOL_REBIND_STEP2,\n\t\tMPOL_REBIND_NSTEP,\n\t};\n\nIf the mempolicy needn\u0027t be updated by two steps, we can pass\nMPOL_REBIND_ONCE to the rebind functions. Or we can pass\nMPOL_REBIND_STEP1 to do the first step of the rebind work and pass\nMPOL_REBIND_STEP2 to do the second step work.\n\nBesides that, it maybe long time between these two step and we have to\nrelease the lock that protects mempolicy and mems_allowed. If we hold the\nlock once again, we must check whether the current mempolicy is under the\nrebinding (the first step has been done) or not, because the task may\nalloc a new mempolicy when we don\u0027t hold the lock. So we defined the\nfollowing flag to identify it:\n\n#define MPOL_F_REBINDING (1 \u003c\u003c 2)\n\nThe new functions will be used in the next patch.\n\nSigned-off-by: Miao Xie \u003cmiaox@cn.fujitsu.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Hugh Dickins \u003chugh.dickins@tiscali.co.uk\u003e\nCc: Ravikiran Thirumalai \u003ckiran@scalex86.org\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e13861d822f8f443ca0c020ea8fc2dc01039cd63", "tree": "0e1ccaa6a2d682f7636b9d5ef5d4c73a28074988", "parents": [ "4b50dc26a0a25a9d1998d206e1f7d849aa78063f" ], "author": { "name": "Minchan Kim", "email": "minchan.kim@gmail.com", "time": "Mon May 24 14:31:59 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:06:57 2010 -0700" }, "message": "mm: remove return value of putback_lru_pages()\n\nputback_lru_page() never can fail. So it doesn\u0027t matter count of \"the\nnumber of pages put back\".\n\nIn addition, users of this functions don\u0027t use return value.\n\nLet\u0027s remove unnecessary code.\n\nSigned-off-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nReviewed-by: Rik van Riel \u003criel@redhat.com\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e9d6c157385e4efa61cb8293e425c9d8beba70d3", "tree": "fca2452b46328c9005b8a4043a22b7b1b4d47d0c", "parents": [ "1f0a738868cbfe20ae53a00b7c302c04ef7ab8fc" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Mon May 24 14:31:48 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 25 08:06:56 2010 -0700" }, "message": "tmpfs: insert tmpfs cache pages to inactive list at first\n\nShaohua Li reported parallel file copy on tmpfs can lead to OOM killer.\nThis is regression of caused by commit 9ff473b9a7 (\"vmscan: evict\nstreaming IO first\"). Wow, It is 2 years old patch!\n\nCurrently, tmpfs file cache is inserted active list at first. This means\nthat the insertion doesn\u0027t only increase numbers of pages in anon LRU, but\nit also reduces anon scanning ratio. Therefore, vmscan will get totally\nconfused. It scans almost only file LRU even though the system has plenty\nunused tmpfs pages.\n\nHistorically, lru_cache_add_active_anon() was used for two reasons.\n1) Intend to priotize shmem page rather than regular file cache.\n2) Intend to avoid reclaim priority inversion of used once pages.\n\nBut we\u0027ve lost both motivation because (1) Now we have separate anon and\nfile LRU list. then, to insert active list doesn\u0027t help such priotize.\n(2) In past, one pte access bit will cause page activation. then to\ninsert inactive list with pte access bit mean higher priority than to\ninsert active list. Its priority inversion may lead to uninteded lru\nchun. but it was already solved by commit 645747462 (vmscan: detect\nmapped file pages used only once). (Thanks Hannes, you are great!)\n\nThus, now we can use lru_cache_add_anon() instead.