)]}'
{
  "log": [
    {
      "commit": "42933bac11e811f02200c944d8562a15f8ec4ff0",
      "tree": "fcdd9afe56eb0e746565ddd1f92f22d36678b843",
      "parents": [
        "2b9accbee563f535046ff2cd382d0acaa92e130c",
        "25985edcedea6396277003854657b5f3cb31a628"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 07 11:14:49 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 07 11:14:49 2011 -0700"
      },
      "message": "Merge branch \u0027for-linus2\u0027 of git://git.profusion.mobi/users/lucas/linux-2.6\n\n* \u0027for-linus2\u0027 of git://git.profusion.mobi/users/lucas/linux-2.6:\n  Fix common misspellings\n"
    },
    {
      "commit": "982134ba62618c2d69fbbbd166d0a11ee3b7e3d8",
      "tree": "32aae4719abbd338864ab6faf9e8ebbfc38b1600",
      "parents": [
        "6221f222c0ebf1acdf7abcf927178f40e1a65e2a"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 07 07:35:50 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 07 07:35:51 2011 -0700"
      },
      "message": "mm: avoid wrapping vm_pgoff in mremap()\n\nThe normal mmap paths all avoid creating a mapping where the pgoff\ninside the mapping could wrap around due to overflow.  However, an\nexpanding mremap() can take such a non-wrapping mapping and make it\nbigger and cause a wrapping condition.\n\nNoticed by Robert Swiecki when running a system call fuzzer, where it\ncaused a BUG_ON() due to terminally confusing the vma_prio_tree code.  A\nvma dumping patch by Hugh then pinpointed the crazy wrapped case.\n\nReported-and-tested-by: Robert Swiecki \u003crobert@swiecki.net\u003e\nAcked-by: Hugh Dickins \u003chughd@google.com\u003e\nCc: stable@kernel.org\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "25985edcedea6396277003854657b5f3cb31a628",
      "tree": "f026e810210a2ee7290caeb737c23cb6472b7c38",
      "parents": [
        "6aba74f2791287ec407e0f92487a725a25908067"
      ],
      "author": {
        "name": "Lucas De Marchi",
        "email": "lucas.demarchi@profusion.mobi",
        "time": "Wed Mar 30 22:57:33 2011 -0300"
      },
      "committer": {
        "name": "Lucas De Marchi",
        "email": "lucas.demarchi@profusion.mobi",
        "time": "Thu Mar 31 11:26:23 2011 -0300"
      },
      "message": "Fix common misspellings\n\nFixes generated by \u0027codespell\u0027 and manually reviewed.\n\nSigned-off-by: Lucas De Marchi \u003clucas.demarchi@profusion.mobi\u003e\n"
    },
    {
      "commit": "eefbab599531240adaffa1d23900afbc8b0342bd",
      "tree": "2beb38a94aca40c7e5a0396503968d041e584bf9",
      "parents": [
        "90f1e7481eebfd47e7dbf7c8c0cbfe31e025e031",
        "3062aa50a6b2c3103470178fe7506c450d79ebe5"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 29 11:43:30 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 29 11:43:30 2011 -0700"
      },
      "message": "Merge branch \u0027frv\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-frv\n\n* \u0027frv\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-frv:\n  FRV: Use generic show_interrupts()\n  FRV: Convert genirq namespace\n  frv: Select GENERIC_HARDIRQS_NO_DEPRECATED\n  frv: Convert cpu irq_chip to new functions\n  frv: Convert mb93493 irq_chip to new functions\n  frv: Convert mb93093 irq_chip to new function\n  frv: Convert mb93091 irq_chip to new functions\n  frv: Fix typo from __do_IRQ overhaul\n  frv: Remove stale irq_chip.end\n  FRV: Do some cleanups\n  FRV: Missing node arg in alloc_thread_info_node() macro\n  NOMMU: implement access_remote_vm\n  NOMMU: support SMP dynamic percpu_alloc\n  NOMMU: percpu should use is_vmalloc_addr().\n"
    },
    {
      "commit": "f55f199b7d76a01e7ce9d1c3bb004327e075c327",
      "tree": "66aecc92b98f3425aeeed19cccfe29de017ade7e",
      "parents": [
        "b554cb426a955a267dba524f98f99e29bc947643"
      ],
      "author": {
        "name": "Mike Frysinger",
        "email": "vapier@gentoo.org",
        "time": "Tue Mar 29 14:05:12 2011 +0100"
      },
      "committer": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Tue Mar 29 14:05:12 2011 +0100"
      },
      "message": "NOMMU: implement access_remote_vm\n\nRecent vm changes brought in a new function which the core procfs code\nutilizes.  So implement it for nommu systems too to avoid link failures.\n\nSigned-off-by: Mike Frysinger \u003cvapier@gentoo.org\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nTested-by: Simon Horman \u003chorms@verge.net.au\u003e\nTested-by: Ithamar Adema \u003cithamar.adema@team-embedded.nl\u003e\nAcked-by: Greg Ungerer \u003cgerg@uclinux.org\u003e\n"
    },
    {
      "commit": "eac522ef438f8ea173569fd0469371bc5d317947",
      "tree": "890a1a68a65768b9f0de66083e566737a65c8483",
      "parents": [
        "16c29dafcc86024048f1dbb8349d31cb22c7c55a"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Mon Mar 28 12:53:29 2011 +0100"
      },
      "committer": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Mon Mar 28 12:53:29 2011 +0100"
      },
      "message": "NOMMU: percpu should use is_vmalloc_addr().\n\nper_cpu_ptr_to_phys() uses VMALLOC_START and VMALLOC_END to determine if an\naddress is in the vmalloc() region or not.  This is incorrect on NOMMU as\nthere is no real vmalloc() capability (vmalloc() is emulated by kmalloc()).\n\nThe correct way to do this is to use is_vmalloc_addr().  This encapsulates the\nvmalloc() region test in MMU mode and just returns 0 in NOMMU mode.\n\nOn FRV in NOMMU mode, the percpu compilation fails without this patch:\n\nmm/percpu.c: In function \u0027per_cpu_ptr_to_phys\u0027:\nmm/percpu.c:1011: error: \u0027VMALLOC_START\u0027 undeclared (first use in this function)\nmm/percpu.c:1011: error: (Each undeclared identifier is reported only once\nmm/percpu.c:1011: error: for each function it appears in.)\nmm/percpu.c:1012: error: \u0027VMALLOC_END\u0027 undeclared (first use in this function)\nmm/percpu.c:1018: warning: control reaches end of non-void function\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n"
    },
    {
      "commit": "ae91dbfc9949cf042c45798557b48d3b83bc3635",
      "tree": "6af0edfd904b957a2f6ca65ae4a5fdebb78ca5b8",
      "parents": [
        "d7c3f8cee81f4548de0513403b74131aee655576"
      ],
      "author": {
        "name": "Randy Dunlap",
        "email": "randy.dunlap@oracle.com",
        "time": "Sat Mar 26 13:27:01 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun Mar 27 19:30:18 2011 -0700"
      },
      "message": "mm: fix memory.c incorrect kernel-doc\n\nFix mm/memory.c incorrect kernel-doc function notation:\n\n  Warning(mm/memory.c:3718): Cannot understand  * @access_remote_vm - access another process\u0027 address space\n   on line 3718 - I thought it was a doc line\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d39dd11c3e6a7af5c20bfac40594db36cf270f42",
      "tree": "6384e07fa2f347b286cde9754c4507b5a738ab47",
      "parents": [
        "30f5b28e7f937608e0407edaa459cc8161de81d9",
        "0b2d0724e26a335cd326eb7ad552c109116a8795"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Mar 24 19:01:30 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Mar 24 19:01:30 2011 -0700"
      },
      "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:\n  fs: simplify iget \u0026 friends\n  fs: pull inode-\u003ei_lock up out of writeback_single_inode\n  fs: rename inode_lock to inode_hash_lock\n  fs: move i_wb_list out from under inode_lock\n  fs: move i_sb_list out from under inode_lock\n  fs: remove inode_lock from iput_final and prune_icache\n  fs: Lock the inode LRU list separately\n  fs: factor inode disposal\n  fs: protect inode-\u003ei_state with inode-\u003ei_lock\n  autofs4: Do not potentially dereference NULL pointer returned by fget() in autofs_dev_ioctl_setpipefd()\n  autofs4 - remove autofs4_lock\n  autofs4 - fix d_manage() return on rcu-walk\n  autofs4 - fix autofs4_expire_indirect() traversal\n  autofs4 - fix dentry leak in autofs4_expire_direct()\n  autofs4 - reinstate last used update on access\n  vfs - check non-mountpoint dentry might block in __follow_mount_rcu()\n"
    },
    {
      "commit": "a66979abad090b2765a6c6790c9fdeab996833f2",
      "tree": "e48b2d0fac8f96456286a503aeeb952620234961",
      "parents": [
        "55fa6091d83160ca772fc37cebae45d42695a708"
      ],
      "author": {
        "name": "Dave Chinner",
        "email": "dchinner@redhat.com",
        "time": "Tue Mar 22 22:23:41 2011 +1100"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu Mar 24 21:17:51 2011 -0400"
      },
      "message": "fs: move i_wb_list out from under inode_lock\n\nProtect the inode writeback list with a new global lock\ninode_wb_list_lock and use it to protect the list manipulations and\ntraversals. This lock replaces the inode_lock as the inodes on the\nlist can be validity checked while holding the inode-\u003ei_lock and\nhence the inode_lock is no longer needed to protect the list.\n\nSigned-off-by: Dave Chinner \u003cdchinner@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "250df6ed274d767da844a5d9f05720b804240197",
      "tree": "b74f49a86c4451d9e3e82f90e3f791163025be21",
      "parents": [
        "3dc8fe4dca9cd3e4aa828ed36451e2bcfd2350da"
      ],
      "author": {
        "name": "Dave Chinner",
        "email": "dchinner@redhat.com",
        "time": "Tue Mar 22 22:23:36 2011 +1100"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu Mar 24 21:16:31 2011 -0400"
      },
      "message": "fs: protect inode-\u003ei_state with inode-\u003ei_lock\n\nProtect inode state transitions and validity checks with the\ninode-\u003ei_lock. This enables us to make inode state transitions\nindependently of the inode_lock and is the first step to peeling\naway the inode_lock from the code.\n\nThis requires that __iget() is done atomically with i_state checks\nduring list traversals so that we don\u0027t race with another thread\nmarking the inode I_FREEING between the state check and grabbing the\nreference.\n\nAlso remove the unlock_new_inode() memory barrier optimisation\nrequired to avoid taking the inode_lock when clearing I_NEW.\nSimplify the code by simply taking the inode-\u003ei_lock around the\nstate change and wakeup. Because the wakeup is no longer tricky,\nremove the wake_up_inode() function and open code the wakeup where\nnecessary.\n\nSigned-off-by: Dave Chinner \u003cdchinner@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "a7351402574eec1308b099cc8e8108e715a2c8b6",
      "tree": "09e3c2a5f3522f4c4ed5d92c0a87ec1cf48ca443",
      "parents": [
        "b2b755b5f10eb32fbdc73a9907c07006b17f714b",
        "b8c4c96ed4cdecf5ae51fc6f4c006658e873047f"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Mar 24 17:51:12 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Mar 24 17:51:12 2011 -0700"
      },
      "message": "Merge branch \u0027slab/urgent\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6\n\n* \u0027slab/urgent\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:\n  SLUB: Write to per cpu data when allocating it\n  slub: Fix debugobjects with lockless fastpath\n"
    },
    {
      "commit": "b2b755b5f10eb32fbdc73a9907c07006b17f714b",
      "tree": "444c7a93cc6c3dd109a4b23f1f76cdc38cf5eb10",
      "parents": [
        "e285c1746accb80620e511f9c72e9893beeedc0e"
      ],
      "author": {
        "name": "David Rientjes",
        "email": "rientjes@google.com",
        "time": "Thu Mar 24 15:18:15 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Mar 24 17:49:37 2011 -0700"
      },
      "message": "lib, arch: add filter argument to show_mem and fix private implementations\n\nCommit ddd588b5dd55 (\"oom: suppress nodes that are not allowed from\nmeminfo on oom kill\") moved lib/show_mem.o out of lib/lib.a, which\nresulted in build warnings on all architectures that implement their own\nversions of show_mem():\n\n\tlib/lib.a(show_mem.o): In function `show_mem\u0027:\n\tshow_mem.c:(.text+0x1f4): multiple definition of `show_mem\u0027\n\tarch/sparc/mm/built-in.o:(.text+0xd70): first defined here\n\nThe fix is to remove __show_mem() and add its argument to show_mem() in\nall implementations to prevent this breakage.\n\nArchitectures that implement their own show_mem() actually don\u0027t do\nanything with the argument yet, but they could be made to filter nodes\nthat aren\u0027t allowed in the current context in the future just like the\ngeneric implementation.\n\nReported-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nReported-by: James Bottomley \u003cJames.Bottomley@hansenpartnership.com\u003e\nSuggested-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b8c4c96ed4cdecf5ae51fc6f4c006658e873047f",
      "tree": "d08a3abe924d54284486839864d73e9d8bba6180",
      "parents": [
        "f9b615de4663c4b852e07257e9f967df6a0161c0"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "cl@linux.com",
        "time": "Thu Mar 24 14:51:38 2011 -0500"
      },
      "committer": {
        "name": "Pekka Enberg",
        "email": "penberg@kernel.org",
        "time": "Thu Mar 24 21:53:07 2011 +0200"
      },
