)]}' { "log": [ { "commit": "48fd4f93a00eac844678629f2f00518e146ed30d", "tree": "c71f6792742886db9912078c70b3e8806e9f260f", "parents": [ "a4a778971b9cfcbedb8648ba502d801f7db04c47" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Aug 22 10:00:36 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Wed Aug 27 09:50:19 2008 +0200" }, "message": "block: submit_bh() inadvertently discards barrier flag on a sync write\n\nReported by Milan Broz \u003cmbroz@redhat.com\u003e, commit 18ce3751 inadvertently\nmade submit_bh() discard the barrier bit for a WRITE_SYNC request. Fix\nthat up.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "ca5de404ff036a29b25e9a83f6919c9f606c5841", "tree": "474da867c4d4086313cee90cdc3560bb17fade96", "parents": [ "529ae9aaa08378cfe2a4350bded76f32cc8ff0ce" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sat Aug 02 12:02:13 2008 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 04 21:56:09 2008 -0700" }, "message": "fs: rename buffer trylock\n\nLike the page lock change, this also requires name change, so convert the\nraw test_and_set bitop to a trylock.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dbacefc9c4f6bd365243db379473ab7041656d90", "tree": "01bcdbe23ea7008971161366dab56bfc47b2049a", "parents": [ "d406f66ddb0d7491ddd53e4600c425d76a8a245f" ], "author": { "name": "Thomas Petazzoni", "email": "thomas.petazzoni@free-electrons.com", "time": "Tue Jul 29 22:33:47 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jul 30 09:41:46 2008 -0700" }, "message": "fs/buffer.c: uninline __remove_assoc_queue()\n\nUninline the __remove_assoc_queue() function in fs/buffer.c, called at too\nmany places and too long to really be inlined. Size results:\n\n text\t data\t bss\t dec\t hex\tfilename\n1134606\t 118840\t 212992\t1466438\t 166046\tvmlinux.old\n1134303\t 118840\t 212992\t1466135\t 165f17\tvmlinux\n -303 0 0 -303 -12F +/-\n\nThis patch is part of the Linux Tiny project and has been originally\nwritten by Matt Mackall \u003cmpm@selenic.com\u003e.\n\nSigned-off-by: Thomas Petazzoni \u003cthomas.petazzoni@free-electrons.com\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8ab22b9abb5c55413802e4adc9aa6223324547c3", "tree": "cff3319e1275e8a7c083d492889ec6bd0c7712d3", "parents": [ "d84a52f62f6a396ed77aa0052da74ca9e760b28a" ], "author": { "name": "Hisashi Hifumi", "email": "hifumi.hisashi@oss.ntt.co.jp", "time": "Mon Jul 28 15:46:36 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jul 28 16:30:21 2008 -0700" }, "message": "vfs: pagecache usage optimization for pagesize!\u003dblocksize\n\nWhen we read some part of a file through pagecache, if there is a\npagecache of corresponding index but this page is not uptodate, read IO\nis issued and this page will be uptodate.\n\nI think this is good for pagesize \u003d\u003d blocksize environment but there is\nroom for improvement on pagesize !\u003d blocksize environment. Because in\nthis case a page can have multiple buffers and even if a page is not\nuptodate, some buffers can be uptodate.\n\nSo I suggest that when all buffers which correspond to a part of a file\nthat we want to read are uptodate, use this pagecache and copy data from\nthis pagecache to user buffer even if a page is not uptodate. This can\nreduce read IO and improve system throughput.\n\nI wrote a benchmark program and got result number with this program.\n\nThis benchmark do:\n\n 1: mount and open a test file.\n\n 2: create a 512MB file.\n\n 3: close a file and umount.\n\n 4: mount and again open a test file.\n\n 5: pwrite randomly 300000 times on a test file. offset is aligned\n by IO size(1024bytes).\n\n 6: measure time of preading randomly 100000 times on a test file.\n\nThe result was:\n\t2.6.26\n 330 sec\n\n\t2.6.26-patched\n 226 sec\n\nArch:i386\nFilesystem:ext3\nBlocksize:1024 bytes\nMemory: 1GB\n\nOn ext3/4, a file is written through buffer/block. So random read/write\nmixed workloads or random read after random write workloads are optimized\nwith this patch under pagesize !\u003d blocksize environment. This test result\nshowed this.\n\nThe benchmark program is as follows:\n\n#include \u003cstdio.h\u003e\n#include \u003csys/types.h\u003e\n#include \u003csys/stat.h\u003e\n#include \u003cfcntl.h\u003e\n#include \u003cunistd.h\u003e\n#include \u003ctime.h\u003e\n#include \u003cstdlib.h\u003e\n#include \u003cstring.h\u003e\n#include \u003csys/mount.h\u003e\n\n#define LEN 1024\n#define LOOP 1024*512 /* 512MB */\n\nmain(void)\n{\n\tunsigned long i, offset, filesize;\n\tint fd;\n\tchar buf[LEN];\n\ttime_t t1, t2;\n\n\tif (mount(\"/dev/sda1\", \"/root/test1/\", \"ext3\", 0, 0) \u003c 0) {\n\t\tperror(\"cannot mount\\n\");\n\t\texit(1);\n\t}\n\tmemset(buf, 0, LEN);\n\tfd \u003d open(\"/root/test1/testfile\", O_CREAT|O_RDWR|O_TRUNC);\n\tif (fd \u003c 0) {\n\t\tperror(\"cannot open file\\n\");\n\t\texit(1);\n\t}\n\tfor (i \u003d 0; i \u003c LOOP; i++)\n\t\twrite(fd, buf, LEN);\n\tclose(fd);\n\tif (umount(\"/root/test1/\") \u003c 0) {\n\t\tperror(\"cannot umount\\n\");\n\t\texit(1);\n\t}\n\tif (mount(\"/dev/sda1\", \"/root/test1/\", \"ext3\", 0, 0) \u003c 0) {\n\t\tperror(\"cannot mount\\n\");\n\t\texit(1);\n\t}\n\tfd \u003d open(\"/root/test1/testfile\", O_RDWR);\n\tif (fd \u003c 0) {\n\t\tperror(\"cannot open file\\n\");\n\t\texit(1);\n\t}\n\n\tfilesize \u003d LEN * LOOP;\n\tfor (i \u003d 0; i \u003c 300000; i++){\n\t\toffset \u003d (random() % filesize) \u0026 (~(LEN - 1));\n\t\tpwrite(fd, buf, LEN, offset);\n\t}\n\tprintf(\"start test\\n\");\n\ttime(\u0026t1);\n\tfor (i \u003d 0; i \u003c 100000; i++){\n\t\toffset \u003d (random() % filesize) \u0026 (~(LEN - 1));\n\t\tpread(fd, buf, LEN, offset);\n\t}\n\ttime(\u0026t2);\n\tprintf(\"%ld sec\\n\", t2-t1);\n\tclose(fd);\n\tif (umount(\"/root/test1/\") \u003c 0) {\n\t\tperror(\"cannot umount\\n\");\n\t\texit(1);\n\t}\n}\n\nSigned-off-by: Hisashi Hifumi \u003chifumi.hisashi@oss.ntt.co.jp\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Jan Kara \u003cjack@ucw.cz\u003e\nCc: \u003clinux-ext4@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5c752ad9f35910ff1912b3f3ae82878178ddc432", "tree": "4ac627f9cdd7f0e1b0557b9b5c4838587c1c0890", "parents": [ "5cd2b459d326a424671dcd95f038649f7bf7cb96" ], "author": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Fri Jul 25 19:45:40 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:07 2008 -0700" }, "message": "Use WARN() in fs/\n\nUse WARN() instead of a printk+WARN_ON() pair; this way the message\nbecomes part of the warning section for better reporting/collection.\n\nSigned-off-by: Arjan van de Ven \u003carjan@linux.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": "51cc50685a4275c6a02653670af9f108a64e01cf", "tree": "819d47bd2b0c8a9d1835d863853804b0a0242b97", "parents": [ "d91958815d214ea365b98cbff6215383897edcb6" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Fri Jul 25 19:45:34 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:07 2008 -0700" }, "message": "SL*B: drop kmem cache argument from constructor\n\nKmem cache passed to constructor is only needed for constructors that are\nthemselves multiplexeres. Nobody uses this \"feature\", nor does anybody uses\npassed kmem cache in non-trivial way, so pass only pointer to object.\n\nNon-trivial places are:\n\tarch/powerpc/mm/init_64.c\n\tarch/powerpc/mm/hugetlbpage.c\n\nThis is flag day, yes.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nAcked-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Jon Tollefson \u003ckniht@linux.vnet.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Matt Mackall \u003cmpm@selenic.com\u003e\n[akpm@linux-foundation.org: fix arch/powerpc/mm/hugetlbpage.c]\n[akpm@linux-foundation.org: fix mm/slab.c]\n[akpm@linux-foundation.org: fix ubifs]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "19fd6231279be3c3bdd02ed99f9b0eb195978064", "tree": "ee09121054262d73c551b57114acd855b82a7a82", "parents": [ "a60637c85893e7191faaafa6a72e197c24386727" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Fri Jul 25 19:45:32 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:06 2008 -0700" }, "message": "mm: spinlock tree_lock\n\nmapping-\u003etree_lock has no read lockers. convert the lock from an rwlock\nto a spinlock.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: \"Paul E. McKenney\" \u003cpaulmck@us.ibm.com\u003e\nReviewed-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1a781a777b2f6ac46523fe92396215762ced624d", "tree": "4f34bb4aade85c0eb364b53d664ec7f6ab959006", "parents": [ "b9d2252c1e44fa83a4e65fdc9eb93db6297c55af", "42a2f217a5e324ed5f2373ab1b7a0a15187c4d6c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jul 15 21:55:59 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jul 15 21:55:59 2008 +0200" }, "message": "Merge branch \u0027generic-ipi\u0027 into generic-ipi-for-linus\n\nConflicts:\n\n\tarch/powerpc/Kconfig\n\tarch/s390/kernel/time.c\n\tarch/x86/kernel/apic_32.c\n\tarch/x86/kernel/cpu/perfctr-watchdog.c\n\tarch/x86/kernel/i8259_64.c\n\tarch/x86/kernel/ldt.c\n\tarch/x86/kernel/nmi_64.c\n\tarch/x86/kernel/smpboot.c\n\tarch/x86/xen/smp.c\n\tinclude/asm-x86/hw_irq_32.h\n\tinclude/asm-x86/hw_irq_64.h\n\tinclude/asm-x86/mach-default/irq_vectors.h\n\tinclude/asm-x86/mach-voyager/irq_vectors.h\n\tinclude/asm-x86/smp.h\n\tkernel/Makefile\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "29a814d2ee0e43c2980f33f91c1311ec06c0aa35", "tree": "dfc9d45fc3194237192b6cde1069faa70fe4c260", "parents": [ "87c89c232c8f7b3820c33c3b9bc803e9358027da" ], "author": { "name": "Alex Tomas", "email": "alex@clusterfs.com", "time": "Fri Jul 11 19:27:31 2008 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Fri Jul 11 19:27:31 2008 -0400" }, "message": "vfs: add hooks for ext4\u0027s delayed allocation support\n\nExport mpage_bio_submit() and __mpage_writepage() for the benefit of\next4\u0027s delayed allocation support. Also change __block_write_full_page\nso that if buffers that have the BH_Delay flag set it will call\nget_block() to get the physical block allocated, just as in the\n!BH_Mapped case.\n\nSigned-off-by: Alex Tomas \u003calex@clusterfs.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n\n" }, { "commit": "c7d206b3379f7d6462e778b74f475c470ee3dcaf", "tree": "71d11797c72e2e4ee04e6690c048fd26f25ae90d", "parents": [ "2e9ee850355593e311d9a26542290fe51e152f74" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Fri Jul 11 19:27:31 2008 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Fri Jul 11 19:27:31 2008 -0400" }, "message": "vfs: Move mark_inode_dirty() from under page lock in generic_write_end()\n\nThere\u0027s no need to call mark_inode_dirty() under page lock in\ngeneric_write_end(). It unnecessarily makes hold time of page lock longer\nand more importantly it forces locking order of page lock and transaction\nstart for journaling filesystems.\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Aneesh Kumar K.V \u003caneesh.kumar@linux.vnet.ibm.com\u003e\nSigned-off-by: \"Theodore Ts\u0027o\" \u003ctytso@mit.edu\u003e\n\n" }, { "commit": "18ce3751ccd488c78d3827e9f6bf54e6322676fb", "tree": "4bb83c2b963e8ebe918b79f61d1a440fb1d28f8d", "parents": [ "d585d0b9d73ed999cc7b8cf3cac4a5b01abb544e" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 01 09:07:34 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 01 09:07:34 2008 +0200" }, "message": "Properly notify block layer of sync writes\n\nfsync_buffers_list() and sync_dirty_buffer() both issue async writes and\nthen immediately wait on them. Conceptually, that makes them sync writes\nand we should treat them as such so that the IO schedulers can handle\nthem appropriately.\n\nThis patch fixes a write starvation issue that Lin Ming reported, where\nxx is stuck for more than 2 minutes because of a large number of\nsynchronous IO in the system:\n\nINFO: task kjournald:20558 blocked for more than 120 seconds.\n\"echo 0 \u003e /proc/sys/kernel/hung_task_timeout_secs\" disables this\nmessage.