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReported-by: Shaohua Li \u003cshaohua.li@intel.com\u003e\nReviewed-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nReviewed-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nReviewed-by: Rik van Riel \u003criel@redhat.com\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nAcked-by: Hugh Dickins \u003chughd@google.com\u003e\nCc: Henrique de Moraes Holschuh \u003chmh@hmh.eng.br\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "facd07b07d2a7988f5ce849558838cc953847637", "tree": "269200329390f450d2bc7f0858a8ed114a418374", "parents": [ "66f998f611897319b555364cefd5d6e88a205866" ], "author": { "name": "Josef Bacik", "email": "josef@redhat.com", "time": "Sun May 23 11:00:55 2010 -0400" }, "committer": { "name": "Chris Mason", "email": "chris.mason@oracle.com", "time": "Tue May 25 10:34:55 2010 -0400" }, "message": "direct-io: add a hook for the fs to provide its own submit_bio function\n\nBecause BTRFS can do RAID and such, we need our own submit hook so we can setup\nthe bio\u0027s in the correct fashion, and handle checksum errors properly. So there\nare a few changes here\n\n1) The submit_io hook. This is straightforward, just call this instead of\nsubmit_bio.\n\n2) Allow the fs to return -ENOTBLK for reads. Usually this has only worked for\nwrites, since writes can fallback onto buffered IO. But BTRFS needs the option\nof falling back on buffered IO if it encounters a compressed extent, since we\nneed to read the entire extent in and decompress it. So if we get -ENOTBLK back\nfrom get_block we\u0027ll return back and fallback on buffered just like the write\ncase.\n\nI\u0027ve tested these changes with fsx and everything seems to work. Thanks,\n\nSigned-off-by: Josef Bacik \u003cjosef@redhat.com\u003e\nSigned-off-by: Chris Mason \u003cchris.mason@oracle.com\u003e\n" }, { "commit": "9f79e9db2e282857912bcfe7f741bcdd5c46e860", "tree": "690e0647b56032ef703112e6e03c0b65ddaea10c", "parents": [ "192bbb95ca16f2b4d4383e76b3262672e6116daa" ], "author": { "name": "Haojian Zhuang", "email": "haojian.zhuang@marvell.com", "time": "Tue May 04 09:54:51 2010 -0400" }, "committer": { "name": "Liam Girdwood", "email": "lrg@slimlogic.co.uk", "time": "Tue May 25 10:16:02 2010 +0100" }, "message": "regulator: use voltage number array in 88pm860x\n\nA lot of condition comparision statements are used in original driver. These\nstatements are used to check the boundary of voltage numbers since voltage\nnumber isn\u0027t linear.\n\nNow use array of voltage numbers instead. Clean code with simpler way.\n\nSigned-off-by: Haojian Zhuang \u003chaojian.zhuang@marvell.com\u003e\nAcked-by: Mark Brown \u003cbroonie@opensource.wolfsonmicro.com\u003e\nSigned-off-by: Liam Girdwood \u003clrg@slimlogic.co.uk\u003e\n" }, { "commit": "0178f3e28e2166664916265c5d4922b1376b9fa1", "tree": "00dbd793ed75ad98e8d32a5798ab243c0f5b4185", "parents": [ "7e125f7b9cbfce4101191b8076d606c517a73066" ], "author": { "name": "Mark Brown", "email": "broonie@opensource.wolfsonmicro.com", "time": "Mon Apr 26 15:18:14 2010 +0100" }, "committer": { "name": "Liam Girdwood", "email": "lrg@slimlogic.co.uk", "time": "Tue May 25 10:16:01 2010 +0100" }, "message": "regulator: Allow regulator-regulator supplies to be specified by name\n\nWhen one regulator supplies another allow the relationship to be specified\nusing names rather than struct regulators, in a similar manner to that\nallowed for consumer supplies. This allows static configuration at compile\ntime, reducing the need for dynamic init code.