      "message": "SLUB: Write to per cpu data when allocating it\n\nIt turns out that the cmpxchg16b emulation has to access vmalloced\npercpu memory with interrupts disabled. If the memory has never\nbeen touched before then the fault necessary to establish the\nmapping will not to occur and the kernel will fail on boot.\n\nFix that by reusing the CONFIG_PREEMPT code that writes the\ncpu number into a field on every cpu. Writing to the per cpu\narea before causes the mapping to be established before we get\nto a cmpxchg16b emulation.\n\nTested-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Christoph Lameter \u003ccl@linux.com\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\n"
    },
    {
      "commit": "f9b615de4663c4b852e07257e9f967df6a0161c0",
      "tree": "5aedfe0d17cbe0d39cf91d17a889b8bb6ae271e6",
      "parents": [
        "6d1e9a42e7176bbce9348274784b2e5f69223936"
      ],
      "author": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Thu Mar 24 21:26:46 2011 +0200"
      },
      "committer": {
        "name": "Pekka Enberg",
        "email": "penberg@kernel.org",
        "time": "Thu Mar 24 21:26:46 2011 +0200"
      },
      "message": "slub: Fix debugobjects with lockless fastpath\n\nOn Thu, 24 Mar 2011, Ingo Molnar wrote:\n\u003e RIP: 0010:[\u003cffffffff810570a9\u003e]  [\u003cffffffff810570a9\u003e] get_next_timer_interrupt+0x119/0x260\n\nThat\u0027s a typical timer crash, but you were unable to debug it with\ndebugobjects because commit d3f661d6 broke those.\n\nCc: Christoph Lameter \u003ccl@linux.com\u003e\nTested-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\n"
    },
    {
      "commit": "6c5103890057b1bb781b26b7aae38d33e4c517d8",
      "tree": "e6e57961dcddcb5841acb34956e70b9dc696a880",
      "parents": [
        "3dab04e6978e358ad2307bca563fabd6c5d2c58b",
        "9d2e157d970a73b3f270b631828e03eb452d525e"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Mar 24 10:16:26 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Mar 24 10:16:26 2011 -0700"
      },
      "message": "Merge branch \u0027for-2.6.39/core\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027for-2.6.39/core\u0027 of git://git.kernel.dk/linux-2.6-block: (65 commits)\n  Documentation/iostats.txt: bit-size reference etc.\n  cfq-iosched: removing unnecessary think time checking\n  cfq-iosched: Don\u0027t clear queue stats when preempt.\n  blk-throttle: Reset group slice when limits are changed\n  blk-cgroup: Only give unaccounted_time under debug\n  cfq-iosched: Don\u0027t set active queue in preempt\n  block: fix non-atomic access to genhd inflight structures\n  block: attempt to merge with existing requests on plug flush\n  block: NULL dereference on error path in __blkdev_get()\n  cfq-iosched: Don\u0027t update group weights when on service tree\n  fs: assign sb-\u003es_bdi to default_backing_dev_info if the bdi is going away\n  block: Require subsystems to explicitly allocate bio_set integrity mempool\n  jbd2: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging\n  jbd: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging\n  fs: make fsync_buffers_list() plug\n  mm: make generic_writepages() use plugging\n  blk-cgroup: Add unaccounted time to timeslice_used.\n  block: fixup plugging stubs for !CONFIG_BLOCK\n  block: remove obsolete comments for blkdev_issue_zeroout.\n  blktrace: Use rq-\u003ecmd_flags directly in blk_add_trace_rq.\n  ...\n\nFix up conflicts in fs/{aio.c,super.c}\n"
    },
    {
      "commit": "b81a618dcd3ea99de292dbe624f41ca68f464376",
      "tree": "c5fbe44f944da9d7dc0c224116be77094d379c8a",
      "parents": [
        "2f284c846331fa44be1300a3c2c3e85800268a00",
        "a9712bc12c40c172e393f85a9b2ba8db4bf59509"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 20:51:42 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 20:51:42 2011 -0700"
      },
      "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:\n  deal with races in /proc/*/{syscall,stack,personality}\n  proc: enable writing to /proc/pid/mem\n  proc: make check_mem_permission() return an mm_struct on success\n  proc: hold cred_guard_mutex in check_mem_permission()\n  proc: disable mem_write after exec\n  mm: implement access_remote_vm\n  mm: factor out main logic of access_process_vm\n  mm: use mm_struct to resolve gate vma\u0027s in __get_user_pages\n  mm: arch: rename in_gate_area_no_task to in_gate_area_no_mm\n  mm: arch: make in_gate_area take an mm_struct instead of a task_struct\n  mm: arch: make get_gate_vma take an mm_struct instead of a task_struct\n  x86: mark associated mm when running a task in 32 bit compatibility mode\n  x86: add context tag to mark mm when running a task in 32-bit compatibility mode\n  auxv: require the target to be tracable (or yourself)\n  close race in /proc/*/environ\n  report errors in /proc/*/*map* sanely\n  pagemap: close races with suid execve\n  make sessionid permissions in /proc/*/task/* match those in /proc/*\n  fix leaks in path_lookupat()\n\nFix up trivial conflicts in fs/proc/base.c\n"
    },
    {
      "commit": "93a72052be81823fa1584b9be037d51924f9efa4",
      "tree": "4f5c824c8fe3fb737e27b91bfd60c10d092dc3e9",
      "parents": [
        "8547727756a7322b99aa313ce50fe15d8f858872"
      ],
      "author": {
        "name": "Olaf Hering",
        "email": "olaf@aepfle.de",
        "time": "Wed Mar 23 16:43:29 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:47:19 2011 -0700"
      },
      "message": "crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn\n\nThe Xen PV drivers in a crashed HVM guest can not connect to the dom0\nbackend drivers because both frontend and backend drivers are still in\nconnected state.  To run the connection reset function only in case of a\ncrashdump, the is_kdump_kernel() function needs to be available for the PV\ndriver modules.\n\nConsolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn into\nkernel/crash_dump.c Also export elfcorehdr_addr to make is_kdump_kernel()\nusable for modules.\n\nLeave \u0027elfcorehdr\u0027 as early_param().  This changes powerpc from __setup()\nto early_param().  It adds an address range check from x86 also on ia64\nand powerpc.\n\n[akpm@linux-foundation.org: additional #includes]\n[akpm@linux-foundation.org: remove elfcorehdr_addr export]\n[akpm@linux-foundation.org: fix for Tejun\u0027s mm/nobootmem.c changes]\nSigned-off-by: Olaf Hering \u003colaf@aepfle.de\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f9434ad1552427fab49336e1a6e3ef121895b9d1",
      "tree": "5284bccbf71e601d056d138e894c27726047dc82",
      "parents": [
        "5a6475a4e162200f43855e2d42bbf55bcca1a9f2"
      ],
      "author": {
        "name": "David Rientjes",
        "email": "rientjes@google.com",
        "time": "Wed Mar 23 16:42:44 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:33 2011 -0700"
      },
      "message": "memcg: give current access to memory reserves if it\u0027s trying to die\n\nWhen a memcg is oom and current has already received a SIGKILL, then give\nit access to memory reserves with a higher scheduling priority so that it\nmay quickly exit and free its memory.\n\nThis is identical to the global oom killer and is done even before\nchecking for panic_on_oom: a pending SIGKILL here while panic_on_oom is\nselected is guaranteed to have come from userspace; the thread only needs\naccess to memory reserves to exit and thus we don\u0027t unnecessarily panic\nthe machine until the kernel has no last resort to free memory.\n\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nAcked-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": "5a6475a4e162200f43855e2d42bbf55bcca1a9f2",
      "tree": "361ef686ef833cd1560e884ca1420d512e4d06bb",
      "parents": [
        "6cfddb261555dd0c0529a5fb7cf8bc5b85ad95a5"
      ],
      "author": {
        "name": "KAMEZAWA Hiroyuki",
        "email": "kamezawa.hiroyu@jp.fujitsu.com",
        "time": "Wed Mar 23 16:42:42 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:33 2011 -0700"
      },
      "message": "memcg: fix leak on wrong LRU with FUSE\n\nfs/fuse/dev.c::fuse_try_move_page() does\n\n   (1) remove a page by -\u003esteal()\n   (2) re-add the page to page cache\n   (3) link the page to LRU if it was not on LRU at (1)\n\nThis implies the page is _on_ LRU when it\u0027s added to radix-tree.  So, the\npage is added to memory cgroup while it\u0027s on LRU.  because LRU is lazy and\nno one flushs it.\n\nThis is the same behavior as SwapCache and needs special care as\n - remove page from LRU before overwrite pc-\u003emem_cgroup.\n - add page to LRU after overwrite pc-\u003emem_cgroup.\n\nAnd we need to taking care of pagevec.\n\nIf PageLRU(page) is set before we add PCG_USED bit, the page will not be\nadded to memcg\u0027s LRU (in short period).  So, regardlress of PageLRU(page)\nvalue before commit_charge(), we need to check PageLRU(page) after\ncommit_charge().\n\nAddresses https://bugzilla.kernel.org/show_bug.cgi?id\u003d30432\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nReviewed-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nReported-by: Daniel Poelzleithner \u003cpoelzi@poelzi.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "6cfddb261555dd0c0529a5fb7cf8bc5b85ad95a5",
      "tree": "d6c966290c7a8224171c850098767a6fbfa5747b",
      "parents": [
        "dde79e005a769d800166687c9e00d50d93e411ff"
      ],
      "author": {
        "name": "Michal Hocko",
        "email": "mhocko@suse.cz",
        "time": "Wed Mar 23 16:42:41 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:33 2011 -0700"
      },
      "message": "memcg: page_cgroup array is never stored on reserved pages\n\nKAMEZAWA Hiroyuki noted that free_pages_cgroup doesn\u0027t have to check for\nPageReserved because we never store the array on reserved pages (neither\nalloc_pages_exact nor vmalloc use those pages).\n\nSo we can replace the check by a BUG_ON.\n\nSigned-off-by: Michal Hocko \u003cmhocko@suse.cz\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": "dde79e005a769d800166687c9e00d50d93e411ff",
      "tree": "a38166f535b48063bd680deb64edbedf4395cfed",
      "parents": [
        "4be4489feae6da890765cc1bdc1af5e4f8c4b75f"
      ],
      "author": {
        "name": "Michal Hocko",
        "email": "mhocko@suse.cz",
        "time": "Wed Mar 23 16:42:40 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:32 2011 -0700"
      },
      "message": "page_cgroup: reduce allocation overhead for page_cgroup array for CONFIG_SPARSEMEM\n\nCurrently we are allocating a single page_cgroup array per memory section\n(stored in mem_section-\u003ebase) when CONFIG_SPARSEMEM is selected.  This is\ncorrect but memory inefficient solution because the allocated memory\n(unless we fall back to vmalloc) is not kmalloc friendly:\n\n        - 32b - 16384 entries (20B per entry) fit into 327680B so the\n          524288B slab cache is used\n        - 32b with PAE - 131072 entries with 2621440B fit into 4194304B\n        - 64b - 32768 entries (40B per entry) fit into 2097152 cache\n\nThis is ~37% wasted space per memory section and it sumps up for the whole\nmemory.  On a x86_64 machine it is something like 6MB per 1GB of RAM.\n\nWe can reduce the internal fragmentation by using alloc_pages_exact which\nallocates PAGE_SIZE aligned blocks so we will get down to \u003c4kB wasted\nmemory per section which is much better.\n\nWe still need a fallback to vmalloc because we have no guarantees that we\nwill have a continuous memory of that size (order-10) later on during the\nhotplug events.\n\n[hannes@cmpxchg.org: do not define unused free_page_cgroup() without memory hotplug]\nSigned-off-by: Michal Hocko \u003cmhocko@suse.cz\u003e\nCc: Dave Hansen \u003cdave@linux.vnet.ibm.com\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "4be4489feae6da890765cc1bdc1af5e4f8c4b75f",
      "tree": "c7c1154aaba8e59523024c119fdf769284023a35",
      "parents": [
        "7a159cc9d7987cdb4853f8711f5f89e01cfffe42"
      ],
      "author": {
        "name": "Andrew Morton",
        "email": "akpm@linux-foundation.org",
        "time": "Wed Mar 23 16:42:39 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:32 2011 -0700"
      },
      "message": "mm/memcontrol.c: suppress uninitialized-var warning with older gcc\u0027s\n\nmm/memcontrol.c: In function \u0027mem_cgroup_force_empty\u0027:\nmm/memcontrol.c:2280: warning: \u0027flags\u0027 may be used uninitialized in this function\n\nIt\u0027s a false positive.\n\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Greg Thelen \u003cgthelen@google.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.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": "7a159cc9d7987cdb4853f8711f5f89e01cfffe42",
      "tree": "027e8468d40bfdb51ad9694ec1d5256bb2fdb36f",
      "parents": [
        "e9f8974f2f559b00c87ccfba67bca3903f913d50"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:38 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:31 2011 -0700"
      },