\nkjournald D ffff810010820978 6712 20558 2\nffff81022ddb1d10 0000000000000046 ffff81022e7baa10 ffffffff803ba6f2\nffff81022ecd0000 ffff8101e6dc9160 ffff81022ecd0348 000000008048b6cb\n0000000000000086 ffff81022c4e8d30 0000000000000000 ffffffff80247537\nCall Trace:\n[\u003cffffffff803ba6f2\u003e] kobject_get+0x12/0x17\n[\u003cffffffff80247537\u003e] getnstimeofday+0x2f/0x83\n[\u003cffffffff8029c1ac\u003e] sync_buffer+0x0/0x3f\n[\u003cffffffff8066d195\u003e] io_schedule+0x5d/0x9f\n[\u003cffffffff8029c1e7\u003e] sync_buffer+0x3b/0x3f\n[\u003cffffffff8066d3f0\u003e] __wait_on_bit+0x40/0x6f\n[\u003cffffffff8029c1ac\u003e] sync_buffer+0x0/0x3f\n[\u003cffffffff8066d48b\u003e] out_of_line_wait_on_bit+0x6c/0x78\n[\u003cffffffff80243909\u003e] wake_bit_function+0x0/0x23\n[\u003cffffffff8029e3ad\u003e] sync_dirty_buffer+0x98/0xcb\n[\u003cffffffff8030056b\u003e] journal_commit_transaction+0x97d/0xcb6\n[\u003cffffffff8023a676\u003e] lock_timer_base+0x26/0x4b\n[\u003cffffffff8030300a\u003e] kjournald+0xc1/0x1fb\n[\u003cffffffff802438db\u003e] autoremove_wake_function+0x0/0x2e\n[\u003cffffffff80302f49\u003e] kjournald+0x0/0x1fb\n[\u003cffffffff802437bb\u003e] kthread+0x47/0x74\n[\u003cffffffff8022de51\u003e] schedule_tail+0x28/0x5d\n[\u003cffffffff8020cac8\u003e] child_rip+0xa/0x12\n[\u003cffffffff80243774\u003e] kthread+0x0/0x74\n[\u003cffffffff8020cabe\u003e] child_rip+0x0/0x12\n\nLin Ming confirms that this patch fixes the issue. I\u0027ve run tests with\nit for the past week and no ill effects have been observed, so I\u0027m\nproposing it for inclusion into 2.6.26.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "15c8b6c1aaaf1c4edd67e2f02e4d8e1bd1a51c0d", "tree": "3658f893c2f89ea0be4c6cc08aa11fa54476d0f4", "parents": [ "8691e5a8f691cc2a4fda0651e8d307aaba0e7d68" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri May 09 09:39:44 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jun 26 11:24:38 2008 +0200" }, "message": "on_each_cpu(): kill unused \u0027retry\u0027 parameter\n\nIt\u0027s not even passed on to smp_call_function() anymore, since that\nwas removed. So kill it.\n\nAcked-by: Jeremy Fitzhardinge \u003cjeremy.fitzhardinge@citrix.com\u003e\nReviewed-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "8e24eea728068bbeb6a3c500b848f883a20bf225", "tree": "93e79da649723e2766237505b22725fec395f139", "parents": [ "530b6412786d7f83592c1a8e2445541ed73fca76" ], "author": { "name": "Harvey Harrison", "email": "harvey.harrison@gmail.com", "time": "Wed Apr 30 00:55:09 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:54 2008 -0700" }, "message": "fs: replace remaining __FUNCTION__ occurrences\n\n__FUNCTION__ is gcc-specific, use __func__\n\nSigned-off-by: Harvey Harrison \u003charvey.harrison@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": "f1e3af72c10ba74fb15864c354515ec1bd8bf2a5", "tree": "faf2d2f8b0264fd175acf8ed5623c74e0da908ec", "parents": [ "946a57b526a16e5662235cb8f573337bc8ecdc48" ], "author": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Tue Apr 29 00:59:01 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 29 08:06:01 2008 -0700" }, "message": "make fs/buffer.c:cont_expand_zero() static\n\ncont_expand_zero() can become static.\n\nSigned-off-by: Adrian Bunk \u003cbunk@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": "946a57b526a16e5662235cb8f573337bc8ecdc48", "tree": "e7805833cf724d2bf2b5ebfe0fc7bb4d8cd2c321", "parents": [ "45cc2b96f20fa27088a650587e5d9dc5fa5e32c0" ], "author": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Tue Apr 29 00:59:00 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 29 08:06:01 2008 -0700" }, "message": "remove generic_commit_write()\n\nRemove the obsolete and no longer used generic_commit_write().\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "061e97469f46f924cf14bbf1dd4805b46986691a", "tree": "f89bae50777ff9d7a8dc917342f55218de132166", "parents": [ "e69be4c9c4ac1b6bb6380512557da0afa6262e98" ], "author": { "name": "OGAWA Hirofumi", "email": "hirofumi@mail.parknet.co.jp", "time": "Mon Apr 28 02:16:28 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:47 2008 -0700" }, "message": "Add balance_dirty_pages_ratelimited() to cont_expand_zero()\n\nOn the systems, ftruncate() which expand size for FAT became the cause\nof OOM. The cont_expand_zero() filled all memory with dirty pages,\nand since disk is very slow, limit of page scanning was exceeded, then\nit triggered OOM.\n\nThis adds balance_dirty_pages_ratelimited() to avoid filling memory\nwith dirty pages.\n\nSigned-off-by: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "19770b32609b6bf97a3dece2529089494cbfc549", "tree": "3b5922d1b20aabdf929bde9309f323841717747a", "parents": [ "dd1a239f6f2d4d3eedd318583ec319aa145b324c" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon Apr 28 02:12:18 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:19 2008 -0700" }, "message": "mm: filter based on a nodemask as well as a gfp_mask\n\nThe MPOL_BIND policy creates a zonelist that is used for allocations\ncontrolled by that mempolicy. As the per-node zonelist is already being\nfiltered based on a zone id, this patch adds a version of __alloc_pages() that\ntakes a nodemask for further filtering. This eliminates the need for\nMPOL_BIND to create a custom zonelist.\n\nA positive benefit of this is that allocations using MPOL_BIND now use the\nlocal node\u0027s distance-ordered zonelist instead of a custom node-id-ordered\nzonelist. I.e., pages will be allocated from the closest allowed node with\navailable memory.\n\n[Lee.Schermerhorn@hp.com: Mempolicy: update stale documentation and comments]\n[Lee.Schermerhorn@hp.com: Mempolicy: make dequeue_huge_page_vma() obey MPOL_BIND nodemask]\n[Lee.Schermerhorn@hp.com: Mempolicy: make dequeue_huge_page_vma() obey MPOL_BIND nodemask rework]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dd1a239f6f2d4d3eedd318583ec319aa145b324c", "tree": "aff4224c96b5e2e67588c3946858a724863eeaf9", "parents": [ "54a6eb5c4765aa573a030ceeba2c14e3d2ea5706" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon Apr 28 02:12:17 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:18 2008 -0700" }, "message": "mm: have zonelist contains structs with both a zone pointer and zone_idx\n\nFiltering zonelists requires very frequent use of zone_idx(). This is costly\nas it involves a lookup of another structure and a substraction operation. As\nthe zone_idx is often required, it should be quickly accessible. The node idx\ncould also be stored here if it was found that accessing zone-\u003enode is\nsignificant which may be the case on workloads where nodemasks are heavily\nused.\n\nThis patch introduces a struct zoneref to store a zone pointer and a zone\nindex. The zonelist then consists of an array of these struct zonerefs which\nare looked up as necessary. Helpers are given for accessing the zone index as\nwell as the node index.\n\n[kamezawa.hiroyu@jp.fujitsu.com: Suggested struct zoneref instead of embedding information in pointers]\n[hugh@veritas.com: mm-have-zonelist: fix memcg ooms]\n[hugh@veritas.com: just return do_try_to_free_pages]\n[hugh@veritas.com: do_try_to_free_pages gfp_mask redundant]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "54a6eb5c4765aa573a030ceeba2c14e3d2ea5706", "tree": "547176a090beb787722a153cf2b8b942dc0e68db", "parents": [ "18ea7e710d2452fa726814a406779188028cf1bf" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon Apr 28 02:12:16 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:18 2008 -0700" }, "message": "mm: use two zonelist that are filtered by GFP mask\n\nCurrently a node has two sets of zonelists, one for each zone type in the\nsystem and a second set for GFP_THISNODE allocations. Based on the zones\nallowed by a gfp mask, one of these zonelists is selected. All of these\nzonelists consume memory and occupy cache lines.\n\nThis patch replaces the multiple zonelists per-node with two zonelists. The\nfirst contains all populated zones in the system, ordered by distance, for\nfallback allocations when the target/preferred node has no free pages. The\nsecond contains all populated zones in the node suitable for GFP_THISNODE\nallocations.\n\nAn iterator macro is introduced called for_each_zone_zonelist() that interates\nthrough each zone allowed by the GFP flags in the selected zonelist.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0e88460da6ab7bb6a7ef83675412ed5b6315d741", "tree": "1feb4de2362e4998a0deeab66af1efb9c7b8bb34", "parents": [ "dac1d27bc8d5ca636d3014ecfdf94407031d1970" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon Apr 28 02:12:14 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:18 2008 -0700" }, "message": "mm: introduce node_zonelist() for accessing the zonelist for a GFP mask\n\nIntroduce a node_zonelist() helper function. It is used to lookup the\nappropriate zonelist given a node and a GFP mask. The patch on its own is a\ncleanup but it helps clarify parts of the two-zonelist-per-node patchset. If\nnecessary, it can be merged with the next patch in this set without problems.\n\nReviewed-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dac1d27bc8d5ca636d3014ecfdf94407031d1970", "tree": "2d92f6533f91da05c5f3d61e314f36b9313be89a", "parents": [ "9d02dbc8137759e4c2f91db0b7f9c8a1ec2a9276" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Mon Apr 28 02:12:12 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:18 2008 -0700" }, "message": "mm: use zonelists instead of zones when direct reclaiming pages\n\nThe following patches replace multiple zonelists per node with two zonelists\nthat are filtered based on the GFP flags. The patches as a set fix a bug with\nregard to the use of MPOL_BIND and ZONE_MOVABLE. With this patchset, the\nMPOL_BIND will apply to the two highest zones when the highest zone is\nZONE_MOVABLE. This should be considered as an alternative fix for the\nMPOL_BIND+ZONE_MOVABLE in 2.6.23 to the previously discussed hack that filters\nonly custom zonelists.\n\nThe first patch cleans up an inconsistency where direct reclaim uses\nzonelist-\u003ezones where other places use zonelist.\n\nThe second patch introduces a helper function node_zonelist() for looking up\nthe appropriate zonelist for a GFP mask which simplifies patches later in the\nset.\n\nThe third patch defines/remembers the \"preferred zone\" for numa statistics, as\nit is no longer always the first zone in a zonelist.\n\nThe forth patch replaces multiple zonelists with two zonelists that are\nfiltered. The two zonelists are due to the fact that the memoryless patchset\nintroduces a second set of zonelists for __GFP_THISNODE.\n\nThe fifth patch introduces helper macros for retrieving the zone and node\nindices of entries in a zonelist.\n\nThe final patch introduces filtering of the zonelists based on a nodemask.\nTwo zonelists exist per node, one for normal allocations and one for\n__GFP_THISNODE.\n\nPerformance results varied depending on the machine configuration. In real\nworkloads the gain/loss will depend on how much the userspace portion of the\nbenchmark benefits from having more cache available due to reduced referencing\nof zonelists.\n\nThese are the range of performance losses/gains when running against\n2.6.24-rc4-mm1. The set and these machines are a mix of i386, x86_64 and\nppc64 both NUMA and non-NUMA.\n\t\t\t loss to gain\nTotal CPU time on Kernbench: -0.86% to 1.13%\nElapsed time on Kernbench: -0.79% to 0.76%\npage_test from aim9: -4.37% to 0.79%\nbrk_test from aim9: -0.71% to 4.07%\nfork_test from aim9: -1.84% to 4.60%\nexec_test from aim9: -0.71% to 1.08%\n\nThis patch:\n\nThe allocator deals with zonelists which indicate the order in which zones\nshould be targeted for an allocation. Similarly, direct reclaim of pages\niterates over an array of zones. For consistency, this patch converts direct\nreclaim to use a zonelist. No functionality is changed by this patch. This\nsimplifies zonelist iterators in the next patch.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "488514d1798289f56f80ed018e246179fe500383", "tree": "e68d9f703dcbceed0cc08b03014d109d7ec3acd4", "parents": [ "e92adcba261fd391591bb63c1703185a04a41554" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Apr 28 02:12:05 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:17 2008 -0700" }, "message": "Remove set_migrateflags()\n\nMigrate flags must be set on slab creation as agreed upon when the antifrag\nlogic was reviewed. Otherwise some slabs of a slabcache will end up in the\nunmovable and others in the reclaimable section depending on which flag was\nactive when a new slab page was allocated.\n\nThis likely slid in somehow when antifrag was merged. Remove it.