\n\nAlso change the references to LINE supply to be system supply since line\nis sometimes used for actual supplies and therefore potentially confusing.\n\nSigned-off-by: Mark Brown \u003cbroonie@opensource.wolfsonmicro.com\u003e\nSigned-off-by: Liam Girdwood \u003clrg@slimlogic.co.uk\u003e\n" }, { "commit": "b1e50ebcf24668e57f058deb48b0704b5391ed0f", "tree": "17e1b69b249d0738317b732186340c9dd053f1a1", "parents": [ "0c2a2ae32793e3500a15a449612485f5d17dd431", "7e125f7b9cbfce4101191b8076d606c517a73066" ], "author": { "name": "Grant Likely", "email": "grant.likely@secretlab.ca", "time": "Tue May 25 00:38:26 2010 -0600" }, "committer": { "name": "Grant Likely", "email": "grant.likely@secretlab.ca", "time": "Tue May 25 00:38:26 2010 -0600" }, "message": "Merge remote branch \u0027origin\u0027 into secretlab/next-spi\n" }, { "commit": "41c4221ca6b9db8ea63d2c2323c0e7a8865eba6e", "tree": "31e12f709964805f9d73cf834297950b9ad09000", "parents": [ "6e27388f1bd60b55e0b1a83d14233e6c7ad33700" ], "author": { "name": "hartleys", "email": "hartleys@visionengravers.com", "time": "Thu May 06 20:51:04 2010 +0000" }, "committer": { "name": "Grant Likely", "email": "grant.likely@secretlab.ca", "time": "Tue May 25 00:23:17 2010 -0600" }, "message": "spi: move bitbang txrx utility functions to private header\n\nA number of files in drivers/spi fail checkincludes.pl due to the double\ninclude of \u003clinux/spi/spi_bitbang.h\u003e.\n\nThe first include is needed to get the struct spi_bitbang definition and\nthe spi_bitbang_* function prototypes.\n\nThe second include happens after defining EXPAND_BITBANG_TXRX to get the\ninlined bitbang_txrx_* utility functions.\n\nThe \u003clinux/spi/spi_bitbang.h\u003e header is also included by a number of other\nspi drivers, as well as some arch/ code, in order to use struct spi_bitbang\nand the associated functions.\n\nTo fix the double include, and remove any potential confusion about it, move\nthe inlined bitbang_txrx_* functions to a new private header in drivers/spi\nand also remove the need to define EXPAND_BITBANG_TXRX.\n\nSigned-off-by: H Hartley Sweeten \u003chsweeten@visionengravers.com\u003e\nSigned-off-by: Grant Likely \u003cgrant.likely@secretlab.ca\u003e\n" }, { "commit": "781c7b129b1beb876905f7212927aa0ee1b022e5", "tree": "678bfc0d0a5cdd24c55024b5c2d2674eb5bea572", "parents": [ "556f4aeb7d9dfac8573d0281dd555bd3210d8366" ], "author": { "name": "Linus Walleij", "email": "linus.walleij@stericsson.com", "time": "Fri May 07 08:40:53 2010 +0000" }, "committer": { "name": "Grant Likely", "email": "grant.likely@secretlab.ca", "time": "Tue May 25 00:23:14 2010 -0600" }, "message": "spi/pl022: add support for the PL023 derivate\n\nThis adds support for a further ST variant of the PL022 called\nPL023. Some differences in the control registers due to being\nstripped down to SPI mode only, and a new clock feedback sample\ndelay config setting is available.\n\nSigned-off-by: Linus Walleij \u003clinus.walleij@stericsson.com\u003e\nSigned-off-by: Grant Likely \u003cgrant.likely@secretlab.ca\u003e\n" }, { "commit": "556f4aeb7d9dfac8573d0281dd555bd3210d8366", "tree": "43103539c2cdaae5a1032168076c52049e846025", "parents": [ "338ff2982d969a8e09ca356552cb5022ad380766" ], "author": { "name": "Linus Walleij", "email": "linus.walleij@stericsson.com", "time": "Wed May 05 09:28:15 2010 +0000" }, "committer": { "name": "Grant Likely", "email": "grant.likely@secretlab.ca", "time": "Tue May 25 00:23:13 2010 -0600" }, "message": "spi/pl022: fix up differences between ARM and ST versions\n\nThe PL022 SPI driver did not cleanly separate between the\noriginal unmodified ARM version and the ST Microelectronics\nversions. Split this more cleanly and fix some whitespace\nmoaning from checkpatch at the same time.