      "message": "memcg: use native word page statistics counters\n\nThe statistic counters are in units of pages, there is no reason to make\nthem 64-bit wide on 32-bit machines.\n\nMake them native words.  Since they are signed, this leaves 31 bit on\n32-bit machines, which can represent roughly 8TB assuming a page size of\n4k.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nSigned-off-by: Greg Thelen \u003cgthelen@google.com\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.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": "e9f8974f2f559b00c87ccfba67bca3903f913d50",
      "tree": "d19f8f7d15eb56e7af98c7ad63db8e86d5873fff",
      "parents": [
        "7ec99d6213b579a84c85ad37f2aa8ded4857c53c"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:37 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:31 2011 -0700"
      },
      "message": "memcg: break out event counters from other stats\n\nFor increasing and decreasing per-cpu cgroup usage counters it makes sense\nto use signed types, as single per-cpu values might go negative during\nupdates.  But this is not the case for only-ever-increasing event\ncounters.\n\nAll the counters have been signed 64-bit so far, which was enough to count\nevents even with the sign bit wasted.\n\nThis patch:\n- divides s64 counters into signed usage counters and unsigned\n  monotonically increasing event counters.\n- converts unsigned event counters into \u0027unsigned long\u0027 rather than\n  \u0027u64\u0027.  This matches the type used by the /proc/vmstat event counters.\n\nThe next patch narrows the signed usage counters type (on 32-bit CPUs,\nthat is).\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nSigned-off-by: Greg Thelen \u003cgthelen@google.com\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.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": "7ec99d6213b579a84c85ad37f2aa8ded4857c53c",
      "tree": "d05bb74c5ca30650ff0622cd1ffd2fd6ddecebd6",
      "parents": [
        "7ffd4ca7a2cdd7a18f0b499a4e9e0e7cf36ba018"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:36 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:30 2011 -0700"
      },
      "message": "memcg: unify charge/uncharge quantities to units of pages\n\nThere is no clear pattern when we pass a page count and when we pass a\nbyte count that is a multiple of PAGE_SIZE.\n\nWe never charge or uncharge subpage quantities, so convert it all to page\ncounts.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.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": "7ffd4ca7a2cdd7a18f0b499a4e9e0e7cf36ba018",
      "tree": "1a2678ce91b9dfb2118d19e0ec457ca5582793f9",
      "parents": [
        "11c9ea4e80fc3be83485667204c68d0a732f3757"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:35 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:30 2011 -0700"
      },
      "message": "memcg: convert uncharge batching from bytes to page granularity\n\nWe never uncharge subpage quantities.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.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": "11c9ea4e80fc3be83485667204c68d0a732f3757",
      "tree": "71f68fb56e427c3ebe12e205e6ea56d72e7bd6ea",
      "parents": [
        "e7018b8d27e0c9aa2200e5b393e0fe9093c6565c"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:34 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:29 2011 -0700"
      },
      "message": "memcg: convert per-cpu stock from bytes to page granularity\n\nWe never keep subpage quantities in the per-cpu stock.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.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": "e7018b8d27e0c9aa2200e5b393e0fe9093c6565c",
      "tree": "13a4d92cd78bc6f97d9a2b6d77880c9ea5d67aa1",
      "parents": [
        "bf1ff2635a5fda207fc870df348bfc766e8dcd4d"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:33 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:29 2011 -0700"
      },
      "message": "memcg: keep only one charge cancelling function\n\nWe have two charge cancelling functions: one takes a page count, the other\na page size.  The second one just divides the parameter by PAGE_SIZE and\nthen calls the first one.  This is trivial, no need for an extra function.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.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": "bf1ff2635a5fda207fc870df348bfc766e8dcd4d",
      "tree": "d4085b3bdbe608f6c8f708cb93080051b341d7fe",
      "parents": [
        "4dc03de1b29901b61cb27e4cab44a7f578dc0fc9"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:32 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:29 2011 -0700"
      },
      "message": "memcg: remove memcg-\u003ereclaim_param_lock\n\nThe reclaim_param_lock is only taken around single reads and writes to\ninteger variables and is thus superfluous.  Drop it.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@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": "4dc03de1b29901b61cb27e4cab44a7f578dc0fc9",
      "tree": "4edca28cf1636015eacd8012023804e4f27b2e34",
      "parents": [
        "6b3ae58efca06623c197fd6d91ded4aa3a8fe039"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:31 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:28 2011 -0700"
      },
      "message": "memcg: charged pages always have valid per-memcg zone info\n\npage_cgroup_zoneinfo() will never return NULL for a charged page, remove\nthe check for it in mem_cgroup_get_reclaim_stat_from_page().\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@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": "6b3ae58efca06623c197fd6d91ded4aa3a8fe039",
      "tree": "6460e4e1ce206d391b862a3d398a9e22e33ecb3c",
      "parents": [
        "5564e88ba6fd2f6dcd83a592771810cd84b5ae80"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:30 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:28 2011 -0700"
      },
      "message": "memcg: remove direct page_cgroup-to-page pointer\n\nIn struct page_cgroup, we have a full word for flags but only a few are\nreserved.  Use the remaining upper bits to encode, depending on\nconfiguration, the node or the section, to enable page_cgroup-to-page\nlookups without a direct pointer.\n\nThis saves a full word for every page in a system with memory cgroups\nenabled.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: Randy Dunlap \u003crandy.dunlap@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": "5564e88ba6fd2f6dcd83a592771810cd84b5ae80",
      "tree": "e2b3a0835067825308a254c7531c891d4d69e701",
      "parents": [
        "de3638d9cdc89ac899225996b8dcedbcbc53bdd2"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:29 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:27 2011 -0700"
      },
      "message": "memcg: condense page_cgroup-to-page lookup points\n\nThe per-cgroup LRU lists string up \u0027struct page_cgroup\u0027s.  To get from\nthose structures to the page they represent, a lookup is required.\nCurrently, the lookup is done through a direct pointer in struct\npage_cgroup, so a lot of functions down the callchain do this lookup by\nthemselves instead of receiving the page pointer from their callers.\n\nThe next patch removes this pointer, however, and the lookup is no longer\nthat straight-forward.  In preparation for that, this patch only leaves\nthe non-optional lookups when coming directly from the LRU list and passes\nthe page down the stack.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Minchan Kim \u003cminchan.kim@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": "de3638d9cdc89ac899225996b8dcedbcbc53bdd2",
      "tree": "86293e32728fdd5696cd321bc65aec09c89d17f3",
      "parents": [
        "97a6c37b34f46feed2544bd40891ee6dd0fd1554"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:28 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:27 2011 -0700"
      },
      "message": "memcg: fold __mem_cgroup_move_account into caller\n\nIt is one logical function, no need to have it split up.\n\nAlso, get rid of some checks from the inner function that ensured the\nsanity of the outer function.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Minchan Kim \u003cminchan.kim@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": "97a6c37b34f46feed2544bd40891ee6dd0fd1554",
      "tree": "6135189ba1f589d7a3b10c5e24da9a42ea9036f5",
      "parents": [
        "ad324e94475a04cfcdfdb11ad20f8ea81268e411"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:27 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:26 2011 -0700"
      },
      "message": "memcg: change page_cgroup_zoneinfo signature\n\nInstead of passing a whole struct page_cgroup to this function, let it\ntake only what it really needs from it: the struct mem_cgroup and the\npage.\n\nThis has the advantage that reading pc-\u003emem_cgroup is now done at the same\nplace where the ordering rules for this pointer are enforced and\nexplained.\n\nIt is also in preparation for removing the pc-\u003epage backpointer.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Minchan Kim \u003cminchan.kim@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": "ad324e94475a04cfcdfdb11ad20f8ea81268e411",
      "tree": "4326bb602a3528071ffd6f3030c3a82c76a3454e",
      "parents": [
        "f212ad7cf9c73f8a7fa160e223dcb3f074441a72"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:26 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:26 2011 -0700"
      },
      "message": "memcg: no uncharged pages reach page_cgroup_zoneinfo\n\nThis patch series removes the direct page pointer from struct page_cgroup,\nwhich saves 20% of per-page memcg memory overhead (Fedora and Ubuntu\nenable memcg per default, openSUSE apparently too).\n\nThe node id or section number is encoded in the remaining free bits of\npc-\u003eflags which allows calculating the corresponding page without the\nextra pointer.\n\nI ran, what I think is, a worst-case microbenchmark that just cats a large\nsparse file to /dev/null, because it means that walking the LRU list on\nbehalf of per-cgroup reclaim and looking up pages from page_cgroups is\nhappening constantly and at a high rate.  But it made no measurable\ndifference.  A profile reported a 0.11% share of the new\nlookup_cgroup_page() function in this benchmark.\n\nThis patch:\n\nAll callsites check PCG_USED before passing pc-\u003emem_cgroup, so the latter\nis never NULL.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Minchan Kim \u003cminchan.kim@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": "f212ad7cf9c73f8a7fa160e223dcb3f074441a72",
      "tree": "95789ef7ce662e86a3e4aded5dfb97c51dc7b0a0",
      "parents": [
        "af4a662144884a7dbb19acbef70878b3b955f928"
      ],
      "author": {
        "name": "Daisuke Nishimura",
        "email": "nishimura@mxp.nes.nec.co.jp",
        "time": "Wed Mar 23 16:42:25 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:25 2011 -0700"
      },
      "message": "memcg: add memcg sanity checks at allocating and freeing pages\n\nAdd checks at allocating or freeing a page whether the page is used (iow,\ncharged) from the view point of memcg.\n\nThis check may be useful in debugging a problem and we did similar checks\nbefore the commit 52d4b9ac(memcg: allocate all page_cgroup at boot).\n\nThis patch adds some overheads at allocating or freeing memory, so it\u0027s\nenabled only when CONFIG_DEBUG_VM is enabled.\n\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Minchan Kim \u003cminchan.kim@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": "af4a662144884a7dbb19acbef70878b3b955f928",
      "tree": "f16b04ed13de1ad1938af551e406879b90d4b0ca",
      "parents": [
        "c14f35c70e068392ccae0b2d6f755baea5eed4d6"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:24 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:25 2011 -0700"
      },
      "message": "memcg: remove NULL check from lookup_page_cgroup() result\n\nThe page_cgroup array is set up before even fork is initialized.  I\nseriously doubt that this code executes before the array is alloc\u0027d.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Minchan Kim \u003cminchan.kim@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": "c14f35c70e068392ccae0b2d6f755baea5eed4d6",
      "tree": "1e3265ba63a859ee0b45ae89303afea4de19012c",
      "parents": [
        "3403968d7a7dc373901cad0cad56b3afcb09cc50"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:23 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:24 2011 -0700"
      },
      "message": "memcg: remove impossible conditional when committing\n\nNo callsite ever passes a NULL pointer for a struct mem_cgroup * to the\ncommitting function.  There is no need to check for it.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Minchan Kim \u003cminchan.kim@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": "3403968d7a7dc373901cad0cad56b3afcb09cc50",
      "tree": "9c73d17914dab16fd90dcbae4bac303a98987da0",
      "parents": [
        "9d11ea9f163a14920487bdda77461e64d600fd48"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:22 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:24 2011 -0700"
      },