\n\nThe buffer_heads are always allocated with __GFP_RECLAIMABLE because the\nSLAB_RECLAIM_ACCOUNT option is set. The set_migrateflags() never had any\neffect there.\n\nRadix tree allocations are not directly reclaimable but they are allocated\nwith __GFP_RECLAIMABLE set on each allocation. We now set\nSLAB_RECLAIM_ACCOUNT on radix tree slab creation making sure that radix\ntree slabs are consistently placed in the reclaimable section. Radix tree\nslabs will also be accounted as such.\n\nThere is then no user left of set_migratepages. So remove it.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\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": "1be62dc190ebaca331038962c873e7967de6cc4b", "tree": "a8eb0a106bf362819d2bb0fc602b0e52df6a4198", "parents": [ "4ed919014eb2b591eb8fdd4dd00226a65faddef4" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Apr 04 14:38:17 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Apr 04 14:38:17 2008 -0700" }, "message": "Be more careful about marking buffers dirty\n\nMikulas Patocka noted that the optimization where we check if a buffer\nwas already dirty (and we avoid re-dirtying it) was not really SMP-safe.\n\nSince the read of the old status was not synchronized with anything, an\naggressive CPU re-ordering of memory accesses might have moved that read\nup to before the data was even written to the buffer, and another CPU\nthat cleaned it again, causing the newly dirty state to never actually\nhit the disk.\n\nAdmittedly this would probably never trigger in practice, but it\u0027s still\nwrong.\n\nMikulas sent a patch that fixed the problem, but I dislike the subtlety\nof the whole optimization, so this is an alternate fix that is more\nexplicit about the particular SMP ordering for the optimization, and\nseparates out the speculative reads of the buffer state into its own\nconditional (and makes the memory barrier only happen if we are likely\nto actually hit the optimized case in the first place).\n\nI considered removing the optimization entirely, but Andrew argued for\nit\u0027s continued existence. I\u0027m a push-over.\n\nCc: Mikulas Patocka \u003cmikulas@artax.karlin.mff.cuni.cz\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5b41e74ad1b0bf7bc51765ae74e5dc564afc3e48", "tree": "e0edafb1d44154b258e013f745d123326183acbd", "parents": [ "1d4a788f15302877ff2cb08f22009e290a36a209" ], "author": { "name": "Dmitri Monakhov", "email": "dmonakhov@openvz.org", "time": "Fri Mar 28 14:15:52 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Mar 28 14:45:21 2008 -0700" }, "message": "vfs: fix data leak in nobh_write_end()\n\nCurrent nobh_write_end() implementation ignore partial writes(copied \u003c len)\ncase if page was fully mapped and simply mark page as Uptodate, which is\ntotally wrong because area [pos+copied, pos+len) wasn\u0027t updated explicitly in\nprevious write_begin call. It simply contains garbage from pagecache and\nresult in data leakage.\n\n#TEST_CASE_BEGIN:\n~~~~~~~~~~~~~~~~\nIn fact issue triggered by classical testcase\n\topen(\"/mnt/test\", O_RDWR|O_CREAT|O_TRUNC, 0666) \u003d 3\n\tftruncate(3, 409600) \u003d 0\n\twritev(3, [{\"a\", 1}, {NULL, 4095}], 2) \u003d 1\n##TESTCASE_SOURCE:\n~~~~~~~~~~~~~~~~~\n#include \u003cstdio.h\u003e\n#include \u003cstdlib.h\u003e\n#include \u003cfcntl.h\u003e\n#include \u003csys/uio.h\u003e\n#include \u003csys/mman.h\u003e\n#include \u003cerrno.h\u003e\nint main(int argc, char **argv)\n{\n\tint fd, ret;\n\tvoid* p;\n\tstruct iovec iov[2];\n\tfd \u003d open(argv[1], O_RDWR|O_CREAT|O_TRUNC, 0666);\n\tftruncate(fd, 409600);\n\tiov[0].iov_base\u003d\"a\";\n\tiov[0].iov_len\u003d1;\n\tiov[1].iov_base\u003dNULL;\n\tiov[1].iov_len\u003d4096;\n\tret \u003d writev(fd, iov, sizeof(iov)/sizeof(struct iovec));\n\tprintf(\"writev \u003d %d, err \u003d %d\\n\", ret, errno);\n\treturn 0;\n}\n##TESTCASE RESULT:\n~~~~~~~~~~~~~~~~~~\n[root@ts63 ~]# mount | grep mnt2\n/dev/mapper/test on /mnt2 type ext2 (rw,nobh)\n[root@ts63 ~]# /tmp/writev /mnt2/test\nwritev \u003d 1, err \u003d 0\n[root@ts63 ~]# hexdump -C /mnt2/test\n\n00000000 61 65 62 6f 6f 74 00 00 f0 b9 b4 59 3a 00 00 00 |aeboot.....Y:...|\n00000010 20 00 00 00 00 00 00 00 21 00 00 00 00 00 00 00 | .......!.......|\n00000020 df df df df df df df df df df df df df df df df |................|\n00000030 3a 00 00 00 2a 00 00 00 21 00 00 00 00 00 00 00 |:...*...!.......|\n00000040 60 c0 8c 00 00 00 00 00 40 4a 8d 00 00 00 00 00 |`.......@J......|\n00000050 00 00 00 00 00 00 00 00 41 00 00 00 00 00 00 00 |........A.......|\n00000060 74 69 6d 65 20 64 64 20 69 66 3d 2f 64 65 76 2f |time dd if\u003d/dev/|\n00000070 6c 6f 6f 70 30 20 20 6f 66 3d 2f 64 65 76 2f 6e |loop0 of\u003d/dev/n|\nskip..\n00000f50 00 00 00 00 00 00 00 00 31 00 00 00 00 00 00 00 |........1.......|\n00000f60 6d 6b 66 73 2e 65 78 74 33 20 2f 64 65 76 2f 76 |mkfs.ext3 /dev/v|\n00000f70 7a 76 67 2f 74 65 73 74 20 2d 62 34 30 39 36 00 |zvg/test -b4096.|\n00000f80 a0 fe 8c 00 00 00 00 00 21 00 00 00 00 00 00 00 |........!.......|\n00000f90 23 31 32 30 35 39 35 30 34 30 34 00 3a 00 00 00 |#1205950404.:...|\n00000fa0 20 00 8d 00 00 00 00 00 21 00 00 00 00 00 00 00 | .......!.......|\n00000fb0 d0 cf 8c 00 00 00 00 00 10 d0 8c 00 00 00 00 00 |................|\n00000fc0 00 00 00 00 00 00 00 00 41 00 00 00 00 00 00 00 |........A.......|\n00000fd0 6d 6f 75 6e 74 20 2f 64 65 76 2f 76 7a 76 67 2f |mount /dev/vzvg/|\n00000fe0 74 65 73 74 20 20 2f 76 7a 20 2d 6f 20 64 61 74 |test /vz -o dat|\n00000ff0 61 3d 77 72 69 74 65 62 61 63 6b 00 00 00 00 00 |a\u003dwriteback.....|\n00001000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|\n\nAs you can see file\u0027s page contains garbage from pagecache instead of zeros.\n#TEST_CASE_END\n\nAttached patch:\n- Add sanity check BUG_ON in order to prevent incorrect usage by caller,\n This is function invariant because page can has buffers and in no zero\n *fadata pointer at the same time.\n- Always attach buffers to page is it is partial write case.\n- Always switch back to generic_write_end if page has buffers.\n This is reasonable because if page already has buffer then generic_write_begin\n was called previously.\n\nSigned-off-by: Dmitri Monakhov \u003cdmonakhov@openvz.org\u003e\nReviewed-by: Nick Piggin \u003cnpiggin@suse.de\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": "a6b91919e0881a0d0a4ae5211d5c879a8c7ca92b", "tree": "148aabc0a92a297f9220174435e822f30c951215", "parents": [ "5366dc9fd1cb74023790a8edf29e4fe42c886dcf" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Wed Mar 19 17:01:00 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 19 18:53:36 2008 -0700" }, "message": "fs: fix kernel-doc notation warnings\n\nFix kernel-doc notation warnings in fs/.\n\nWarning(mmotm-2008-0314-1449//fs/super.c:560): missing initial short description on line:\n *\tmark_files_ro\nWarning(mmotm-2008-0314-1449//fs/locks.c:1277): missing initial short description on line:\n *\tlease_get_mtime\nWarning(mmotm-2008-0314-1449//fs/locks.c:1277): missing initial short description on line:\n *\tlease_get_mtime\nWarning(mmotm-2008-0314-1449//fs/namei.c:1368): missing initial short description on line:\n * lookup_one_len: filesystem helper to lookup single pathname component\nWarning(mmotm-2008-0314-1449//fs/buffer.c:3221): missing initial short description on line:\n * bh_uptodate_or_lock: Test whether the buffer is uptodate\nWarning(mmotm-2008-0314-1449//fs/buffer.c:3240): missing initial short description on line:\n * bh_submit_read: Submit a locked buffer for reading\nWarning(mmotm-2008-0314-1449//fs/fs-writeback.c:30): missing initial short description on line:\n * writeback_acquire: attempt to get exclusive writeback access to a device\nWarning(mmotm-2008-0314-1449//fs/fs-writeback.c:47): missing initial short description on line:\n * writeback_in_progress: determine whether there is writeback in progress\nWarning(mmotm-2008-0314-1449//fs/fs-writeback.c:58): missing initial short description on line:\n * writeback_release: relinquish exclusive writeback access against a device.\nWarning(mmotm-2008-0314-1449//include/linux/jbd.h:351): contents before sections\nWarning(mmotm-2008-0314-1449//include/linux/jbd.h:561): contents before sections\nWarning(mmotm-2008-0314-1449//fs/jbd/transaction.c:1935): missing initial short description on line:\n * void journal_invalidatepage()\n\nSigned-off-by: 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": "e3892296de632e3f9299d9fabe0c746740004891", "tree": "a6162f566e5ec6b0e099a79e7a59005fcfe9be4b", "parents": [ "10ed273f5016c582413dfbc468dd084957d847e1" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Tue Mar 04 14:28:33 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Mar 04 16:35:10 2008 -0800" }, "message": "vfs: fix NULL pointer dereference in fsync_buffers_list()\n\nFix NULL pointer dereference in fsync_buffers_list() introduced by recent fix\nof races in private_list handling. Since bh-\u003eb_assoc_map has been cleared in\n__remove_assoc_queue() we should really use original value stored in the\n\u0027mapping\u0027 variable.\n\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": "78a4a50a86b0a54f7ecbc164267b6c762760254c", "tree": "a50503b14fc4f21abdcc0e2c6e49380029bb5e1c", "parents": [ "64e6269071fb1888e5ddc9ad557368cc5fa4f538" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Fri Feb 29 22:02:31 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Mar 03 10:47:13 2008 -0800" }, "message": "docbook: fix filesystems.tmpl source files\n\nFix docbook problems in filesystems.tmpl.\nThese cause the generated docbook to be incorrect.\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "535ee2fbf79ab52d26bce3d2e127c9007503581e", "tree": "9d7cdbd98e481ec2fb6d5ff6eebf65f4d422ec8c", "parents": [ "f6f21c81464ce52dbeec921bdc2e8b288c491920" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Fri Feb 08 04:21:59 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:42 2008 -0800" }, "message": "buffer_head: fix private_list handling\n\nThere are two possible races in handling of private_list in buffer cache.\n\n1) When fsync_buffers_list() processes a private_list, it clears\n b_assoc_mapping and moves buffer to its private list. Now\n drop_buffers() comes, sees a buffer is on list so it calls\n __remove_assoc_queue() which complains about b_assoc_mapping being\n cleared (as it cannot propagate possible IO error). This race has been\n actually observed in the wild.\n\n2) When fsync_buffers_list() processes a private_list,\n mark_buffer_dirty_inode() can be called on bh which is already on the\n private list of fsync_buffers_list(). As buffer is on some list (note\n that the check is performed without private_lock), it is not readded to\n the mapping\u0027s private_list and after fsync_buffers_list() finishes, we\n have a dirty buffer which should be on private_list but it isn\u0027t. This\n race has not been reported, probably because most (but not all) callers\n of mark_buffer_dirty_inode() hold i_mutex and thus are serialized with\n fsync().\n\nFix these issues by not clearing b_assoc_map when fsync_buffers_list()\nmoves buffer to a dedicated list and by reinserting buffer in private_list\nwhen it is found dirty after we have submitted buffer for IO. We also\nchange the tests whether a buffer is on a private list from\n!list_empty(\u0026bh-\u003eb_assoc_buffers) to bh-\u003eb_assoc_map so that they are\nsingle word reads and hence lockless checks are safe.\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fc9b52cd8f5f459b88adcf67c47668425ae31a78", "tree": "c29924eaf60d2e73641bf11fa906a23fa81f46c9", "parents": [ "75acb9cd2ef0bbb463098fdd40cbcdda79d45fa3" ], "author": { "name": "Harvey Harrison", "email": "harvey.harrison@gmail.com", "time": "Fri Feb 08 04:19:52 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:31 2008 -0800" }, "message": "fs: remove fastcall, it is always empty\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Harvey Harrison \u003charvey.harrison@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": "9db5579be4bb5320c3248f6acf807aedf05ae143", "tree": "fde09bbeb427946b30d2e0fb6b00494a42488052", "parents": [ "daeb51e62cacde31c8245866e1096ff79a0c83fe" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Fri Feb 08 04:19:49 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:30 2008 -0800" }, "message": "rewrite rd\n\nThis is a rewrite of the ramdisk block device driver.