\n\nSigned-off-by: Linus Walleij \u003clinus.walleij@stericsson.com\u003e\nSigned-off-by: Grant Likely \u003cgrant.likely@secretlab.ca\u003e\n" }, { "commit": "7e125f7b9cbfce4101191b8076d606c517a73066", "tree": "ded140947b146cc7177519cd23cf81912de32687", "parents": [ "064e297c324fff9b62226aae5dc468ebb272433c", "a9ddabc52ce3757a4331d6c1e8bf4065333cc51b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon May 24 08:05:29 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon May 24 08:05:29 2010 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6:\n cmd640: fix kernel oops in test_irq() method\n pdc202xx_old: ignore \"FIFO empty\" bit in test_irq() method\n pdc202xx_old: wire test_irq() method for PDC2026x\n IDE: pass IRQ flags to the IDE core\n ide: fix comment typo in ide.h\n" }, { "commit": "f13771187b9423b824f32518319f6da85d819003", "tree": "c431cf16c286065a302d5f3fb43fc1abac7e4047", "parents": [ "15953654cc312429740fd58fb37a5a3d63a54376", "9f37af654fda88a8dcca74c785f6c20e52758866" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon May 24 08:01:10 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon May 24 08:01:10 2010 -0700" }, "message": "Merge branch \u0027bkl/ioctl\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing\n\n* \u0027bkl/ioctl\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing:\n uml: Pushdown the bkl from harddog_kern ioctl\n sunrpc: Pushdown the bkl from sunrpc cache ioctl\n sunrpc: Pushdown the bkl from ioctl\n autofs4: Pushdown the bkl from ioctl\n uml: Convert to unlocked_ioctls to remove implicit BKL\n ncpfs: BKL ioctl pushdown\n coda: Clean-up whitespace problems in pioctl.c\n coda: BKL ioctl pushdown\n drivers: Push down BKL into various drivers\n isdn: Push down BKL into ioctl functions\n scsi: Push down BKL into ioctl functions\n dvb: Push down BKL into ioctl functions\n smbfs: Push down BKL into ioctl function\n coda/psdev: Remove BKL from ioctl function\n um/mmapper: Remove BKL usage\n sn_hwperf: Kill BKL usage\n hfsplus: Push down BKL into ioctl function\n" }, { "commit": "15953654cc312429740fd58fb37a5a3d63a54376", "tree": "bbb6bf8d4ea943545e29ce896848182c4f206298", "parents": [ "c3ed9ea4ab460080dea9449c709be9316c670c72", "24af3202459d9a25643009b1ab8ab5ff04d94b49" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon May 24 08:00:13 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon May 24 08:00:13 2010 -0700" }, "message": "Merge git://git.infradead.org/battery-2.6\n\n* git://git.infradead.org/battery-2.6:\n ds2760_battery: Document ABI change\n ds2760_battery: Make charge_now and charge_full writeable\n power_supply: Add support for writeable properties\n power_supply: Use attribute groups\n power_supply: Add test_power driver\n tosa_battery: Fix build error due to direct driver_data usage\n wm97xx_battery: Quieten sparse warning (bat_set_pdata not declared)\n ds2782_battery: Get rid of magic numbers in driver_data\n ds2782_battery: Add support for ds2786 battery gas gauge\n pda_power: Add function callbacks for suspend and resume\n wm831x_power: Use genirq\n Driver for Zipit Z2 battery chip\n ds2782_battery: Fix clientdata on removal\n" } ], "next": "0fed2b5cb4c04336b26b0cbf6f9a8c07081f79a6" }