      "message": "memcg: remove unused page flag bitfield defines\n\nThese definitions have been unused since \u00274b3bde4 memcg: remove the\noverhead associated with the root cgroup\u0027.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Minchan Kim \u003cminchan.kim@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": "9d11ea9f163a14920487bdda77461e64d600fd48",
      "tree": "9435e30836ee97f3e8c235451bc944cdc8a345c4",
      "parents": [
        "b7c6167848fa36e32f1874b95c1edc02881cd040"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:21 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:23 2011 -0700"
      },
      "message": "memcg: simplify the way memory limits are checked\n\nSince transparent huge pages, checking whether memory cgroups are below\ntheir limits is no longer enough, but the actual amount of chargeable\nspace is important.\n\nTo not have more than one limit-checking interface, replace\nmemory_cgroup_check_under_limit() and memory_cgroup_check_margin() with a\nsingle memory_cgroup_margin() that returns the chargeable space and leaves\nthe comparison to the callsite.\n\nSoft limits are now checked the other way round, by using the already\nexisting function that returns the amount by which soft limits are\nexceeded: res_counter_soft_limit_excess().\n\nAlso remove all the corresponding functions on the res_counter side that\nare now no longer used.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Minchan Kim \u003cminchan.kim@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": "b7c6167848fa36e32f1874b95c1edc02881cd040",
      "tree": "d160acb871f2be4e0e7095c662b647e12a199dac",
      "parents": [
        "56039efa18f2530fc23e8ef19e716b65ee2a1d1e"
      ],
      "author": {
        "name": "Johannes Weiner",
        "email": "hannes@cmpxchg.org",
        "time": "Wed Mar 23 16:42:20 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:23 2011 -0700"
      },
      "message": "memcg: soft limit reclaim should end at limit not below\n\nSoft limit reclaim continues until the usage is below the current soft\nlimit, but the documented semantics are actually that soft limit reclaim\nwill push usage back until the soft limits are met again.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Minchan Kim \u003cminchan.kim@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": "56039efa18f2530fc23e8ef19e716b65ee2a1d1e",
      "tree": "a61cbd2f760e93363657622de2cd1591db028458",
      "parents": [
        "6c191cd01a935e5b53ef43c9403c771bb7a32b60"
      ],
      "author": {
        "name": "KAMEZAWA Hiroyuki",
        "email": "kamezawa.hiroyu@jp.fujitsu.com",
        "time": "Wed Mar 23 16:42:19 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 19:46:22 2011 -0700"
      },
      "message": "memcg: fix ugly initialization of return value is in caller\n\nRemove initialization of vaiable in caller of memory cgroup function.\nActually, it\u0027s return value of memcg function but it\u0027s initialized in\ncaller.\n\nSome memory cgroup uses following style to bring the result of start\nfunction to the end function for avoiding races.\n\n   mem_cgroup_start_A(\u0026(*ptr))\n   /* Something very complicated can happen here. */\n   mem_cgroup_end_A(*ptr)\n\nIn some calls, *ptr should be initialized to NULL be caller.  But it\u0027s\nugly.  This patch fixes that *ptr is initialized by _start function.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.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": "5ddd36b9c59887c6416e21daf984fbdd9b1818df",
      "tree": "1cc7ce9a671f4c49dc594e1f5d1fc8b596e77b5f",
      "parents": [
        "206cb636576b969e9b471cdedeaea7752e6acb33"
      ],
      "author": {
        "name": "Stephen Wilson",
        "email": "wilsons@start.ca",
        "time": "Sun Mar 13 15:49:20 2011 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Mar 23 16:36:57 2011 -0400"
      },
      "message": "mm: implement access_remote_vm\n\nProvide an alternative to access_process_vm that allows the caller to obtain a\nreference to the supplied mm_struct.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "206cb636576b969e9b471cdedeaea7752e6acb33",
      "tree": "252a1b5e9ce41521fb93b519265d4a1dbd18cfe9",
      "parents": [
        "e7f22e207bacdba5b73f2893a3abe935a5373e2e"
      ],
      "author": {
        "name": "Stephen Wilson",
        "email": "wilsons@start.ca",
        "time": "Sun Mar 13 15:49:19 2011 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Mar 23 16:36:56 2011 -0400"
      },
      "message": "mm: factor out main logic of access_process_vm\n\nIntroduce an internal helper __access_remote_vm and base access_process_vm on\ntop of it.  This new method may be called with a NULL task_struct if page fault\naccounting is not desired.  This code will be shared with a new address space\naccessor that is independent of task_struct.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "e7f22e207bacdba5b73f2893a3abe935a5373e2e",
      "tree": "02e9f01788742db409587475a0aa10f3a0347e38",
      "parents": [
        "cae5d39032acf26c265f6b1dc73d7ce6ff4bc387"
      ],
      "author": {
        "name": "Stephen Wilson",
        "email": "wilsons@start.ca",
        "time": "Sun Mar 13 15:49:18 2011 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Mar 23 16:36:56 2011 -0400"
      },
      "message": "mm: use mm_struct to resolve gate vma\u0027s in __get_user_pages\n\nWe now check if a requested user page overlaps a gate vma using the supplied mm\ninstead of the supplied task.  The given task is now used solely for accounting\npurposes and may be NULL.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "cae5d39032acf26c265f6b1dc73d7ce6ff4bc387",
      "tree": "9c89bcab3f4c17fb34eb44342d1f67bb4230d632",
      "parents": [
        "83b964bbf82eb13a8f31bb49ca420787fe01f7a6"
      ],
      "author": {
        "name": "Stephen Wilson",
        "email": "wilsons@start.ca",
        "time": "Sun Mar 13 15:49:17 2011 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Mar 23 16:36:55 2011 -0400"
      },
      "message": "mm: arch: rename in_gate_area_no_task to in_gate_area_no_mm\n\nNow that gate vma\u0027s are referenced with respect to a particular mm and not a\nparticular task it only makes sense to propagate the change to this predicate as\nwell.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nReviewed-by: Michel Lespinasse \u003cwalken@google.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "83b964bbf82eb13a8f31bb49ca420787fe01f7a6",
      "tree": "c94dcf5f4116ca351570fb9d2b7e37834e93f430",
      "parents": [
        "31db58b3ab432f72ea76be58b12e6ffaf627d5db"
      ],
      "author": {
        "name": "Stephen Wilson",
        "email": "wilsons@start.ca",
        "time": "Sun Mar 13 15:49:16 2011 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Mar 23 16:36:54 2011 -0400"
      },
      "message": "mm: arch: make in_gate_area take an mm_struct instead of a task_struct\n\nMorally, the question of whether an address lies in a gate vma should be asked\nwith respect to an mm, not a particular task.  Moreover, dropping the dependency\non task_struct will help make existing and future operations on mm\u0027s more\nflexible and convenient.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nReviewed-by: Michel Lespinasse \u003cwalken@google.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "31db58b3ab432f72ea76be58b12e6ffaf627d5db",
      "tree": "c88b742e1f2c52045d5abc6d35d7492ebdf64541",
      "parents": [
        "375906f8765e131a4a159b1ffebf78c15db7b3bf"
      ],
      "author": {
        "name": "Stephen Wilson",
        "email": "wilsons@start.ca",
        "time": "Sun Mar 13 15:49:15 2011 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Mar 23 16:36:54 2011 -0400"
      },
      "message": "mm: arch: make get_gate_vma take an mm_struct instead of a task_struct\n\nMorally, the presence of a gate vma is more an attribute of a particular mm than\na particular task.  Moreover, dropping the dependency on task_struct will help\nmake both existing and future operations on mm\u0027s more flexible and convenient.\n\nSigned-off-by: Stephen Wilson \u003cwilsons@start.ca\u003e\nReviewed-by: Michel Lespinasse \u003cwalken@google.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "2130781e2aaab66e5a9f2fdc8af35da0153f405c",
      "tree": "ccd654b948587a39b219f74e6cfd73ef6daa3658",
      "parents": [
        "04948c7f80b9446009c1c4791bb93e79729724fb"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 23:03:13 2011 -0300"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 23 07:54:22 2011 -0700"
      },
      "message": "sys_swapon: fix inode locking\n\nA conflict between 52c50567d8ab (\"mm: swap: unlock swapfile inode mutex\nbefore closing file on bad swapfiles\") and 83ef99befc32 (\"sys_swapon:\nremove did_down variable\") caused a double unlock of the inode mutex\n(once in bad_swap: before the filp_close, once at the end just before\nreturning).\n\nThe patch which added the extra unlock cleared did_down to avoid\nunlocking twice, but the other patch removed the did_down variable.\n\nTo fix, set inode to NULL after the first unlock, since it will be used\nafter that point only for the final unlock.\n\nWhile checking this patch, I found a path which could unlock without\nlocking, in case the same inode was added as a swapfile twice. To fix,\nmove the setting of the inode variable further down, to just before\nclaim_swapfile, which will lock the inode before doing anything else.\n\nCc: Mel Gorman \u003cmgorman@suse.de\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nCc: Eric B Munson \u003cemunson@mgebm.net\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "3dd7ae8ec0ef399bfea347f297d2a95504d35571",
      "tree": "6e049499c7502e55d45fbbf2ed83075ed2fbc481",
      "parents": [
        "bee4c36a5cf5c9f63ce1d7372aa62045fbd16d47"
      ],
      "author": {
        "name": "Shaohua Li",
        "email": "shaohua.li@intel.com",
        "time": "Tue Mar 22 16:33:45 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:09 2011 -0700"
      },
      "message": "mm: simplify code of swap.c\n\nClean up code and remove duplicate code. Next patch will use\npagevec_lru_move_fn introduced here too.\n\nSigned-off-by: Shaohua Li \u003cshaohua.li@intel.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Hiroyuki Kamezawa \u003ckamezawa.hiroyuki@gmail.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "bee4c36a5cf5c9f63ce1d7372aa62045fbd16d47",
      "tree": "d2c95aab9b12874d6675d529c3f8dd5cd2a35e10",
      "parents": [
        "8f7a66051b7523108c5aefb08c6a637e54aedc47"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hughd@google.com",
        "time": "Tue Mar 22 16:33:43 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:09 2011 -0700"
      },
      "message": "shmem: let shared anonymous be nonlinear again\n\nUp to 2.6.22, you could use remap_file_pages(2) on a tmpfs file or a\nshared mapping of /dev/zero or a shared anonymous mapping.  In 2.6.23 we\ndisabled it by default, but set VM_CAN_NONLINEAR to enable it on safe\nmappings.  We made sure to set it in shmem_mmap() for tmpfs files, but\nmissed it in shmem_zero_setup() for the others.  Fix that at last.\n\nReported-by: Kenny Simpson \u003ctheonetruekenny@yahoo.com\u003e\nSigned-off-by: Hugh Dickins \u003chughd@google.com\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": "8f7a66051b7523108c5aefb08c6a637e54aedc47",
      "tree": "212611c9ac7c4d9f0918e431043b3fc3f9fd43b6",
      "parents": [
        "84be48d84a53044e13aa8816aab201ab5480815d"
      ],
      "author": {
        "name": "Benjamin Herrenschmidt",
        "email": "benh@kernel.crashing.org",
        "time": "Tue Mar 22 16:33:43 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:09 2011 -0700"
      },
      "message": "mm/memblock: properly handle overlaps and fix error path\n\nCurrently memblock_reserve() or memblock_free() don\u0027t handle overlaps of\nany kind.  There is some special casing for coalescing exactly adjacent\nregions but that\u0027s about it.\n\nThis is annoying because typically memblock_reserve() is used to mark\nregions passed by the firmware as reserved and we all know how much we can\ntrust our firmwares...\n\nAlso, with the current code, if we do something it doesn\u0027t handle right\nsuch as trying to memblock_reserve() a large range spanning multiple\nexisting smaller reserved regions for example, or doing overlapping\nreservations, it can silently corrupt the internal region array, causing\nodd errors much later on, such as allocations returning reserved regions\netc...\n\nThis patch rewrites the underlying functions that add or remove a region\nto the arrays.  The new code is a lot more robust as it fully handles\noverlapping regions.  It\u0027s also, imho, simpler than the previous\nimplementation.\n\nIn addition, while doing so, I found a bug where if we fail to double the\narray while adding a region, we would remove the last region of the array\nrather than the region we just allocated.  This fixes it too.\n\nSigned-off-by: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nAcked-by: Yinghai Lu \u003cyinghai@kernel.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "84be48d84a53044e13aa8816aab201ab5480815d",