\n\nThe old one is really difficult because it effectively implements a block\ndevice which serves data out of its own buffer cache. It relies on the dirty\nbit being set, to pin its backing store in cache, however there are non\ntrivial paths which can clear the dirty bit (eg. try_to_free_buffers()),\nwhich had recently lead to data corruption. And in general it is completely\nwrong for a block device driver to do this.\n\nThe new one is more like a regular block device driver. It has no idea about\nvm/vfs stuff. It\u0027s backing store is similar to the buffer cache (a simple\nradix-tree of pages), but it doesn\u0027t know anything about page cache (the pages\nin the radix tree are not pagecache pages).\n\nThere is one slight downside -- direct block device access and filesystem\nmetadata access goes through an extra copy and gets stored in RAM twice.\nHowever, this downside is only slight, because the real buffercache of the\ndevice is now reclaimable (because we\u0027re not playing crazy games with it), so\nunder memory intensive situations, footprint should effectively be the same --\nmaybe even a slight advantage to the new driver because it can also reclaim\nbuffer heads.\n\nThe fact that it now goes through all the regular vm/fs paths makes it\nmuch more useful for testing, too.\n\n text data bss dec hex filename\n 2837 849 384 4070 fe6 drivers/block/rd.o\n 3528 371 12 3911 f47 drivers/block/brd.o\n\nText is larger, but data and bss are smaller, making total size smaller.\n\nA few other nice things about it:\n- Similar structure and layout to the new loop device handlinag.\n- Dynamic ramdisk creation.\n- Runtime flexible buffer head size (because it is no longer part of the\n ramdisk code).\n- Boot / load time flexible ramdisk size, which could easily be extended\n to a per-ramdisk runtime changeable size (eg. with an ioctl).\n- Can use highmem for the backing store.\n\n[akpm@linux-foundation.org: fix build]\n[byron.bbradley@gmail.com: make rd_size non-static]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Byron Bradley \u003cbyron.bbradley@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": "b98938c373117043598002f197200d7ed08acd49", "tree": "da9356af43085db78cafec82505c3341d6291201", "parents": [ "aec2c3ed01ed54d0cdf7f6b7c4be217c045ac5ea" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Feb 04 22:28:36 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:14 2008 -0800" }, "message": "bufferhead: revert constructor removal\n\nThe constructor for buffer_head slabs was removed recently. We need the\nconstructor back in slab defrag in order to insure that slab objects always\nhave a definite state even before we allocated them.\n\nI think we mistakenly merged the removal of the constuctor into a cleanup\npatch. You (ie: akpm) had a test that showed that the removal of the\nconstructor led to a small regression. The prior state makes things easier\nfor slab defrag.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "eebd2aa355692afaf9906f62118620f1a1c19dbb", "tree": "207eead3a736963c3e50942038c463f2f611ccce", "parents": [ "b98348bdd08dc4ec11828aa98a78edde15c53cfa" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Feb 04 22:28:29 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:13 2008 -0800" }, "message": "Pagecache zeroing: zero_user_segment, zero_user_segments and zero_user\n\nSimplify page cache zeroing of segments of pages through 3 functions\n\nzero_user_segments(page, start1, end1, start2, end2)\n\n Zeros two segments of the page. It takes the position where to\n start and end the zeroing which avoids length calculations and\n\tmakes code clearer.\n\nzero_user_segment(page, start, end)\n\n Same for a single segment.\n\nzero_user(page, start, length)\n\n Length variant for the case where we know the length.\n\nWe remove the zero_user_page macro. Issues:\n\n1. Its a macro. Inline functions are preferable.\n\n2. The KM_USER0 macro is only defined for HIGHMEM.\n\n Having to treat this special case everywhere makes the\n code needlessly complex. The parameter for zeroing is always\n KM_USER0 except in one single case that we open code.\n\nAvoiding KM_USER0 makes a lot of code not having to be dealing\nwith the special casing for HIGHMEM anymore. Dealing with\nkmap is only necessary for HIGHMEM configurations. In those\nconfigurations we use KM_USER0 like we do for a series of other\nfunctions defined in highmem.h.\n\nSince KM_USER0 is depends on HIGHMEM the existing zero_user_page\nfunction could not be a macro. zero_user_* functions introduced\nhere can be be inline because that constant is not used when these\nfunctions are called.\n\nAlso extract the flushing of the caches to be outside of the kmap.\n\n[akpm@linux-foundation.org: fix nfs and ntfs build]\n[akpm@linux-foundation.org: fix ntfs build some more]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nCc: Michael Halcrow \u003cmhalcrow@us.ibm.com\u003e\nCc: \u003clinux-ext4@vger.kernel.org\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nCc: \"J. Bruce Fields\" \u003cbfields@fieldses.org\u003e\nCc: Anton Altaparmakov \u003caia21@cantab.net\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nCc: David Chinner \u003cdgc@sgi.com\u003e\nCc: Michael Halcrow \u003cmhalcrow@us.ibm.com\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "389d1b083c767a360ec84b27a95da06244becec8", "tree": "a315c892f615545fd0ce72f7e0d660f5772fb4b2", "parents": [ "bb4f397a1a7f2330cb173233599aa159f5780f58" ], "author": { "name": "Aneesh Kumar K.V", "email": "aneesh.kumar@linux.vnet.ibm.com", "time": "Mon Jan 28 23:58:26 2008 -0500" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Mon Jan 28 23:58:26 2008 -0500" }, "message": "Add buffer head related helper functions\n\nAdd buffer head related helper function bh_uptodate_or_lock and\nbh_submit_read which can be used by file system\n\nSigned-off-by: Aneesh Kumar K.V \u003caneesh.kumar@linux.vnet.ibm.com\u003e\n" }, { "commit": "efdc31319d43050a5742fb690b1a4beb68092a94", "tree": "697e9db6db5675c46d559d8982e34a1f8df4f3d1", "parents": [ "cfa76f024f7c9e65169425804e5b32e71f66d0ee" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun Oct 21 06:57:41 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Oct 21 08:54:05 2007 -0700" }, "message": "nobh: nobh_write_end fix\n\nThis path mustn\u0027t have been tested :( I did attempt to exercise it\nby injecting failures here, but I suspect PageMappedToDisk may have\nbeen getting in the way. Will need more of a look, although I think\nnobh mode is OK for an -rc1 (it shouldn\u0027t eat anyone\u0027s data).\n\nCommit 03158cd7eb3374843de68421142ca5900df845d9 (\"fs: restore nobh\")\nintrocduced a NULL deref. Spotted by the Coverity checker.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1f7decf6d9f06dac008b8d66935c0c3b18e564f9", "tree": "e0f8430bd4e3ed5425aa55b7fa28483341bbfe87", "parents": [ "08d8e9749e7f0435ba4683b620e8d30d59276b4c" ], "author": { "name": "Fengguang Wu", "email": "wfg@mail.ustc.edu.cn", "time": "Tue Oct 16 23:30:42 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:43:02 2007 -0700" }, "message": "writeback: remove pages_skipped accounting in __block_write_full_page()\n\nMiklos Szeredi \u003cmiklos@szeredi.hu\u003e and me identified a writeback bug:\n\n\u003e The following strange behavior can be observed:\n\u003e\n\u003e 1. large file is written\n\u003e 2. after 30 seconds, nr_dirty goes down by 1024\n\u003e 3. then for some time (\u003c 30 sec) nothing happens (disk idle)\n\u003e 4. then nr_dirty again goes down by 1024\n\u003e 5. repeat from 3. until whole file is written\n\u003e\n\u003e So basically a 4Mbyte chunk of the file is written every 30 seconds.\n\u003e I\u0027m quite sure this is not the intended behavior.\n\nIt can be produced by the following test scheme:\n\n# cat bin/test-writeback.sh\ngrep nr_dirty /proc/vmstat\necho 1 \u003e /proc/sys/fs/inode_debug\ndd if\u003d/dev/zero of\u003d/var/x bs\u003d1K count\u003d204800\u0026\nwhile true; do grep nr_dirty /proc/vmstat; sleep 1; done\n\n# bin/test-writeback.sh\nnr_dirty 19207\nnr_dirty 19207\nnr_dirty 30924\n204800+0 records in\n204800+0 records out\n209715200 bytes (210 MB) copied, 1.58363 seconds, 132 MB/s\nnr_dirty 47150\nnr_dirty 47141\nnr_dirty 47142\nnr_dirty 47142\nnr_dirty 47142\nnr_dirty 47142\nnr_dirty 47205\nnr_dirty 47214\nnr_dirty 47214\nnr_dirty 47214\nnr_dirty 47214\nnr_dirty 47214\nnr_dirty 47215\nnr_dirty 47216\nnr_dirty 47216\nnr_dirty 47216\nnr_dirty 47154\nnr_dirty 47143\nnr_dirty 47143\nnr_dirty 47143\nnr_dirty 47143\nnr_dirty 47143\nnr_dirty 47142\nnr_dirty 47142\nnr_dirty 47142\nnr_dirty 47142\nnr_dirty 47134\nnr_dirty 47134\nnr_dirty 47135\nnr_dirty 47135\nnr_dirty 47135\nnr_dirty 46097 \u003c\u003d\u003d -1038\nnr_dirty 46098\nnr_dirty 46098\nnr_dirty 46098\n[...]\nnr_dirty 46091\nnr_dirty 46092\nnr_dirty 46092\nnr_dirty 45069 \u003c\u003d\u003d -1023\nnr_dirty 45056\nnr_dirty 45056\nnr_dirty 45056\n[...]\nnr_dirty 37822\nnr_dirty 36799 \u003c\u003d\u003d -1023\n[...]\nnr_dirty 36781\nnr_dirty 35758 \u003c\u003d\u003d -1023\n[...]\nnr_dirty 34708\nnr_dirty 33672 \u003c\u003d\u003d -1024\n[...]\nnr_dirty 33692\nnr_dirty 32669 \u003c\u003d\u003d -1023\n\n% ls -li /var/x\n847824 -rw-r--r-- 1 root root 200M 2007-08-12 04:12 /var/x\n\n% dmesg|grep 847824 # generated by a debug printk\n[ 529.263184] redirtied inode 847824 line 548\n[ 564.250872] redirtied inode 847824 line 548\n[ 594.272797] redirtied inode 847824 line 548\n[ 629.231330] redirtied inode 847824 line 548\n[ 659.224674] redirtied inode 847824 line 548\n[ 689.219890] redirtied inode 847824 line 548\n[ 724.226655] redirtied inode 847824 line 548\n[ 759.198568] redirtied inode 847824 line 548\n\n# line 548 in fs/fs-writeback.c:\n543 if (wbc-\u003epages_skipped !\u003d pages_skipped) {\n544 /*\n545 * writeback is not making progress due to locked\n546 * buffers. Skip this inode for now.\n547 */\n548 redirty_tail(inode);\n549 }\n\nMore debug efforts show that __block_write_full_page()\nnever has the chance to call submit_bh() for that big dirty file:\nthe buffer head is *clean*. So basicly no page io is issued by\n__block_write_full_page(), hence pages_skipped goes up.\n\nAlso the comment in generic_sync_sb_inodes():\n\n544 /*\n545 * writeback is not making progress due to locked\n546 * buffers. Skip this inode for now.\n547 */\n\nand the comment in __block_write_full_page():\n\n1713 /*\n1714 * The page was marked dirty, but the buffers were\n1715 * clean. Someone wrote them back by hand with\n1716 * ll_rw_block/submit_bh. A rare case.\n1717 */\n\ndo not quite agree with each other. The page writeback should be skipped for\n\u0027locked buffer\u0027, but here it is \u0027clean buffer\u0027!\n\nThis patch fixes this bug. Though I\u0027m not sure why __block_write_full_page()\nis called only to do nothing and who actually issued the writeback for us.\n\nThis is the two possible new behaviors after the patch:\n\n1) pretty nice: wait 30s and write ALL:)\n2) not so good:\n\t- during the dd: ~16M\n\t- after 30s: ~4M\n\t- after 5s: ~4M\n\t- after 5s: ~176M\n\nThe next patch will fix case (2).\n\nCc: David Chinner \u003cdgc@sgi.com\u003e\nCc: Ken Chen \u003ckenchen@google.com\u003e\nSigned-off-by: Fengguang Wu \u003cwfg@mail.ustc.edu.cn\u003e\nSigned-off-by: David Chinner \u003cdgc@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c9e51e4180696aa67915ec5665e4ec74125565de", "tree": "d66e1427b16e56bc7da0dfb583a6d8edb55a2c3e", "parents": [ "b2e8fb6efa209c82203c79b491b5bc952d44aa57" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 16 23:25:47 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:45 2007 -0700" }, "message": "mm: count reclaimable pages per BDI\n\nCount per BDI reclaimable pages; nr_reclaimable \u003d nr_dirty + nr_unstable.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e12ba74d8ff3e2f73a583500d7095e406df4d093", "tree": "a0d3385b65f0b3e1e00b0bbf11b75e7538a93edb", "parents": [ "c361be55b3128474aa66d31092db330b07539103" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Oct 16 01:25:52 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:00 2007 -0700" }, "message": "Group short-lived and reclaimable kernel allocations\n\nThis patch marks a number of allocations that are either short-lived such as\nnetwork buffers or are reclaimable such as inode allocations. When something\nlike updatedb is called, long-lived and unmovable kernel allocations tend to\nbe spread throughout the address space which increases fragmentation.