      "tree": "5b4208fee6bb357112e764e5f778adc8529d1b1b",
      "parents": [
        "a42931bf9c02fbf3628a27a2a5c55d2b83e4ff20"
      ],
      "author": {
        "name": "Kirill A. Shutemov",
        "email": "kirill@shutemov.name",
        "time": "Tue Mar 22 16:33:41 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:09 2011 -0700"
      },
      "message": "mm/page_alloc.c: use list_move() instead of list_del()/list_add() combination\n\nSigned-off-by: Kirill A. Shutemov \u003ckirill@shutemov.name\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nReviewed-by: Christoph Lameter \u003ccl@linux.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a42931bf9c02fbf3628a27a2a5c55d2b83e4ff20",
      "tree": "be75612386f472db6d70e7ecc105ee2246a4810a",
      "parents": [
        "cf15b07cf448e19dcb31a19f0cbaf898b08ce975"
      ],
      "author": {
        "name": "Namhyung Kim",
        "email": "namhyung@gmail.com",
        "time": "Tue Mar 22 16:33:41 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:09 2011 -0700"
      },
      "message": "vmalloc: remove confusing comment on vwrite()\n\nKM_USER1 is never used for vwrite() path so the caller doesn\u0027t need to\nguarantee it is not used.  Only the caller should guarantee is KM_USER0\nand it is commented already.\n\nSigned-off-by: Namhyung Kim \u003cnamhyung@gmail.com\u003e\nAcked-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": "cf15b07cf448e19dcb31a19f0cbaf898b08ce975",
      "tree": "78c377875ae4ee60181a205b6f01c4b52c49e03d",
      "parents": [
        "24b8ff7c27d9e975540656e377de44a2a181a01f"
      ],
      "author": {
        "name": "Jun\u0027ichi Nomura",
        "email": "j-nomura@ce.jp.nec.com",
        "time": "Tue Mar 22 16:33:40 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:09 2011 -0700"
      },
      "message": "writeback: make mapping-\u003ewriteback_index to point to the last written page\n\nFor range-cyclic writeback (e.g.  kupdate), the writeback code sets a\ncontinuation point of the next writeback to mapping-\u003ewriteback_index which\nis set the page after the last written page.  This happens so that we\nevenly write the whole file even if pages in it get continuously\nredirtied.\n\nHowever, in some cases, sequential writer is writing in the middle of the\npage and it just redirties the last written page by continuing from that.\nFor example with an application which uses a file as a big ring buffer we\nsee:\n\n[1st writeback session]\n       ...\n       flush-8:0-2743  4571: block_bio_queue: 8,0 W 94898514 + 8\n       flush-8:0-2743  4571: block_bio_queue: 8,0 W 94898522 + 8\n       flush-8:0-2743  4571: block_bio_queue: 8,0 W 94898530 + 8\n       flush-8:0-2743  4571: block_bio_queue: 8,0 W 94898538 + 8\n       flush-8:0-2743  4571: block_bio_queue: 8,0 W 94898546 + 8\n     kworker/0:1-11    4571: block_rq_issue: 8,0 W 0 () 94898514 + 40\n\u003e\u003e     flush-8:0-2743  4571: block_bio_queue: 8,0 W 94898554 + 8\n\u003e\u003e     flush-8:0-2743  4571: block_rq_issue: 8,0 W 0 () 94898554 + 8\n\n[2nd writeback session after 35sec]\n       flush-8:0-2743  4606: block_bio_queue: 8,0 W 94898562 + 8\n       flush-8:0-2743  4606: block_bio_queue: 8,0 W 94898570 + 8\n       flush-8:0-2743  4606: block_bio_queue: 8,0 W 94898578 + 8\n       ...\n     kworker/0:1-11    4606: block_rq_issue: 8,0 W 0 () 94898562 + 640\n     kworker/0:1-11    4606: block_rq_issue: 8,0 W 0 () 94899202 + 72\n       ...\n       flush-8:0-2743  4606: block_bio_queue: 8,0 W 94899962 + 8\n       flush-8:0-2743  4606: block_bio_queue: 8,0 W 94899970 + 8\n       flush-8:0-2743  4606: block_bio_queue: 8,0 W 94899978 + 8\n       flush-8:0-2743  4606: block_bio_queue: 8,0 W 94899986 + 8\n       flush-8:0-2743  4606: block_bio_queue: 8,0 W 94899994 + 8\n     kworker/0:1-11    4606: block_rq_issue: 8,0 W 0 () 94899962 + 40\n\u003e\u003e     flush-8:0-2743  4606: block_bio_queue: 8,0 W 94898554 + 8\n\u003e\u003e     flush-8:0-2743  4606: block_rq_issue: 8,0 W 0 () 94898554 + 8\n\nSo we seeked back to 94898554 after we wrote all the pages at the end of\nthe file.\n\nThis extra seek seems unnecessary.  If we continue writeback from the last\nwritten page, we can avoid it and do not cause harm to other cases.  The\noriginal intent of even writeout over the whole file is preserved and if\nthe page does not get redirtied pagevec_lookup_tag() just skips it.\n\nAs an exceptional case, when I/O error happens, set done_index to the next\npage as the comment in the code suggests.\n\nTested-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nSigned-off-by: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "24b8ff7c27d9e975540656e377de44a2a181a01f",
      "tree": "cab32a01878ce32b46f41b71317421e894f183ea",
      "parents": [
        "40531542e2832419566c997af0808513f6f2815d"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:38 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:09 2011 -0700"
      },
      "message": "mm: remove inline from scan_swap_map()\n\nscan_swap_map() is a large function (224 lines), with several loops and a\ncomplex control flow involving several gotos.\n\nGiven all that, it is a bit silly that it is marked as inline.  The\ncompiler agrees with me: on a x86-64 compile, it did not inline the\nfunction.\n\nRemove the \"inline\" and let the compiler decide instead.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@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": "40531542e2832419566c997af0808513f6f2815d",
      "tree": "06e0bb32e53447f58a1821af1c4e960edbd97b0d",
      "parents": [
        "c6a2b64ba5d09a1e281e85988ffd650655fa0f39"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:37 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:08 2011 -0700"
      },
      "message": "sys_swapon: separate final enabling of the swapfile\n\nThe block in sys_swapon which does the final adjustments to the\nswap_info_struct and to swap_list is the same as the block which\nre-inserts it again at sys_swapoff on failure of try_to_unuse(). Move\nthis code to a separate function, and use it both in sys_swapon and\nsys_swapoff.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c6a2b64ba5d09a1e281e85988ffd650655fa0f39",
      "tree": "5d3787b45e2e4ad7377c47cd601a1fcb1fec0bde",
      "parents": [
        "c69dbfb84e88503468b6c481aecdb48d76ad5bc6"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:36 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:08 2011 -0700"
      },
      "message": "sys_swapoff: change order to match sys_swapon\n\nThe block in sys_swapon which does the final adjustments to the\nswap_info_struct and to swap_list is the same as the block which\nre-inserts it again at sys_swapoff on failure of try_to_unuse(), except\nfor the order of the operations within the lock. Since the order should\nnot matter, arbitrarily change sys_swapoff to match sys_swapon, in\npreparation to making both share the same code.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c69dbfb84e88503468b6c481aecdb48d76ad5bc6",
      "tree": "ade74b75b80a0481ae6309c9cb0bc7298db13ad7",
      "parents": [
        "9c8100ef26ba9012b8677a383179a0cf169fc7f3"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:35 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:08 2011 -0700"
      },
      "message": "sys_swapon: move printk outside lock\n\nThe block in sys_swapon which does the final adjustments to the\nswap_info_struct and to swap_list is the same as the block which\nre-inserts it again at sys_swapoff on failure of try_to_unuse(). To be\nable to make both share the same code, move the printk() call in the\nmiddle of it to just after it.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "9c8100ef26ba9012b8677a383179a0cf169fc7f3",
      "tree": "6ff570c8373dbb90b47345b2adc0b0c9c9b11001",
      "parents": [
        "bdb8e3f68320f897de3f3a4c363fe2802037f21d"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:34 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:08 2011 -0700"
      },
      "message": "sys_swapon: remove nr_good_pages variable\n\nIt still exists within setup_swap_map_and_extents(), but after it\nnr_good_pages \u003d\u003d p-\u003epages.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "bdb8e3f68320f897de3f3a4c363fe2802037f21d",
      "tree": "0eeb4907e05daa418ec8e98c2492b4177ab67e3c",
      "parents": [
        "915d4d7bc0d719f2f0907273c01967d38751c625"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:33 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:08 2011 -0700"
      },
      "message": "sys_swapon: simplify error flow in setup_swap_map_and_extents()\n\nSince there is no cleanup to do, there is no reason to jump to a label.\nReturn directly instead.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "915d4d7bc0d719f2f0907273c01967d38751c625",
      "tree": "deeab9a10407fa37dedb24d1adc5a83626f740f6",
      "parents": [
        "1421ef3cd15b87ef949e965efeb1e527479d3f75"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:32 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:08 2011 -0700"
      },
      "message": "sys_swapon: separate parsing of bad blocks and extents\n\nMove the code which parses the bad block list and the extents to a\nseparate function. Only code movement, no functional changes.\n\nThis change uses the fact that, after the success path, nr_good_pages \u003d\u003d\np-\u003epages.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "1421ef3cd15b87ef949e965efeb1e527479d3f75",
      "tree": "8bcc6d1047905b205a7061c00bda40197fad2328",
      "parents": [
        "38719025384cf7121331bd6d41c062d3c5f7bb91"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:31 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:08 2011 -0700"
      },
      "message": "sys_swapon: call swap_cgroup_swapon() earlier\n\nThe call to swap_cgroup_swapon is in the middle of loading the swap map\nand extents. As it only does memory allocation and does not depend on\nthe swapfile layout (map/extents), it can be called earlier (or later).\n\nMove it to just after the allocation of swap_map, since it is\nconceptually similar (allocates a map).\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "38719025384cf7121331bd6d41c062d3c5f7bb91",
      "tree": "8848283db6cd61b426491f17de38d9bc15697514",
      "parents": [
        "ca8bd38bf6f05481c4155fc444178151884f65d0"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:30 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:08 2011 -0700"
      },
      "message": "sys_swapon: simplify error flow in read_swap_header()\n\nSince there is no cleanup to do, there is no reason to jump to a label.\nReturn directly instead.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ca8bd38bf6f05481c4155fc444178151884f65d0",
      "tree": "efb917f23834153878a8f9f4c5f784e9cb900f66",
      "parents": [
        "5de771e41f0fc2243c39585357b73f0ff757b280"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:29 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:07 2011 -0700"
      },
      "message": "sys_swapon: separate parsing of swapfile header\n\nMove the code which parses and checks the swapfile header (except for\nthe bad block list) to a separate function. Only code movement, no\nfunctional changes.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "5de771e41f0fc2243c39585357b73f0ff757b280",
      "tree": "a807bb46f4334b6697c0dba7dc80075e8dccae5f",
      "parents": [
        "87ade72a799a9a895b4a60918c32b43d3dfc3324"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:28 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:07 2011 -0700"
      },
      "message": "sys_swapon: move setting of swapfilepages near use\n\nThere is no reason I can see to read inode-\u003ei_size long before it is\nneeded. Move its read to just before it is needed, to reduce the\nvariable lifetime.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Jesper Juhl \u003cjj@chaosbits.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "87ade72a799a9a895b4a60918c32b43d3dfc3324",
      "tree": "3110f7526fc3581962232b39567fee2fb95c44aa",
      "parents": [
        "4d0e1e10752ca487d83d1ab2a1d4ae6d664e1cc0"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:27 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:07 2011 -0700"
      },
      "message": "sys_swapon: simplify error flow in claim_swapfile()\n\nSince there is no cleanup to do, there is no reason to jump to a label.\nReturn directly instead.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "4d0e1e10752ca487d83d1ab2a1d4ae6d664e1cc0",
      "tree": "57f0c09fd4e61a02e4ad5cd86b1dbda7029b2806",
      "parents": [
        "bd69010b042a60ca41a890df1b10019e94746c2f"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:26 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:07 2011 -0700"
      },
      "message": "sys_swapon: separate bdev claim and inode lock\n\nMove the code which claims the bdev (S_ISBLK) or locks the inode\n(S_ISREG) to a separate function. Only code movement, no functional\nchanges.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "bd69010b042a60ca41a890df1b10019e94746c2f",