\n\nThis patch groups these allocations together as much as possible by adding a\nnew MIGRATE_TYPE. The MIGRATE_RECLAIMABLE type is for allocations that can be\nreclaimed on demand, but not moved. i.e. they can be migrated by deleting\nthem and re-reading the information from elsewhere.\n\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "03158cd7eb3374843de68421142ca5900df845d9", "tree": "5e1bfc1f981651e7f7d7cf30afd15d7bd96b2a57", "parents": [ "b6af1bcd8720cb3062c8c4d4c8ba02bee10ff03f" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:58 2007 -0700" }, "message": "fs: restore nobh\n\nImplement nobh in new aops. This is a bit tricky. FWIW, nobh_truncate is\nnow implemented in a way that does not create blocks in sparse regions,\nwhich is a silly thing for it to have been doing (isn\u0027t it?)\n\next2 survives fsx and fsstress. jfs is converted as well... ext3\nshould be easy to do (but not done yet).\n\n[akpm@linux-foundation.org: coding-style fixes]\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a20fa20c549ed569885d871f689a59cfd2f6ff77", "tree": "bc6f7119cec83032eb43c27d6ec7bbbebd2fdddb", "parents": [ "f7557e8f7ff785d6c2b5bc914cd1675314ff0fcf" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:15 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:56 2007 -0700" }, "message": "With reiserfs no longer using the weird generic_cont_expand, remove it completely.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "89e107877b65bf6eff1d63a1302dee9a091586f5", "tree": "8a120a04c46f19229d1cf9b9c546f1818cf84c44", "parents": [ "7765ec26ae1c01bb29bedf910e4efcced8cc81d2" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:07 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "fs: new cont helpers\n\nRework the generic block \"cont\" routines to handle the new aops. Supporting\ncont_prepare_write would take quite a lot of code to support, so remove it\ninstead (and we later convert all filesystems to use it).\n\nwrite_begin gets passed AOP_FLAG_CONT_EXPAND when called from\ngeneric_cont_expand, so filesystems can avoid the old hacks they used.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "afddba49d18f346e5cc2938b6ed7c512db18ca68", "tree": "4726e3d3b0e9e8e5b5d3b2b0cccb36446bbdf3ca", "parents": [ "637aff46f94a754207c80c8c64bf1b74f24b967d" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "fs: introduce write_begin, write_end, and perform_write aops\n\nThese are intended to replace prepare_write and commit_write with more\nflexible alternatives that are also able to avoid the buffered write\ndeadlock problems efficiently (which prepare_write is unable to do).\n\n[mark.fasheh@oracle.com: API design contributions, code review and fixes]\n[akpm@linux-foundation.org: various fixes]\n[dmonakhov@sw.ru: new aop block_write_begin fix]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nSigned-off-by: Dmitriy Monakhov \u003cdmonakhov@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "637aff46f94a754207c80c8c64bf1b74f24b967d", "tree": "837fb3196236998c3c3ae44762ed3167ef0256f4", "parents": [ "2f718ffc16c43a435d12919c75dbfad518abd056" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:25:00 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:55 2007 -0700" }, "message": "fs: fix data-loss on error\n\nNew buffers against uptodate pages are simply be marked uptodate, while the\nbuffer_new bit remains set. This causes error-case code to zero out parts of\nthose buffers because it thinks they contain stale data: wrong, they are\nactually uptodate so this is a data loss situation.\n\nFix this by actually clearning buffer_new and marking the buffer dirty. It\nmakes sense to always clear buffer_new before setting a buffer uptodate.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a4b0672db3a698d0684ee6e54f44e2e162a3da1b", "tree": "d53c52b251856520b0fd02969bfcdd4b5d332da6", "parents": [ "68671f35fe8d785277118a333c88768a4f894917" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 16 01:24:48 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:54 2007 -0700" }, "message": "fs: fix nobh error handling\n\nnobh mode error handling is not just pretty slack, it\u0027s wrong.\n\nOne cannot zero out the whole page to ensure new blocks are zeroed, because\nit just brings the whole page \"uptodate\" with zeroes even if that may not\nbe the correct uptodate data. Also, other parts of the page may already\ncontain dirty data which would get lost by zeroing it out. Thirdly, the\nwriteback of zeroes to the new blocks will also erase existing blocks. All\nthese conditions are pagecache and/or filesystem corruption.\n\nThe problem comes about because we didn\u0027t keep track of which buffers\nactually are new or old. However it is not enough just to keep only this\nstate, because at the point we start dirtying parts of the page (new\nblocks, with zeroes), the handling of IO errors becomes impossible without\nbuffers because the page may only be partially uptodate, in which case the\npage flags allone cannot capture the state of the parts of the page.\n\nSo allocate all buffers for the page upfront, but leave them unattached so\nthat they don\u0027t pick up any other references and can be freed when we\u0027re\ndone. If the error path is hit, then zero the new buffers as the regular\nbuffer path does, then attach the buffers to the page so that it can\nactually be written out correctly and be subject to the normal IO error\nhandling paths.\n\nAs an upshot, we save 1K of kernel stack on ia64 or powerpc 64K page\nsystems.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "68671f35fe8d785277118a333c88768a4f894917", "tree": "50cb5a378db1b021c2ec3573388af3480df49791", "parents": [ "ef8b4520bd9f8294ffce9abd6158085bde5dc902" ], "author": { "name": "Dmitry Monakhov", "email": "dmonakhov@openvz.org", "time": "Tue Oct 16 01:24:47 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:53 2007 -0700" }, "message": "mm: add end_buffer_read helper function\n\nMove duplicated code from end_buffer_read_XXX methods to separate helper\nfunction.\n\nSigned-off-by: Dmitry Monakhov \u003cdmonakhov@openvz.org\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6712ecf8f648118c3363c142196418f89a510b90", "tree": "347d39a7d5a7ed96d3b1afecd28de2a0f98b98c9", "parents": [ "5bb23a688b2de23d7765a1dd439d89c038378978" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Thu Sep 27 12:47:43 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@carl.home.kernel.dk", "time": "Wed Oct 10 09:25:57 2007 +0200" }, "message": "Drop \u0027size\u0027 argument from bio_endio and bi_end_io\n\nAs bi_end_io is only called once when the reqeust is complete,\nthe \u0027size\u0027 argument is now redundant. Remove it.\n\nNow there is no need for bio_endio to subtract the size completed\nfrom bi_size. So don\u0027t do that either.\n\nWhile we are at it, change bi_end_io to return void.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "1833633803c7ef4d8f09877d3f1549cbd252f477", "tree": "ce69505de705701f838bd77c6b6b6bc18529bed0", "parents": [ "e228929bc257b963523ed75aa60d2ad77ece2189" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Fri Jul 20 00:31:45 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jul 20 08:44:19 2007 -0700" }, "message": "fix some conversion overflows\n\nFix page index to offset conversion overflows in buffer layer, ecryptfs,\nand ocfs2.\n\nIt would be nice to convert the whole tree to page_offset, but for now\njust fix the bugs.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Michael Halcrow \u003cmhalcrow@us.ibm.com\u003e\nCc: Mark Fasheh \u003cmark.fasheh@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": "5417169026c3df151adf5a65eb061278b0a72e69", "tree": "e4872a4243e12fe931ff6ac789df181b579b884c", "parents": [ "589f1e81bde732dd0b1bc5d01b6bddd4bcb4527b" ], "author": { "name": "David Chinner", "email": "dgc@sgi.com", "time": "Thu Jul 19 17:39:55 2007 +1000" }, "committer": { "name": "Tim Shimmin", "email": "tes@chook.melbourne.sgi.com", "time": "Thu Jul 19 19:50:50 2007 +1000" }, "message": "[FS] Implement block_page_mkwrite.\n\nMany filesystems need a -\u003epage-mkwrite callout to correctly\nset up pages that have been written to by mmap. This is especially\nimportant when mmap is writing into holes as it allows filesystems\nto correctly account for and allocate space before the mmap\nwrite is allowed to proceed.\n\nProtection against truncate races is provided by locking the page\nand checking to see whether the page mapping is correct and whether\nit is beyond EOF so we don\u0027t end up allowing allocations beyond\nthe current EOF or changing EOF as a result of a mmap write.\n\nSGI-PV: 940392\nSGI-Modid: 2.6.x-xfs-melb:linux:29146a\n\nSigned-off-by: David Chinner \u003cdgc@sgi.com\u003e\nSigned-off-by: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Tim Shimmin \u003ctes@sgi.com\u003e\n" }, { "commit": "787d2214c19bcc9b6ac48af0ce098277a801eded", "tree": "a040604fdf9620a66dc83a0cde4f2140e2ec25b3", "parents": [ "a1ed3dda0ad181532f1e0f0d548067fb9fdddac4" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Jul 17 04:03:34 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "fs: introduce some page/buffer invariants\n\nIt is a bug to set a page dirty if it is not uptodate unless it has\nbuffers. If the page has buffers, then the page may be dirty (some buffers\ndirty) but not uptodate (some buffers not uptodate). The exception to this\nrule is if the set_page_dirty caller is racing with truncate or invalidate.\n\nA buffer can not be set dirty if it is not uptodate.\n\nIf either of these situations occurs, it indicates there could be some data\nloss problem. Some of these warnings could be a harmless one where the\npage or buffer is set uptodate immediately after it is dirtied, however we\nshould fix those up, and enforce this ordering.\n\nBring the order of operations for truncate into line with those of\ninvalidate. This will prevent a page from being able to go !uptodate while\nwe\u0027re holding the tree_lock, which is probably a good thing anyway.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5ad333eb66ff1e52a87639822ae088577669dcf9", "tree": "addae6bbd19585f19328f309924d06d647e8f2b7", "parents": [ "7e63efef857575320fb413fbc3d0ee704b72845f" ], "author": { "name": "Andy Whitcroft", "email": "apw@shadowen.org", "time": "Tue Jul 17 04:03:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:22:59 2007 -0700" }, "message": "Lumpy Reclaim V4\n\nWhen we are out of memory of a suitable size we enter reclaim. The current\nreclaim algorithm targets pages in LRU order, which is great for fairness at\norder-0 but highly unsuitable if you desire pages at higher orders. To get\npages of higher order we must shoot down a very high proportion of memory;\n\u003e95% in a lot of cases.\n\nThis patch set adds a lumpy reclaim algorithm to the allocator. It targets\ngroups of pages at the specified order anchored at the end of the active and\ninactive lists. This encourages groups of pages at the requested orders to\nmove from active to inactive, and active to free lists. This behaviour is\nonly triggered out of direct reclaim when higher order pages have been\nrequested.\n\nThis patch set is particularly effective when utilised with an\nanti-fragmentation scheme which groups pages of similar reclaimability\ntogether.\n\nThis patch set is based on Peter Zijlstra\u0027s lumpy reclaim V2 patch which forms\nthe foundation. Credit to Mel Gorman for sanitity checking.\n\nMel said:\n\n The patches have an application with hugepage pool resizing.\n\n When lumpy-reclaim is used used with ZONE_MOVABLE, the hugepages pool can\n be resized with greater reliability. Testing on a desktop machine with 2GB\n of RAM showed that growing the hugepage pool with ZONE_MOVABLE on it\u0027s own\n was very slow as the success rate was quite low. Without lumpy-reclaim,\n each attempt to grow the pool by 100 pages would yield 1 or 2 hugepages.\n With lumpy-reclaim, getting 40 to 70 hugepages on each attempt was typical.