      "tree": "4064703903170911b09919f89b74a5bbe0d5ebfe",
      "parents": [
        "9b01c350af4fb00fe2ab66ff9bf16058c50b69bd"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:25 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:07 2011 -0700"
      },
      "message": "sys_swapon: use a single error label\n\nsys_swapon currently has two error labels, bad_swap and bad_swap_2.\nbad_swap does the same as bad_swap_2 plus destroy_swap_extents() and\nswap_cgroup_swapoff(); both are noops in the places where bad_swap_2 is\njumped to. With a single extra test for inode (matching the one in the\nS_ISREG case below), all the error paths in the function can go to\nbad_swap.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "9b01c350af4fb00fe2ab66ff9bf16058c50b69bd",
      "tree": "246a4e93384acaca2ae91826448bfed5da08cb07",
      "parents": [
        "f2090d2df51d7cdb2f952dcfdcd8baaac0aec444"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:24 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:07 2011 -0700"
      },
      "message": "sys_swapon: do only cleanup in the cleanup blocks\n\nThe only way error is 0 in the cleanup blocks is when the function is\nreturning successfully. In this case, the cleanup blocks were setting\nS_SWAPFILE in the S_ISREG case. But this is not a cleanup.\n\nMove the setting of S_SWAPFILE to just before the \"goto out;\" to make\nthis more clear. At this point, we do not need to test for inode because\nit will never be NULL.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f2090d2df51d7cdb2f952dcfdcd8baaac0aec444",
      "tree": "474daba281f890d44ee22b23137d99cb5021f381",
      "parents": [
        "7de7fb6b3422e6d1dac00666a992834085e745dc"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:23 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:07 2011 -0700"
      },
      "message": "sys_swapon: remove bdev variable\n\nThe bdev variable is always equivalent to (S_ISBLK(inode-\u003ei_mode) ?\np-\u003ebdev : NULL), as long as it being set is moved to a bit earlier. Use\nthis fact to remove the bdev variable.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7de7fb6b3422e6d1dac00666a992834085e745dc",
      "tree": "4dd93f9871c1ff05212652a1e4709414a4881f1d",
      "parents": [
        "83ef99befc324803a54cf2a5fab5a322df3a99d6"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:22 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:07 2011 -0700"
      },
      "message": "sys_swapon: move setting of error nearer use\n\nMove the setting of the error variable nearer the goto in a few places.\n\nAvoids calling PTR_ERR() if not IS_ERR() in two places, and makes the\nerror condition more explicit in two other places.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Jesper Juhl \u003cjj@chaosbits.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "83ef99befc324803a54cf2a5fab5a322df3a99d6",
      "tree": "d56035f4683a387ac8bf0d37b21b15f7d04de672",
      "parents": [
        "28b36bd741bd44db30e12b1048a659aa346e9b76"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:21 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:07 2011 -0700"
      },
      "message": "sys_swapon: remove did_down variable\n\nSince mutex_lock(\u0026inode-\u003ei_mutex) is called just after setting inode,\ndid_down is always equivalent to (inode \u0026\u0026 S_ISREG(inode-\u003ei_mode)).\n\nUse this fact to remove the did_down variable.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "28b36bd741bd44db30e12b1048a659aa346e9b76",
      "tree": "7843ec3dd5f4db132c4808b08daf98d795074dea",
      "parents": [
        "730c0581c82dbc5be2f41a2d85bde6bad11bc8a4"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:20 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:07 2011 -0700"
      },
      "message": "sys_swapon: remove initial value of name variable\n\nNow there is nothing which jumps to the cleanup blocks before the name\nvariable is set. There is no need to set it initially to NULL anymore.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "730c0581c82dbc5be2f41a2d85bde6bad11bc8a4",
      "tree": "de06f9f0e12ec8fe963a0bca3835ef0a72dd9191",
      "parents": [
        "2542e5134d2c19a9e6a4e641ef78cac6bccebd9b"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:19 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:06 2011 -0700"
      },
      "message": "sys_swapon: simplify error flow in alloc_swap_info()\n\nSince there is no cleanup to do, there is no reason to jump to a label.\nReturn directly instead.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2542e5134d2c19a9e6a4e641ef78cac6bccebd9b",
      "tree": "bcab086064e082d2b2275766327bb5518b81318f",
      "parents": [
        "53cbb2435f161f2a8b36af8f6d2c46dc59d0d757"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:18 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:06 2011 -0700"
      },
      "message": "sys_swapon: simplify error return from swap_info allocation\n\nAt this point in sys_swapon, there is nothing to free. Return directly\ninstead of jumping to the cleanup block at the end of the function.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "53cbb2435f161f2a8b36af8f6d2c46dc59d0d757",
      "tree": "e32652c07e3a65bbe29d04df8daf3cc753945c51",
      "parents": [
        "e8e6c2ec403ecfaa226857d8204344c98fe12b7b"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:17 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:06 2011 -0700"
      },
      "message": "sys_swapon: separate swap_info allocation\n\nMove the swap_info allocation to its own function. Only code movement,\nno functional changes.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e8e6c2ec403ecfaa226857d8204344c98fe12b7b",
      "tree": "93a3cdaf385c72ba1f98add399b34ba65608efff",
      "parents": [
        "80b0df12b808bf8e8391afae1b43f5e529f76d89"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:16 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:06 2011 -0700"
      },
      "message": "sys_swapon: do not depend on \"type\" after allocation\n\nWithin sys_swapon, after the swap_info entry has been allocated, we\nalways have type \u003d\u003d p-\u003etype and swap_info[type] \u003d\u003d p. Use this fact to\nreduce the dependency on the \"type\" local variable within the function,\nas a preparation to move the allocation of the swap_info entry to a\nseparate function.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujisu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "80b0df12b808bf8e8391afae1b43f5e529f76d89",
      "tree": "1d71923d9e693f3dfb9dbc28b3ddcec80e6b2eff",
      "parents": [
        "803d0c8351b47b72b8b018457a33b342557b90a2"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:15 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:05 2011 -0700"
      },
      "message": "sys_swapon: remove changelog from function comment\n\nChangelogs belong in the git history instead of in the source code.\n\nAlso, \"The swapon system call\" is redundant with\n\"SYSCALL_DEFINE2(swapon, ...)\".\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: Jesper Juhl \u003cjj@chaosbits.net\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\n[ Gaah. That\u0027s a _historical_ comment. But the patch-series depends on removal ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "803d0c8351b47b72b8b018457a33b342557b90a2",
      "tree": "feb660ed5b7b6fd3dfba9ec3e6f121c777ba6252",
      "parents": [
        "cc5d462f7777c06c5cf0b55d736be325cda747b3"
      ],
      "author": {
        "name": "Cesar Eduardo Barros",
        "email": "cesarb@cesarb.net",
        "time": "Tue Mar 22 16:33:14 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:05 2011 -0700"
      },
      "message": "sys_swapon: use vzalloc() instead of vmalloc/memset\n\nThis patch series refactors the sys_swapon function.\n\nsys_swapon is currently a very large function, with 313 lines (more than\n12 25-line screens), which can make it a bit hard to read. This patch\nseries reduces this size by half, by extracting large chunks of related\ncode to new helper functions.\n\nOne of these chunks of code was nearly identical to the part of\nsys_swapoff which is used in case of a failure return from\ntry_to_unuse(), so this patch series also makes both share the same\ncode.\n\nAs a side effect of all this refactoring, the compiled code gets a bit\nsmaller (from v1 of this patch series):\n\n   text       data        bss        dec        hex    filename\n  14012        944        276      15232       3b80    mm/swapfile.o.before\n  13941        944        276      15161       3b39    mm/swapfile.o.after\n\nThis patch:\n\nUse vzalloc() instead of vmalloc/memset.\n\nSigned-off-by: Cesar Eduardo Barros \u003ccesarb@cesarb.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nReviewed-by: Pekka Enberg \u003cpenberg@kernel.org\u003e\nReviewed-by: Jesper Juhl \u003cjj@chaosbits.net\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "cc5d462f7777c06c5cf0b55d736be325cda747b3",
      "tree": "3b0fc1539e85c0357ab0ae8a718b69b39377ede5",
      "parents": [
        "78afd5612deb8268bafc8b6507d72341d5ed9aac"
      ],
      "author": {
        "name": "Andi Kleen",
        "email": "ak@linux.intel.com",
        "time": "Tue Mar 22 16:33:13 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:05 2011 -0700"
      },
      "message": "mm: use __GFP_OTHER_NODE for transparent huge pages\n\nPass __GFP_OTHER_NODE for transparent hugepages NUMA allocations done by the\nhugepages daemon.  This way the low level accounting for local versus\nremote pages works correctly.\n\nContains improvements from Andrea Arcangeli\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Andi Kleen \u003cak@linux.intel.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "78afd5612deb8268bafc8b6507d72341d5ed9aac",
      "tree": "b96131d6f237b9ce6848d95c8eccdd1f7855365c",
      "parents": [
        "11bc82d67d1150767901bca54a24466621d763d7"
      ],
      "author": {
        "name": "Andi Kleen",
        "email": "ak@linux.intel.com",
        "time": "Tue Mar 22 16:33:12 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:05 2011 -0700"
      },
      "message": "mm: add __GFP_OTHER_NODE flag\n\nAdd a new __GFP_OTHER_NODE flag to tell the low level numa statistics in\nzone_statistics() that an allocation is on behalf of another thread.  This\nway the local and remote counters can be still correct, even when\nbackground daemons like khugepaged are changing memory mappings.\n\nThis only affects the accounting, but I think it\u0027s worth doing that right\nto avoid confusing users.\n\nI first tried to just pass down the right node, but this required a lot of\nchanges to pass down this parameter and at least one addition of a 10th\nargument to a 9 argument function.  Using the flag is a lot less\nintrusive.\n\nOpen: should be also used for migration?\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Andi Kleen \u003cak@linux.intel.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "11bc82d67d1150767901bca54a24466621d763d7",
      "tree": "119442c599a82b35c553c6f54626c870e885ee50",
      "parents": [
        "b2eef8c0d09101bbbff2531c097543aedde0b525"
      ],
      "author": {
        "name": "Andrea Arcangeli",
        "email": "aarcange@redhat.com",
        "time": "Tue Mar 22 16:33:11 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:05 2011 -0700"
      },
      "message": "mm: compaction: Use async migration for __GFP_NO_KSWAPD and enforce no writeback\n\n__GFP_NO_KSWAPD allocations are usually very expensive and not mandatory\nto succeed as they have graceful fallback.  Waiting for I/O in those,\ntends to be overkill in terms of latencies, so we can reduce their latency\nby disabling sync migrate.\n\nUnfortunately, even with async migration it\u0027s still possible for the\nprocess to be blocked waiting for a request slot (e.g.  get_request_wait\nin the block layer) when -\u003ewritepage is called.  To prevent\n__GFP_NO_KSWAPD blocking, this patch prevents -\u003ewritepage being called on\ndirty page cache for asynchronous migration.\n\nAddresses https://bugzilla.kernel.org/show_bug.cgi?id\u003d31142\n\n[mel@csn.ul.ie: Avoid writebacks for NFS, retry locked pages, use bool]\nSigned-off-by: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Arthur Marsh \u003carthur.marsh@internode.on.net\u003e\nCc: Clemens Ladisch \u003ccladisch@googlemail.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nReported-by: Alex Villacis Lasso \u003cavillaci@ceibo.fiec.espol.edu.ec\u003e\nTested-by: Alex Villacis Lasso \u003cavillaci@ceibo.fiec.espol.edu.ec\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b2eef8c0d09101bbbff2531c097543aedde0b525",
      "tree": "ba0cbc88a8f66dc53c915509d90b3c4eeae8e7f1",
      "parents": [
        "602605a42ea4c299aeed4d806c49fb9dd18cd204"
      ],
      "author": {
        "name": "Andrea Arcangeli",
        "email": "aarcange@redhat.com",