\n\n[akpm@osdl.org: ia64 pfn_to_nid fixes and loop cleanup]\n[bunk@stusta.de: static declarations for internal functions]\n[a.p.zijlstra@chello.nl: initial lumpy V2 implementation]\nSigned-off-by: Andy Whitcroft \u003capw@shadowen.org\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nAcked-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Bob Picco \u003cbob.picco@hp.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "769848c03895b63e5662eb7e4ec8c4866f7d0183", "tree": "8911c7c312c8b8b172795fa2874c8162e1d3d15a", "parents": [ "a32ea1e1f925399e0d81ca3f7394a44a6dafa12c" ], "author": { "name": "Mel Gorman", "email": "mel@csn.ul.ie", "time": "Tue Jul 17 04:03:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:22:59 2007 -0700" }, "message": "Add __GFP_MOVABLE for callers to flag allocations from high memory that may be migrated\n\nIt is often known at allocation time whether a page may be migrated or not.\nThis patch adds a flag called __GFP_MOVABLE and a new mask called\nGFP_HIGH_MOVABLE. Allocations using the __GFP_MOVABLE can be either migrated\nusing the page migration mechanism or reclaimed by syncing with backing\nstorage and discarding.\n\nAn API function very similar to alloc_zeroed_user_highpage() is added for\n__GFP_MOVABLE allocations called alloc_zeroed_user_highpage_movable(). The\nflags used by alloc_zeroed_user_highpage() are not changed because it would\nchange the semantics of an existing API. After this patch is applied there\nare no in-kernel users of alloc_zeroed_user_highpage() so it probably should\nbe marked deprecated if this patch is merged.\n\nNote that this patch includes a minor cleanup to the use of __GFP_ZERO in\nshmem.c to keep all flag modifications to inode-\u003emapping in the\nshmem_dir_alloc() helper function. This clean-up suggestion is courtesy of\nHugh Dickens.\n\nAdditional credit goes to Christoph Lameter and Linus Torvalds for shaping the\nconcept. Credit to Hugh Dickens for catching issues with shmem swap vector\nand ramfs allocations.\n\n[akpm@linux-foundation.org: build fix]\n[hugh@veritas.com: __GFP_ZERO cleanup]\nSigned-off-by: Mel Gorman \u003cmel@csn.ul.ie\u003e\nCc: Andy Whitcroft \u003capw@shadowen.org\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4a2d44590a603be292addce9c263982043416666", "tree": "93b15a75398334c1632c9d8aadd2aadfc3256e18", "parents": [ "c5c061b8f9726bc2c25e19dec227933a13d1e6b7" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Sun Jul 15 23:40:31 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:45 2007 -0700" }, "message": "buffer: kill old incorrect comment\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ff1be9ad61e3e17ba83702d8ed0b534e5b8ee15c", "tree": "ce6f85896cf04d26e027ef6b24c60e7b28508faf", "parents": [ "5f663404b27fa72546a592c5c932b0605b9c93a6" ], "author": { "name": "OGAWA Hirofumi", "email": "hirofumi@mail.parknet.co.jp", "time": "Sun May 20 23:39:40 2007 +0900" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 21 09:15:32 2007 -0700" }, "message": "Fix \"fs: convert core functions to zero_user_page\"\n\nThe bug was introduced by 01f2705daf5a36208e69d7cf95db9c330f843af6.\nIt misses to convert the first argument, it should be \"new_page\".\n\nThis became a cause of fatfs corruption.\n\nCc: Nate Diller \u003cnate.diller@gmail.com\u003e\nSigned-off-by: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ea125892a17f43919c726777ed1e4929d41e7984", "tree": "4d349a456bca4005d021d10c063ecb79c42ff4bc", "parents": [ "8d98a690f58e0d6ecf424b7ca84488475cf87bd9" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed May 16 22:11:21 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu May 17 05:23:06 2007 -0700" }, "message": "Fix page allocation flags in grow_dev_page()\n\ngrow_dev_page() simply passes GFP_NOFS to find_or_create_page. This means\nthe allocation of radix tree nodes is done with GFP_NOFS and the allocation\nof a new page is done using GFP_NOFS.\n\nThe mapping has a flags field that contains the necessary allocation flags\nfor the page cache allocation. These need to be consulted in order to get\nDMA and HIGHMEM allocations etc right. And yes a blockdev could be\nallowing Highmem allocations if its a ramdisk.\n\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a35afb830f8d71ec211531aeb9a621b09a2efb39", "tree": "198280081e1f8b2f6c450742a5075cc7904a3d58", "parents": [ "5577bd8a85c8b7643a241789b14fafa9c8a6c7db" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed May 16 22:10:57 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu May 17 05:23:04 2007 -0700" }, "message": "Remove SLAB_CTOR_CONSTRUCTOR\n\nSLAB_CTOR_CONSTRUCTOR is always specified. No point in checking it.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nCc: Michael Halcrow \u003cmhalcrow@us.ibm.com\u003e\nCc: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nCc: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: David Woodhouse \u003cdwmw2@infradead.org\u003e\nCc: Dave Kleikamp \u003cshaggy@austin.ibm.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nCc: \"J. Bruce Fields\" \u003cbfields@fieldses.org\u003e\nCc: Anton Altaparmakov \u003caia21@cantab.net\u003e\nCc: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Jan Kara \u003cjack@ucw.cz\u003e\nCc: David Chinner \u003cdgc@sgi.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8bb7844286fb8c9fce6f65d8288aeb09d03a5e0d", "tree": "f4e305edaedbde05774bb1e4acd89a9475661d2e", "parents": [ "f37bc2712b54ec641e0c0c8634f1a4b61d9956c0" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Wed May 09 02:35:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:56 2007 -0700" }, "message": "Add suspend-related notifications for CPU hotplug\n\nSince nonboot CPUs are now disabled after tasks and devices have been\nfrozen and the CPU hotplug infrastructure is used for this purpose, we need\nspecial CPU hotplug notifications that will help the CPU-hotplug-aware\nsubsystems distinguish normal CPU hotplug events from CPU hotplug events\nrelated to a system-wide suspend or resume operation in progress. This\npatch introduces such notifications and causes them to be used during\nsuspend and resume transitions. It also changes all of the\nCPU-hotplug-aware subsystems to take these notifications into consideration\n(for now they are handled in the same way as the corresponding \"normal\"\nones).\n\n[oleg@tv-sign.ru: cleanups]\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nCc: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "01f2705daf5a36208e69d7cf95db9c330f843af6", "tree": "2d2c7a042c2466ed985f6e0950450c099f02725f", "parents": [ "38a23e311b6cd389b9d8af2ea6c28c8cffbe581c" ], "author": { "name": "Nate Diller", "email": "nate.diller@gmail.com", "time": "Wed May 09 02:35:07 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:55 2007 -0700" }, "message": "fs: convert core functions to zero_user_page\n\nIt\u0027s very common for file systems to need to zero part or all of a page,\nthe simplist way is just to use kmap_atomic() and memset(). There\u0027s\nactually a library function in include/linux/highmem.h that does exactly\nthat, but it\u0027s confusingly named memclear_highpage_flush(), which is\ndescriptive of *how* it does the work rather than what the *purpose* is.\nSo this patchset renames the function to zero_user_page(), and calls it\nfrom the various places that currently open code it.\n\nThis first patch introduces the new function call, and converts all the\ncore kernel callsites, both the open-coded ones and the old\nmemclear_highpage_flush() ones. Following this patch is a series of\nconversions for each file system individually, per AKPM, and finally a\npatch deprecating the old call. The diffstat below shows the entire\npatchset.\n\n[akpm@linux-foundation.org: fix a few things]\nSigned-off-by: Nate Diller \u003cnate.diller@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": "e63340ae6b6205fef26b40a75673d1c9c0c8bb90", "tree": "8d3212705515edec73c3936bb9e23c71d34a7b41", "parents": [ "04c9167f91e309c9c4ea982992aa08e83b2eb42e" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Tue May 08 00:28:08 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:07 2007 -0700" }, "message": "header cleaning: don\u0027t include smp_lock.h when not used\n\nRemove includes of \u003clinux/smp_lock.h\u003e where it is not used/needed.\nSuggested by Al Viro.\n\nBuilds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,\nsparc64, and arm (all 59 defconfigs).\n\nSigned-off-by: 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": "7e4c3690b07f04b1942c39db358a5c8a72831daa", "tree": "70d8773f612ed3df02c738b678edef64dd5ddaf7", "parents": [ "3e9f45bd18191bbd05468b19b7064b8da8262aba" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Tue May 08 00:23:27 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:14:57 2007 -0700" }, "message": "block_write_full_page(): report ENOSPC\n\nblock_write_full_page() forgot to propagate ENPSOC into the address_space.\n\nCc: Guillaume Chazarain \u003cguichaz@yahoo.fr\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "50953fe9e00ebbeffa032a565ab2f08312d51a87", "tree": "9f95f56f0b51600959a76cd88ce17f6e9c7a98a3", "parents": [ "4b1d89290b62bb2db476c94c82cf7442aab440c8" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun May 06 14:50:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:57 2007 -0700" }, "message": "slab allocators: Remove SLAB_DEBUG_INITIAL flag\n\nI have never seen a use of SLAB_DEBUG_INITIAL. It is only supported by\nSLAB.\n\nI think its purpose was to have a callback after an object has been freed\nto verify that the state is the constructor state again? The callback is\nperformed before each freeing of an object.\n\nI would think that it is much easier to check the object state manually\nbefore the free. That also places the check near the code object\nmanipulation of the object.\n\nAlso the SLAB_DEBUG_INITIAL callback is only performed if the kernel was\ncompiled with SLAB debugging on. If there would be code in a constructor\nhandling SLAB_DEBUG_INITIAL then it would have to be conditional on\nSLAB_DEBUG otherwise it would just be dead code. But there is no such code\nin the kernel. I think SLUB_DEBUG_INITIAL is too problematic to make real\nuse of, difficult to understand and there are easier ways to accomplish the\nsame effect (i.e. add debug code before kfree).\n\nThere is a related flag SLAB_CTOR_VERIFY that is frequently checked to be\nclear in fs inode caches. Remove the pointless checks (they would even be\npointless without removeal of SLAB_DEBUG_INITIAL) from the fs constructors.\n\nThis is the last slab flag that SLUB did not support. Remove the check for\nunimplemented flags from SLUB.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f9a14399aea13830d8af6798a53207bb0a900945", "tree": "b2501f1ce1d2a4564cd9a29c55705e524f594ad1", "parents": [ "f98393a64ca1392130724c3acb4e3f325801d2b6" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Sun May 06 14:49:55 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:55 2007 -0700" }, "message": "mm: optimize kill_bdev()\n\nRemove duplicate work in kill_bdev().\n\nIt currently invalidates and then truncates the bdev\u0027s mapping.\ninvalidate_mapping_pages() will opportunistically remove pages from the\nmapping. And truncate_inode_pages() will forcefully remove all pages.\n\nThe only thing truncate doesn\u0027t do is flush the bh lrus. So do that\nexplicitly. This avoids (very unlikely) but possible invalid lookup\nresults if the same bdev is quickly re-issued.\n\nIt also will prevent extreme kernel latencies which are observed when\nblockdevs which have a large amount of pagecache are unmounted, by avoiding\ninvalidate_mapping_pages() on that path. invalidate_mapping_pages() has no\ncond_resched (it can be called under spinlock), whereas truncate_inode_pages()\nhas one.\n\n[akpm@linux-foundation.org: restore nrpages\u003d\u003d0 optimisation]\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f98393a64ca1392130724c3acb4e3f325801d2b6", "tree": "b02838bdf84156ac923bb37b6cf5f5ed6aaa3d48", "parents": [ "0a27a14a62921b438bb6f33772690d345a089be6" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Sun May 06 14:49:54 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:55 2007 -0700" }, "message": "mm: remove destroy_dirty_buffers from invalidate_bdev()\n\nRemove the destroy_dirty_buffers argument from invalidate_bdev(), it hasn\u0027t\nbeen used in 6 years (so akpm says).\n\nfind * -name \\*.[ch] | xargs grep -l invalidate_bdev |\nwhile read file; do\n\tquilt add $file;\n\tsed -ie \u0027s/invalidate_bdev(\\([^,]*\\),[^)]*)/invalidate_bdev(\\1)/g\u0027 $file;\ndone\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3d67f2d7c0fb28b0eb6a6aa100b190526a971ad9", "tree": "eea6afc9610ba15218c9f03aa6091ec687a39577", "parents": [ "6fe6900e1e5b6fa9e5c59aa5061f244fe3f467e2" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sun May 06 14:49:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:51 2007 -0700" }, "message": "fs: buffer don\u0027t PageUptodate without page locked\n\n__block_write_full_page is calling SetPageUptodate without the page locked.\nThis is unusual, but not incorrect, as PG_writeback is still set.\n\nHowever the next patch will require that SetPageUptodate always be called with\nthe page locked. Simply don\u0027t bother setting the page uptodate in this case\n(it is unusual that the write path does such a thing anyway). Instead just\nleave it to the read side to bring the page uptodate when it notices that all\nbuffers are uptodate.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "57bf63d69cb6b7064e6fec5e83da4e1918168282", "tree": "506c623d4f756afb91af4ca150f6759d229d3b9f", "parents": [ "90675a27fa3eb0e97f1d040b183cceb44316e669" ], "author": { "name": "Dave Kleikamp", "email": "shaggy@linux.vnet.ibm.com", "time": "Tue Mar 06 01:42:12 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Mar 06 09:30:25 2007 -0800" }, "message": "[PATCH] fs: nobh_truncate_page() fix\n\nThis fixes a regression caused by 22c8ca78f20724676b6006232bf06cc3e9299539.\n\nnobh_prepare_write() no longer marks the page uptodate, so\nnobh_truncate_page() needs to do it.\n\nSigned-off-by: Dave Kleikamp \u003cshaggy@linux.vnet.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "22c8ca78f20724676b6006232bf06cc3e9299539", "tree": "2e92d122733505590c5df7906ac2590477b5806b", "parents": [ "955eff5acc8b8cd1c7d4eec0229c35eaabe013db" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Feb 20 13:58:09 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 20 17:10:15 2007 -0800" }, "message": "[PATCH] fs: fix nobh data leak\n\nnobh_prepare_write leaks data similarly to how simple_prepare_write did. Fix\nby not marking the page uptodate until nobh_commit_write time. Again, this\ncould break weird use-cases, but none appear to exist in the tree.\n\nWe can safely remove the set_page_dirty, because as the comment says,\nnobh_commit_write does set_page_dirty. If a filesystem wants to allocate\nbacking store for a page dirtied via mmap, page_mkwrite is the suggested\napproach.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ffda9d302267dbb7fc9bc38f6e4c1b3d61a536a9", "tree": "d3b95c0b7dc2edc602e71e2ff8389de79ea243ac", "parents": [ "bc56bba8f31bd99f350a5ebfd43d50f411b620c7" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Feb 20 13:57:54 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 20 17:10:13 2007 -0800" }, "message": "[PATCH] fs: fix __block_write_full_page error case buffer submission\n\nAndrew noticed that unlocking the page before submitting all buffers for\nwriteout could cause problems if the IO completes before we\u0027ve finished\nmessing around with the page buffers, and they subsequently get freed.\n\nEven if there were no bug, it is a good idea to bring the error case\ninto line with the common case here.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3991d3bd1506391d8feec209b1d22ccb1c03a0bf", "tree": "b9a691fe6b0bc2bf3c98e64348472fa81de7ddab", "parents": [ "bc1fc6d88c646ea071de34250552051a63000d70" ], "author": { "name": "Tomasz Kvarsin", "email": "kvarsin@gmail.com", "time": "Mon Feb 12 00:52:14 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Feb 12 09:48:29 2007 -0800" }, "message": "[PATCH] warning fix: unsigned-\u003esigned\n\nWhile compiling my code with -Wconversion using gcc-trunk, I always get a\nbunch of warrning from headers, here is fix for them:\n\n__getblk is alawys called with unsigned argument,\nbut it takes signed, the same story with __bread,__breadahead and so on.\n\nSigned-off-by: Tomasz Kvarsin\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "33a266dda9fbbe72dd978a451a8ee33c59da5e9c", "tree": "7e3fa4100e436f12b4c0ed562dd1f6dc9ec84fd4", "parents": [ "42da9cbd3eedde33a42acc2cb06f454814cf5de0" ], "author": { "name": "David Chinner", "email": "dgc@sgi.com", "time": "Mon Feb 12 00:51:41 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Feb 12 09:48:27 2007 -0800" }, "message": "[PATCH] Make BH_Unwritten a first class bufferhead flag V2\n\nCurrently, XFS uses BH_PrivateStart for flagging unwritten extent state in a\nbufferhead. Recently, I found the long standing mmap/unwritten extent\nconversion bug, and it was to do with partial page invalidation not clearing\nthe unwritten flag from bufferheads attached to the page but beyond EOF. See\nhere for a full explaination:\n\nhttp://oss.sgi.com/archives/xfs/2006-12/msg00196.html\n\nThe solution I have checked into the XFS dev tree involves duplicating code\nfrom block_invalidatepage to clear the unwritten flag from the bufferhead(s),\nand then calling block_invalidatepage() to do the rest.\n\nChristoph suggested that this would be better solved by pushing the unwritten\nflag into the common buffer head flags and just adding the call to\ndiscard_buffer():\n\nhttp://oss.sgi.com/archives/xfs/2006-12/msg00239.html\n\nThe following patch makes BH_Unwritten a first class citizen.\n\nSigned-off-by: Dave Chinner \u003cdgc@sgi.com\u003e\nAcked-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "72ed3d035855841ad611ee48b20909e9619d4a79", "tree": "70a093fdc61bd93fed09f54ec41c05bbdaf902c6", "parents": [ "c742b53114f8d1535608dafb6a5690103a0748b5" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Sat Feb 10 01:46:22 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 11:15:24 2007 -0800" }, "message": "[PATCH] buffer: memorder fix\n\nunlock_buffer(), like unlock_page(), must not clear the lock without\nensuring that the critical section is closed.\n\nMingming later sent the same patch, saying:\n\n We are running SDET benchmark and saw double free issue for ext3 extended\n attributes block, which complains the same xattr block already being freed (in\n ext3_xattr_release_block()). The problem could also been triggered by\n multiple threads loop untar/rm a kernel tree.\n\n The race is caused by missing a memory barrier at unlock_buffer() before the\n lock bit being cleared, resulting in possible concurrent h_refcounter update.\n That causes a reference counter leak, then later leads to the double free that\n we have seen.\n\n Inside unlock_buffer(), there is a memory barrier is placed *after* the lock\n bit is being cleared, however, there is no memory barrier *before* the bit is\n cleared. On some arch the h_refcount update instruction and the clear bit\n instruction could be reordered, thus leave the critical section re-entered.\n\n The race is like this: For example, if the h_refcount is initialized as 1,\n\n cpu 0: cpu1\n -------------------------------------- -----------------------------------\n lock_buffer() /* test_and_set_bit */\n clear_buffer_locked(bh);\n lock_buffer() /* test_and_set_bit */\n h_refcount \u003d h_refcount+1; /* \u003d 2*/ h_refcount \u003d h_refcount + 1; /*\u003d 2 */\n clear_buffer_locked(bh);\n .... ......\n\n We lost a h_refcount here. We need a memory barrier before the buffer head lock\n bit being cleared to force the order of the two writes. Please apply.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Mingming Cao \u003ccmm@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fc0ecff698165ae8e178efa086e0dd1f385206b1", "tree": "fc6274f0862bdd6749172201170b2f6a7ce4c4ff", "parents": [ "54bc485522afdac33de5504da2ea8cdcc690674e" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Sat Feb 10 01:45:39 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:31 2007 -0800" }, "message": "[PATCH] remove invalidate_inode_pages()\n\nConvert all calls to invalidate_inode_pages() into open-coded calls to\ninvalidate_mapping_pages().\n\nLeave the invalidate_inode_pages() wrapper in place for now, marked as\ndeprecated.\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "87df7241bd547da5d4d4a4e5397866dfe422e439", "tree": "ffe1e90a761aa358ef95e351e0718cb3c377ad37", "parents": [ "4cbf2aa35e1c189db234190fefc6c83b139ef963" ], "author": { "name": "Nick Piggin", "email": "nickpiggin@yahoo.com.au", "time": "Tue Jan 30 14:36:27 2007 +1100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jan 29 20:20:42 2007 -0800" }, "message": "[PATCH] Fix try_to_free_buffer() locking\n\nFix commit ecdfc9787fe527491baefc22dce8b2dbd5b2908d\n\nNot to put too fine a point on it, but in a nutshell...\n\n\t__set_page_dirty_buffers() | try_to_free_buffers()\n\t---------------------------+---------------------------\n\t | spin_lock(private_lock);\n\t | drop_bufers()\n\t | spin_unlock(private_lock);\n\tspin_lock(private_lock) |\n\t!page_has_buffers() |\n\tspin_unlock(private_lock) |\n\tSetPageDirty() |\n\t | cancel_dirty_page()\n\n oops!\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ecdfc9787fe527491baefc22dce8b2dbd5b2908d", "tree": "31e7ddac0339498095c40444f81c0b03751434ae", "parents": [ "5ad0d383ddbf0d2fce43b8aac267a6c299fd2dff" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jan 26 12:47:06 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jan 26 12:47:06 2007 -0800" }, "message": "Resurrect \u0027try_to_free_buffers()\u0027 VM hackery\n\nIt\u0027s not pretty, but it appears that ext3 with data\u003djournal will clean\npages without ever actually telling the VM that they are clean. This,\nin turn, will result in the VM (and balance_dirty_pages() in particular)\nto never realize that the pages got cleaned, and wait forever for an\nevent that already happened.\n\nTechnically, this seems to be a problem with ext3 itself, but it used to\nbe hidden by \u0027try_to_free_buffers()\u0027 noticing this situation on its own,\nand just working around the filesystem problem.\n\nThis commit re-instates that hack, in order to avoid a regression for\nthe 2.6.20 release. This fixes bugzilla 7844:\n\n\thttp://bugzilla.kernel.org/show_bug.cgi?id\u003d7844\n\nPeter Zijlstra points out that we should probably retain the debugging\ncode that this removes from cancel_dirty_page(), and I agree, but for\nthe imminent release we might as well just silence the warning too\n(since it\u0027s not a new bug: anything that triggers that warning has been\naround forever).\n\nAcked-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nAcked-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f73ca1b76c6880b934d3ef566c1592efc80bb759", "tree": "c9384ef5ff0ba68817858afdcc330e8707b11ec9", "parents": [ "88bf7b391dca840f03fe25e4ff8fe6b4319fa07b" ], "author": { "name": "David Chinner", "email": "dgc@sgi.com", "time": "Wed Jan 10 23:15:41 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Jan 11 18:18:21 2007 -0800" }, "message": "[PATCH] Revert bd_mount_mutex back to a semaphore\n\nRevert bd_mount_mutex back to a semaphore so that xfs_freeze -f /mnt/newtest;\nxfs_freeze -u /mnt/newtest works safely and doesn\u0027t produce lockdep warnings.\n\n(XFS unlocks the semaphore from a different task, by design. The mutex\ncode warns about this)\n\nSigned-off-by: Dave Chinner \u003cdgc@sgi.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "46d2277c796f9f4937bfa668c40b2e3f43e93dd0", "tree": "cfde4d8c4b1d721455c978a53e70a55a6c73c3ef", "parents": [ "9bfb18392ef586467277fa25d8f3a7a93611f6df" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Tue Dec 19 15:21:59 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 21 09:04:31 2006 -0800" }, "message": "Clean up and make try_to_free_buffers() not race with dirty pages\n\nThis is preparatory work in our continuing saga on some hard-to-trigger\nfile corruption with shared writable mmap() after the dirty page\ntracking changes (commit d08b3851da41d0ee60851f2c75b118e1f7a5fc89 etc)\nwere merged.\n\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e08748ce01e02f0ec154b141f392ccb9555333f4", "tree": "9fa9d9f8fb468997f7f6fbcb28e243724d1fdda6", "parents": [ "55e829af06681e5d731c03ba04febbd1c76ca293" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Sun Dec 10 02:19:31 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:41 2006 -0800" }, "message": "[PATCH] io-accounting: write-cancel accounting\n\nAccount for the number of byte writes which this process caused to not happen\nafter all.