        "time": "Tue Mar 22 16:33:10 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:05 2011 -0700"
      },
      "message": "mm: compaction: minimise the time IRQs are disabled while isolating pages for migration\n\ncompaction_alloc() isolates pages for migration in isolate_migratepages.\nWhile it\u0027s scanning, IRQs are disabled on the mistaken assumption the\nscanning should be short.  Tests show this to be true for the most part\nbut contention times on the LRU lock can be increased.  Before this patch,\nthe IRQ disabled times for a simple test looked like\n\n  Total sampled time IRQs off (not real total time): 5493\n  Event shrink_inactive_list..shrink_zone                  1596 us count 1\n  Event shrink_inactive_list..shrink_zone                  1530 us count 1\n  Event shrink_inactive_list..shrink_zone                   956 us count 1\n  Event shrink_inactive_list..shrink_zone                   541 us count 1\n  Event shrink_inactive_list..shrink_zone                   531 us count 1\n  Event split_huge_page..add_to_swap                        232 us count 1\n  Event save_args..call_softirq                              36 us count 1\n  Event save_args..call_softirq                              35 us count 2\n  Event __wake_up..__wake_up                                  1 us count 1\n\nThis patch reduces the worst-case IRQs-disabled latencies by releasing the\nlock every SWAP_CLUSTER_MAX pages that are scanned and releasing the CPU if\nnecessary. The cost of this is that the processing performing compaction will\nbe slower but IRQs being disabled for too long a time has worse consequences\nas the following report shows;\n\n  Total sampled time IRQs off (not real total time): 4367\n  Event shrink_inactive_list..shrink_zone                   881 us count 1\n  Event shrink_inactive_list..shrink_zone                   875 us count 1\n  Event shrink_inactive_list..shrink_zone                   868 us count 1\n  Event shrink_inactive_list..shrink_zone                   555 us count 1\n  Event split_huge_page..add_to_swap                        495 us count 1\n  Event compact_zone..compact_zone_order                    269 us count 1\n  Event split_huge_page..add_to_swap                        266 us count 1\n  Event shrink_inactive_list..shrink_zone                    85 us count 1\n  Event save_args..call_softirq                              36 us count 2\n  Event __wake_up..__wake_up                                  1 us count 1\n\n[akpm@linux-foundation.org: simplify with s/unlocked/locked/]\nSigned-off-by: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Arthur Marsh \u003carthur.marsh@internode.on.net\u003e\nCc: Clemens Ladisch \u003ccladisch@googlemail.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Minchan Kim \u003cminchan.kim@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": "602605a42ea4c299aeed4d806c49fb9dd18cd204",
      "tree": "55e98c0f8d1418248ec06b9f059d2713422e596a",
      "parents": [
        "5b280c0cc70062967bb9d630b216375b18db3a0b"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Tue Mar 22 16:33:08 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:05 2011 -0700"
      },
      "message": "mm: compaction: minimise the time IRQs are disabled while isolating free pages\n\ncompaction_alloc() isolates free pages to be used as migration targets.\nWhile its scanning, IRQs are disabled on the mistaken assumption the\nscanning should be short.  Analysis showed that IRQs were in fact being\ndisabled for substantial time.  A simple test was run using large\nanonymous mappings with transparent hugepage support enabled to trigger\nfrequent compactions.  A monitor sampled what the worst IRQ-off latencies\nwere and a post-processing tool found the following;\n\n  Total sampled time IRQs off (not real total time): 22355\n  Event compaction_alloc..compaction_alloc                 8409 us count 1\n  Event compaction_alloc..compaction_alloc                 7341 us count 1\n  Event compaction_alloc..compaction_alloc                 2463 us count 1\n  Event compaction_alloc..compaction_alloc                 2054 us count 1\n  Event shrink_inactive_list..shrink_zone                  1864 us count 1\n  Event shrink_inactive_list..shrink_zone                    88 us count 1\n  Event save_args..call_softirq                              36 us count 1\n  Event save_args..call_softirq                              35 us count 2\n  Event __make_request..__blk_run_queue                      24 us count 1\n  Event __alloc_pages_nodemask..__alloc_pages_nodemask        6 us count 1\n\ni.e.  compaction is disabled IRQs for a prolonged period of time - 8ms in\none instance.  The full report generated by the tool can be found at\n\n http://www.csn.ul.ie/~mel/postings/minfree-20110225/irqsoff-vanilla-micro.report\n\nThis patch reduces the time IRQs are disabled by simply disabling IRQs at\nthe last possible minute.  An updated IRQs-off summary report then looks\nlike;\n\n  Total sampled time IRQs off (not real total time): 5493\n  Event shrink_inactive_list..shrink_zone                  1596 us count 1\n  Event shrink_inactive_list..shrink_zone                  1530 us count 1\n  Event shrink_inactive_list..shrink_zone                   956 us count 1\n  Event shrink_inactive_list..shrink_zone                   541 us count 1\n  Event shrink_inactive_list..shrink_zone                   531 us count 1\n  Event split_huge_page..add_to_swap                        232 us count 1\n  Event save_args..call_softirq                              36 us count 1\n  Event save_args..call_softirq                              35 us count 2\n  Event __wake_up..__wake_up                                  1 us count 1\n\nA full report is again available at\n\n  http://www.csn.ul.ie/~mel/postings/minfree-20110225/irqsoff-minimiseirq-free-v1r4-micro.report\n\nAs should be obvious, IRQ disabled latencies due to compaction are\nalmost elimimnated for this particular test.\n\n[aarcange@redhat.com: Fix initialisation of isolated]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujisu.com\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nAcked-by: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: Arthur Marsh \u003carthur.marsh@internode.on.net\u003e\nCc: Clemens Ladisch \u003ccladisch@googlemail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "5b280c0cc70062967bb9d630b216375b18db3a0b",
      "tree": "6242d234d08fdd433b99c425e25f6562cd51cd0f",
      "parents": [
        "9d8aa4ea855e0d64bb6926acb5618e6d1e2ed344"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hughd@google.com",
        "time": "Tue Mar 22 16:33:07 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:04 2011 -0700"
      },
      "message": "mm: don\u0027t return 0 too early from find_get_pages()\n\nCallers of find_get_pages(), or its wrapper pagevec_lookup() - notably\ntruncate_inode_pages_range() - stop looking further when it returns 0.\n\nBut if an interrupt comes just after its radix_tree_gang_lookup_slot(),\nespecially if we have preemptible RCU enabled, isn\u0027t it conceivable that\nall 14 pages returned could be removed from the page cache by\nshrink_page_list(), before find_get_pages() gets to process them?  So\ncausing it to return 0 although there may be plenty more pages beyond.\n\nMake find_get_pages() and find_get_pages_tag() check for this unlikely\ncase, and restart should it occur; but callers of find_get_pages_contig()\nhave no such expectation, it\u0027s okay for that to return 0 early.\n\nI have not seen this in practice, just worried by the possibility.\n\nSigned-off-by: Hugh Dickins \u003chughd@google.com\u003e\nCc: Nick Piggin \u003cnpiggin@kernel.dk\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: Salman Qazi \u003csqazi@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "9d8aa4ea855e0d64bb6926acb5618e6d1e2ed344",
      "tree": "a21357f21084169e0a322f8fa8ce8abe343d4f06",
      "parents": [
        "c033a93c0d961fc7ec5b0872649143e061d97dd4"
      ],
      "author": {
        "name": "Hugh Dickins",
        "email": "hughd@google.com",
        "time": "Tue Mar 22 16:33:06 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:04 2011 -0700"
      },
      "message": "mm: remove worrying dead code from find_get_pages()\n\nThe radix_tree_deref_retry() case in find_get_pages() has a strange little\nexcrescence, not seen in the other gang lookups: it looks like the start\nof an abandoned attempt to guarantee forward progress in a case that\ncannot arise.\n\nret should always be 0 here: if it isn\u0027t, then going back to restart will\nleak references to pages already gotten.  There used to be a comment\nsaying nr_found is necessarily 1 here: that\u0027s not quite true, but the\nradix_tree_deref_retry() case is peculiar to the entry at index 0, when we\nrace with it being moved out of the radix_tree root or back.\n\nRemove the worrisome two lines, add a brief comment here and in\nfind_get_pages_contig() and find_get_pages_tag(), and a WARN_ON in\nfind_get_pages() should it ever be seen elsewhere than at 0.\n\nSigned-off-by: Hugh Dickins \u003chughd@google.com\u003e\nCc: Nick Piggin \u003cnpiggin@kernel.dk\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: Salman Qazi \u003csqazi@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c033a93c0d961fc7ec5b0872649143e061d97dd4",
      "tree": "06d037d837bb493b08e306a605b393c9f67d175f",
      "parents": [
        "8afdcece4911e51cfff2b50a269418914cab8a3f"
      ],
      "author": {
        "name": "Petr Holasek",
        "email": "pholasek@redhat.com",
        "time": "Tue Mar 22 16:33:05 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:04 2011 -0700"
      },
      "message": "hugetlbfs: correct handling of negative input to /proc/sys/vm/nr_hugepages\n\nWhen the user inserts a negative value into /proc/sys/vm/nr_hugepages it\nwill cause the kernel to allocate as many hugepages as possible and to\nthen update /proc/meminfo to reflect this.\n\nThis changes the behavior so that the negative input will result in\nnr_hugepages value being unchanged.\n\nSigned-off-by: Petr Holasek \u003cpholasek@redhat.com\u003e\nSigned-off-by: Anton Arapov \u003canton@redhat.com\u003e\nReviewed-by: Naoya Horiguchi \u003cn-horiguchi@ah.jp.nec.com\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "8afdcece4911e51cfff2b50a269418914cab8a3f",
      "tree": "fcfb966822f0f6c128c754f3876a80106c9cc654",
      "parents": [
        "7571966189e54adf0a8bc1384d6f13f44052ba63"
      ],
      "author": {
        "name": "Mel Gorman",
        "email": "mel@csn.ul.ie",
        "time": "Tue Mar 22 16:33:04 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:04 2011 -0700"
      },
      "message": "mm: vmscan: kswapd should not free an excessive number of pages when balancing small zones\n\nWhen reclaiming for order-0 pages, kswapd requires that all zones be\nbalanced.  Each cycle through balance_pgdat() does background ageing on\nall zones if necessary and applies equal pressure on the inactive zone\nunless a lot of pages are free already.\n\nA \"lot of free pages\" is defined as a \"balance gap\" above the high\nwatermark which is currently 7*high_watermark.  Historically this was\nreasonable as min_free_kbytes was small.  However, on systems using huge\npages, it is recommended that min_free_kbytes is higher and it is tuned\nwith hugeadm --set-recommended-min_free_kbytes.  With the introduction of\ntransparent huge page support, this recommended value is also applied.  On\nX86-64 with 4G of memory, min_free_kbytes becomes 67584 so one would\nexpect around 68M of memory to be free.  The Normal zone is approximately\n35000 pages so under even normal memory pressure such as copying a large\nfile, it gets exhausted quickly.  As it is getting exhausted, kswapd\napplies pressure equally to all zones, including the DMA32 zone.  DMA32 is\napproximately 700,000 pages with a high watermark of around 23,000 pages.\nIn this situation, kswapd will reclaim around (23000*8 where 8 is the high\nwatermark + balance gap of 7 * high watermark) pages or 718M of pages\nbefore the zone is ignored.  What the user sees is that free memory far\nhigher than it should be.\n\nTo avoid an excessive number of pages being reclaimed from the larger\nzones, explicitely defines the \"balance gap\" to be either 1% of the zone\nor the low watermark for the zone, whichever is smaller.  While kswapd\nwill check all zones to apply pressure, it\u0027ll ignore zones that meets the\n(high_wmark + balance_gap) watermark.\n\nTo test this, 80G were copied from a partition and the amount of memory\nbeing used was recorded.  A comparison of a patch and unpatched kernel can\nbe seen at\nhttp://www.csn.ul.ie/~mel/postings/minfree-20110222/memory-usage-hydra.ps\nand shows that kswapd is not reclaiming as much memory with the patch\napplied.\n\nSigned-off-by: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nCc: Shaohua Li \u003cshaohua.li@intel.com\u003e\nCc: \"Chen, Tim C\" \u003ctim.c.chen@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7571966189e54adf0a8bc1384d6f13f44052ba63",
      "tree": "51f421e135905399751eaf78b19cd184dddf9387",
      "parents": [
        "4031a219d8913da40ade5a6e5b538cc61e975cc8"
      ],
      "author": {
        "name": "Namhyung Kim",
        "email": "namhyung@gmail.com",
        "time": "Tue Mar 22 16:33:02 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:04 2011 -0700"
      },
      "message": "mempolicy: remove redundant check in __mpol_equal()\n\nThe \u0027flags\u0027 field is already checked, no need to do it again.\n\nSigned-off-by: Namhyung Kim \u003cnamhyung@gmail.com\u003e\nCc: Bob Liu \u003clliubbo@gmail.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nReviewed-by: Minchan Kim \u003cminchan.kim@gmail.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": "033193275b3ffcfe7f3fde7b569f3d207f6cd6a0",
      "tree": "fc65fa02248f855f0f63e087f35a507b6abb5617",
      "parents": [
        "278df9f451dc71dcd002246be48358a473504ad0"
      ],
      "author": {
        "name": "Dave Hansen",
        "email": "dave@linux.vnet.ibm.com",
        "time": "Tue Mar 22 16:32:56 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:04 2011 -0700"
      },
      "message": "pagewalk: only split huge pages when necessary\n\nRight now, if a mm_walk has either -\u003epte_entry or -\u003epmd_entry set, it will\nunconditionally split any transparent huge pages it runs in to.  In\npractice, that means that anyone doing a\n\n\tcat /proc/$pid/smaps\n\nwill unconditionally break down every huge page in the process and depend\non khugepaged to re-collapse it later.  This is fairly suboptimal.\n\nThis patch changes that behavior.  It teaches each -\u003epmd_entry handler\n(there are five) that they must break down the THPs themselves.  Also, the\n_generic_ code will never break down a THP unless a -\u003epte_entry handler is\nactually set.\n\nThis means that the -\u003epmd_entry handlers can now choose to deal with THPs\nwithout breaking them down.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Dave Hansen \u003cdave@linux.vnet.ibm.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nReviewed-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nTested-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nCc: Michael J Wolf \u003cmjwolf@us.ibm.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "278df9f451dc71dcd002246be48358a473504ad0",
      "tree": "3b79e956f2f0b9381f62518ff2fcf94df4ff9c3f",
      "parents": [
        "3f58a82943337fb6e79acfa5346719a97d3c0b98"
      ],
      "author": {
        "name": "Minchan Kim",
        "email": "minchan.kim@gmail.com",
        "time": "Tue Mar 22 16:32:54 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:04 2011 -0700"
      },
      "message": "mm: reclaim invalidated page ASAP\n\ninvalidate_mapping_pages is very big hint to reclaimer.  It means user\ndoesn\u0027t want to use the page any more.  So in order to prevent working set\npage eviction, this patch move the page into tail of inactive list by\nPG_reclaim.\n\nPlease, remember that pages in inactive list are working set as well as\nactive list.  If we don\u0027t move pages into inactive list\u0027s tail, pages near\nby tail of inactive list can be evicted although we have a big clue about\nuseless pages.  It\u0027s totally bad.\n\nNow PG_readahead/PG_reclaim is shared.  fe3cba17 added ClearPageReclaim\ninto clear_page_dirty_for_io for preventing fast reclaiming readahead\nmarker page.\n\nIn this series, PG_reclaim is used by invalidated page, too.  If VM find\nthe page is invalidated and it\u0027s dirty, it sets PG_reclaim to reclaim\nasap.  Then, when the dirty page will be writeback,\nclear_page_dirty_for_io will clear PG_reclaim unconditionally.  It\ndisturbs this serie\u0027s goal.\n\nI think it\u0027s okay to clear PG_readahead when the page is dirty, not\nwriteback time.  So this patch moves ClearPageReadahead.  In v4,\nClearPageReadahead in set_page_dirty has a problem which is reported by\nSteven Barrett.  It\u0027s due to compound page.  Some driver(ex, audio) calls\nset_page_dirty with compound page which isn\u0027t on LRU.  but my patch does\nClearPageRelcaim on compound page.  In non-CONFIG_PAGEFLAGS_EXTENDED, it\nbreaks PageTail flag.\n\nI think it doesn\u0027t affect THP and pass my test with THP enabling but Cced\nAndrea for double check.\n\nSigned-off-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nReported-by: Steven Barrett \u003cdamentz@liquorix.net\u003e\nReviewed-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Nick Piggin \u003cnpiggin@kernel.dk\u003e\nCc: 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": "3f58a82943337fb6e79acfa5346719a97d3c0b98",
      "tree": "667441ac13c845edac93c937d0baba03a2021ea8",
      "parents": [
        "315601809d124d046abd6c3ffa346d0dbd7aa29d"
      ],
      "author": {
        "name": "Minchan Kim",
        "email": "minchan.kim@gmail.com",
        "time": "Tue Mar 22 16:32:53 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:03 2011 -0700"
      },
      "message": "memcg: move memcg reclaimable page into tail of inactive list\n\nThe rotate_reclaimable_page function moves just written out pages, which\nthe VM wanted to reclaim, to the end of the inactive list.  That way the\nVM will find those pages first next time it needs to free memory.\n\nThis patch applies the rule in memcg.  It can help to prevent unnecessary\nworking page eviction of memcg.\n\nSigned-off-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nReviewed-by: Rik van Riel \u003criel@redhat.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nAcked-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: 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": "315601809d124d046abd6c3ffa346d0dbd7aa29d",
      "tree": "be48e1a0053e3ada3a5c25561923f1b87f8e1719",
      "parents": [
        "481b4bb5e370aa69c1dc276bd08871ec01b41d2a"
      ],
      "author": {
        "name": "Minchan Kim",
        "email": "minchan.kim@gmail.com",
        "time": "Tue Mar 22 16:32:52 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:03 2011 -0700"
      },
      "message": "mm: deactivate invalidated pages\n\nRecently, there are reported problem about thrashing.\n(http://marc.info/?l\u003drsync\u0026m\u003d128885034930933\u0026w\u003d2) It happens by backup\nworkloads(ex, nightly rsync).  That\u0027s because the workload makes just\nuse-once pages and touches pages twice.  It promotes the page into active\nlist so that it results in working set page eviction.\n\nSome app developer want to support POSIX_FADV_NOREUSE.  But other OSes\ndon\u0027t support it, either.\n(http://marc.info/?l\u003dlinux-mm\u0026m\u003d128928979512086\u0026w\u003d2)\n\nBy other approach, app developers use POSIX_FADV_DONTNEED.  But it has a\nproblem.  If kernel meets page is writing during invalidate_mapping_pages,\nit can\u0027t work.  It makes for application programmer to use it since they\nalways have to sync data before calling fadivse(..POSIX_FADV_DONTNEED) to\nmake sure the pages could be discardable.  At last, they can\u0027t use\ndeferred write of kernel so that they could see performance loss.\n(http://insights.oetiker.ch/linux/fadvise.html)\n\nIn fact, invalidation is very big hint to reclaimer.  It means we don\u0027t\nuse the page any more.  So let\u0027s move the writing page into inactive\nlist\u0027s head if we can\u0027t truncate it right now.\n\nWhy I move page to head of lru on this patch, Dirty/Writeback page would\nbe flushed sooner or later.  It can prevent writeout of pageout which is\nless effective than flusher\u0027s writeout.\n\nOriginally, I reused lru_demote of Peter with some change so added his\nSigned-off-by.\n\nSigned-off-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nReported-by: Ben Gamari \u003cbgamari.foss@gmail.com\u003e\nSigned-off-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nAcked-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Nick Piggin \u003cnpiggin@kernel.dk\u003e\nCc: 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": "01d8b20dec5f4019283e244aba50ba86fe6ead6e",
      "tree": "738a2e675547de61f74d6f4019dd5830c40446dd",
      "parents": [
        "83813267c699ab11cc65a6d9d0f42db42f0862b3"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "a.p.zijlstra@chello.nl",
        "time": "Tue Mar 22 16:32:49 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:03 2011 -0700"
      },
      "message": "mm: simplify anon_vma refcounts\n\nThis patch changes the anon_vma refcount to be 0 when the object is free.\nIt does this by adding 1 ref to being in use in the anon_vma structure\n(iow.  the anon_vma-\u003ehead list is not empty).\n\nThis allows a simpler release scheme without having to check both the\nrefcount and the list as well as avoids taking a ref for each entry on the\nlist.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Hugh Dickins \u003chughd@google.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: 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": "83813267c699ab11cc65a6d9d0f42db42f0862b3",
      "tree": "8a3257ae177ba0f1bb0aebd4a503357c26472908",
      "parents": [
        "9e60109f125013b6c571f399a15a8b0fe1ffa4e6"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "a.p.zijlstra@chello.nl",
        "time": "Tue Mar 22 16:32:48 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:03 2011 -0700"
      },
      "message": "mm: move anon_vma ref out from under CONFIG_foo\n\nWe need the anon_vma refcount unconditionally to simplify the anon_vma\nlifetime rules.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Hugh Dickins \u003chughd@google.com\u003e\nAcked-by: 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": "9e60109f125013b6c571f399a15a8b0fe1ffa4e6",
      "tree": "52d34958e82e5649b737e21e453516a3ecd365d3",
      "parents": [
        "7bc32f6f90dae67730645da67bfd44304f810f93"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "a.p.zijlstra@chello.nl",
        "time": "Tue Mar 22 16:32:46 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:03 2011 -0700"
      },
      "message": "mm: rename drop_anon_vma() to put_anon_vma()\n\nThe normal code pattern used in the kernel is: get/put.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Hugh Dickins \u003chughd@google.com\u003e\nReviewed-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7bc32f6f90dae67730645da67bfd44304f810f93",
      "tree": "caefa40b2b5563d0e54686b40cb6f6375c2015cb",
      "parents": [
        "1d16871d8c96deadc5f9753b6b096074f2cbcbe1"
      ],
      "author": {
        "name": "Akinobu Mita",
        "email": "akinobu.mita@gmail.com",
        "time": "Tue Mar 22 16:32:46 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:02 2011 -0700"
      },
      "message": "mm: debug-pagealloc: fix kconfig dependency warning\n\nFix kconfig dependency warning to satisfy dependencies:\n\nwarning: (PAGE_POISONING) selects DEBUG_PAGEALLOC which has unmet\ndirect dependencies (DEBUG_KERNEL \u0026\u0026 ARCH_SUPPORTS_DEBUG_PAGEALLOC \u0026\u0026\n(!HIBERNATION || !PPC \u0026\u0026 !SPARC) \u0026\u0026 !KMEMCHECK)\n\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nCc: Randy Dunlap \u003crandy.dunlap@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": "1d16871d8c96deadc5f9753b6b096074f2cbcbe1",
      "tree": "9f3f0c5a60e7a5bf4bfa9f2bd4c9492db36cecfe",
      "parents": [
        "e64a782fec684c29a8204c51b3cb554dce588592"
      ],
      "author": {
        "name": "Namhyung Kim",
        "email": "namhyung@gmail.com",
        "time": "Tue Mar 22 16:32:45 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:02 2011 -0700"
      },
      "message": "mm: batch-free pcp list if possible\n\nfree_pcppages_bulk() frees pages from pcp lists in a round-robin fashion\nby keeping batch_free counter.  But it doesn\u0027t need to spin if there is\nonly one non-empty list.  This can be checked by batch_free \u003d\u003d\nMIGRATE_PCPTYPES.\n\n[akpm@linux-foundation.org: fix comment]\nSigned-off-by: Namhyung Kim \u003cnamhyung@gmail.com\u003e\nAcked-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e64a782fec684c29a8204c51b3cb554dce588592",
      "tree": "5ff0beb21b973f1ad0edc1e31b6a1c2ee4406bdc",
      "parents": [
        "702cfbf93aaf3a091b0c64c8766c1ade0a820c38"
      ],
      "author": {
        "name": "Minchan Kim",
        "email": "minchan.kim@gmail.com",
        "time": "Tue Mar 22 16:32:44 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 22 17:44:02 2011 -0700"
      },
      "message": "mm: change __remove_from_page_cache()\n\nNow we renamed remove_from_page_cache with delete_from_page_cache.  As\nconsistency of __remove_from_swap_cache and remove_from_swap_cache, we\nchange internal page cache handling function name, too.\n\nSigned-off-by: Minchan Kim \u003cminchan.kim@gmail.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nAcked-by: Hugh Dickins \u003chughd@google.com\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nReviewed-by: Johannes Weiner \u003channes@cmpxchg.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"
    }
  ],
  "next": "702cfbf93aaf3a091b0c64c8766c1ade0a820c38"
}