\n\nCc: Jay Lan \u003cjlan@sgi.com\u003e\nCc: Shailabh Nagar \u003cnagar@watson.ibm.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Chris Sturtivant \u003ccsturtiv@sgi.com\u003e\nCc: Tony Ernst \u003ctee@sgi.com\u003e\nCc: Guillaume Thouvenin \u003cguillaume.thouvenin@bull.net\u003e\nCc: David Wright \u003cdaw@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "55e829af06681e5d731c03ba04febbd1c76ca293", "tree": "4304030be250d913f56696ffda8ae660fb17b110", "parents": [ "8c08540f8755c451d8b96ea14cfe796bc3cd712d" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Sun Dec 10 02:19:27 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:41 2006 -0800" }, "message": "[PATCH] io-accounting: write accounting\n\nAccounting writes is fairly simple: whenever a process flips a page from clean\nto dirty, we accuse it of having caused a write to underlying storage of\nPAGE_CACHE_SIZE bytes.\n\nThis may overestimate the amount of writing: the page-dirtying may cause only\none buffer_head\u0027s worth of writeout. Fixing that is possible, but probably a\nbit messy and isn\u0027t obviously important.\n\nCc: Jay Lan \u003cjlan@sgi.com\u003e\nCc: Shailabh Nagar \u003cnagar@watson.ibm.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Chris Sturtivant \u003ccsturtiv@sgi.com\u003e\nCc: Tony Ernst \u003ctee@sgi.com\u003e\nCc: Guillaume Thouvenin \u003cguillaume.thouvenin@bull.net\u003e\nCc: David Wright \u003cdaw@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "8c08540f8755c451d8b96ea14cfe796bc3cd712d", "tree": "ca2ba9673ce1c2733c538012105681b238265e48", "parents": [ "7c3ab7381e79dfc7db14a67c6f4f3285664e1ec2" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Sun Dec 10 02:19:24 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:41 2006 -0800" }, "message": "[PATCH] clean up __set_page_dirty_nobuffers()\n\nSave a tabstop in __set_page_dirty_nobuffers() and __set_page_dirty_buffers()\nand a few other places. No functional changes.\n\nCc: Jay Lan \u003cjlan@sgi.com\u003e\nCc: Shailabh Nagar \u003cnagar@watson.ibm.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Chris Sturtivant \u003ccsturtiv@sgi.com\u003e\nCc: Tony Ernst \u003ctee@sgi.com\u003e\nCc: Guillaume Thouvenin \u003cguillaume.thouvenin@bull.net\u003e\nCc: David Wright \u003cdaw@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "02316067852187b8bec781bec07410e91af79627", "tree": "856e3f4610c91a6548bf3bf5c70ecbc0b28a4145", "parents": [ "a38a44c1a93078fc5fadc4ac2df8dea4697069e2" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Dec 06 20:38:17 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:39 2006 -0800" }, "message": "[PATCH] hotplug CPU: clean up hotcpu_notifier() use\n\nThere was lots of #ifdef noise in the kernel due to hotcpu_notifier(fn,\nprio) not correctly marking \u0027fn\u0027 as used in the !HOTPLUG_CPU case, and thus\ngenerating compiler warnings of unused symbols, hence forcing people to add\n#ifdefs.\n\nthe compiler can skip truly unused functions just fine:\n\n text data bss dec hex filename\n 1624412 728710 3674856 6027978 5bfaca vmlinux.before\n 1624412 728710 3674856 6027978 5bfaca vmlinux.after\n\n[akpm@osdl.org: topology.c fix]\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e18b890bb0881bbab6f4f1a6cd20d9c60d66b003", "tree": "4828be07e1c24781c264b42c5a75bcd968223c3f", "parents": [ "441e143e95f5aa1e04026cb0aa71c801ba53982f" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Dec 06 20:33:20 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:25 2006 -0800" }, "message": "[PATCH] slab: remove kmem_cache_t\n\nReplace all uses of kmem_cache_t with struct kmem_cache.\n\nThe patch was generated using the following script:\n\n\t#!/bin/sh\n\t#\n\t# Replace one string by another in all the kernel sources.\n\t#\n\n\tset -e\n\n\tfor file in `find * -name \"*.c\" -o -name \"*.h\"|xargs grep -l $1`; do\n\t\tquilt add $file\n\t\tsed -e \"1,\\$s/$1/$2/g\" $file \u003e/tmp/$$\n\t\tmv /tmp/$$ $file\n\t\tquilt refresh\n\tdone\n\nThe script was run like this\n\n\tsh replace kmem_cache_t \"struct kmem_cache\"\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "58ff407bee5a55f9c1188a3f9d70ffc79485183c", "tree": "58132c31553a16b09e10f876561cd9ff1132fa77", "parents": [ "d343fce148a4eee24a907a05c4101d3268045aae" ], "author": { "name": "Jan Kara", "email": "jack@suse.cz", "time": "Tue Oct 17 00:10:19 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Oct 17 08:18:46 2006 -0700" }, "message": "[PATCH] Fix IO error reporting on fsync()\n\nWhen IO error happens on metadata buffer, buffer is freed from memory and\nlater fsync() is called, filesystems like ext2 fail to report EIO. We\n\nsolve the problem by introducing a pointer to associated address space into\nthe buffer_head. When a buffer is removed from a list of metadata buffers\nassociated with an address space, IO error is transferred from the buffer to\nthe address space, so that fsync can later report it.\n\nSigned-off-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "8c58165108e26d18849a0138c719e680f281197a", "tree": "ff5e54e11357867ef3e8edfa9df8de25a688afdc", "parents": [ "97e860d364aa9d08e895ecb619b9122ae2c70df8" ], "author": { "name": "Monakhov Dmitriy", "email": "dmonakhov@openvz.org", "time": "Wed Oct 11 01:22:00 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Oct 11 11:14:23 2006 -0700" }, "message": "[PATCH] D-cache aliasing issue in __block_prepare_write\n\nA couple of flush_dcache_page()s are missing on the I/O-error paths.\n\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e5657933863f43cc6bb76a54d659303dafaa9e58", "tree": "7f6351194953b0d167ea79749d9fcaf9ae7f6a1f", "parents": [ "e0ab2928cc2202f13f0574d4c6f567f166d307eb" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Wed Oct 11 01:21:46 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Oct 11 11:14:21 2006 -0700" }, "message": "[PATCH] grow_buffers() infinite loop fix\n\nIf grow_buffers() is for some reason passed a block number which wants to lie\noutside the maximum-addressable pagecache range (PAGE_SIZE * 4G bytes) then it\nwill accidentally truncate `index\u0027 and will then instnatiate a page at the\nwrong pagecache offset. This causes __getblk_slow() to go into an infinite\nloop.\n\nThis can happen with corrupted disks, or with software errors elsewhere.\n\nDetect that, and handle it.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ebf7a227dd1d810203a19642655d2fa293f395dd", "tree": "28b91319c3e792b79b405addd342288f43629a7e", "parents": [ "1601ff0e29cfe112b06aa9bb2fb3519a1125baaa" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Oct 10 04:36:54 2006 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Oct 09 19:51:18 2006 -0700" }, "message": "[PATCH] mm: bug in set_page_dirty_buffers\n\nThis was triggered, but not the fault of, the dirty page accounting\npatches. Suitable for -stable as well, after it goes upstream.\n\n Unable to handle kernel NULL pointer dereference at virtual address 0000004c\n EIP is at _spin_lock+0x12/0x66\n Call Trace:\n [\u003c401766e7\u003e] __set_page_dirty_buffers+0x15/0xc0\n [\u003c401401e7\u003e] set_page_dirty+0x2c/0x51\n [\u003c40140db2\u003e] set_page_dirty_balance+0xb/0x3b\n [\u003c40145d29\u003e] __do_fault+0x1d8/0x279\n [\u003c40147059\u003e] __handle_mm_fault+0x125/0x951\n [\u003c401133f1\u003e] do_page_fault+0x440/0x59f\n [\u003c4034d0c1\u003e] error_code+0x39/0x40\n [\u003c08048a33\u003e] 0x8048a33\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "cf9a2ae8d49948f861b56e5333530e491a9da190", "tree": "21f0b0d781b3e60cc60464d39b6d95681201b37e", "parents": [ "4090959aee403817ff386415f9bc602c1a0882ef" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Tue Aug 29 19:05:54 2006 +0100" }, "committer": { "name": "Jens Axboe", "email": "axboe@nelson.home.kernel.dk", "time": "Sat Sep 30 20:31:19 2006 +0200" }, "message": "[PATCH] BLOCK: Move functions out of buffer code [try #6]\n\nMove some functions out of the buffering code that aren\u0027t strictly buffering\nspecific. This is a precursor to being able to disable the block layer.\n\n (*) Moved some stuff out of fs/buffer.c:\n\n (*) The file sync and general sync stuff moved to fs/sync.c.\n\n (*) The superblock sync stuff moved to fs/super.c.\n\n (*) do_invalidatepage() moved to mm/truncate.c.\n\n (*) try_to_release_page() moved to mm/filemap.c.\n\n (*) Moved some related declarations between header files:\n\n (*) declarations for do_invalidatepage() and try_to_release_page() moved\n \t to linux/mm.h.\n\n (*) __set_page_dirty_buffers() moved to linux/buffer_head.h.\n\nSigned-Off-By: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003caxboe@kernel.dk\u003e\n" }, { "commit": "d08b3851da41d0ee60851f2c75b118e1f7a5fc89", "tree": "a01f6930a1387e8f66607e2fe16c62bb7044353b", "parents": [ "725d704ecaca4a43f067092c140d4f3271cf2856" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Sep 25 23:30:57 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:44 2006 -0700" }, "message": "[PATCH] mm: tracking shared dirty pages\n\nTracking of dirty pages in shared writeable mmap()s.\n\nThe idea is simple: write protect clean shared writeable pages, catch the\nwrite-fault, make writeable and set dirty. On page write-back clean all the\nPTE dirty bits and write protect them once again.\n\nThe implementation is a tad harder, mainly because the default\nbacking_dev_info capabilities were too loosely maintained. Hence it is not\nenough to test the backing_dev_info for cap_account_dirty.\n\nThe current heuristic is as follows, a VMA is eligible when:\n - its shared writeable\n (vm_flags \u0026 (VM_WRITE|VM_SHARED)) \u003d\u003d (VM_WRITE|VM_SHARED)\n - it is not a \u0027special\u0027 mapping\n (vm_flags \u0026 (VM_PFNMAP|VM_INSERTPAGE)) \u003d\u003d 0\n - the backing_dev_info is cap_account_dirty\n mapping_cap_account_dirty(vma-\u003evm_file-\u003ef_mapping)\n - f_op-\u003emmap() didn\u0027t change the default page protection\n\nPage from remap_pfn_range() are explicitly excluded because their COW\nsemantics are already horrid enough (see vm_normal_page() in do_wp_page()) and\nbecause they don\u0027t have a backing store anyway.\n\nmprotect() is taught about the new behaviour as well. However it overrides\nthe last condition.\n\nCleaning the pages on write-back is done with page_mkclean() a new rmap call.\nIt can be called on any page, but is currently only implemented for mapped\npages, if the page is found the be of a VMA that accounts dirty pages it will\nalso wrprotect the PTE.\n\nFinally, in fs/buffers.c:try_to_free_buffers(); remove clear_page_dirty() from\nunder -\u003eprivate_lock. This seems to be safe, since -\u003eprivate_lock is used to\nserialize access to the buffers, not the page itself. This is needed because\nclear_page_dirty() will call into page_mkclean() and would thereby violate\nlocking order.\n\n[dhowells@redhat.com: Provide a page_mkclean() implementation for NOMMU]\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0e1dfc66b6ec94984a4778132147a8aa36461d58", "tree": "225a8e044e021a5a337704bc1f5ea862a5f75375", "parents": [ "a268cefebceeb2046dfdfa301f041c2468536852" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Sun Jul 30 03:03:28 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jul 31 13:28:38 2006 -0700" }, "message": "[PATCH] invalidate_bdev() speedup\n\nWe can immediately bail from invalidate_bdev() if the blockdev has no\npagecache.\n\nThis solves the huge IPI storms which hald is causing on the big ia64\nmachines when it polls CDROM drives.\n\nAcked-by: Jes Sorensen \u003cjes@sgi.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "22a3e233ca08a2ddc949ba1ae8f6e16ec7ef1a13", "tree": "7ef158ba2c30e0dde2dc103d1904fae243759a6b", "parents": [ "39302175c26d74be35715c05a0f342c9e64c21bf", "6ab3d5624e172c553004ecc862bfeac16d9d68b7" ], "author": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 15:39:30 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 15:39:30 2006 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial:\n Remove obsolete #include \u003clinux/config.h\u003e\n remove obsolete swsusp_encrypt\n arch/arm26/Kconfig typos\n Documentation/IPMI typos\n Kconfig: Typos in net/sched/Kconfig\n v9fs: do not include linux/version.h\n Documentation/DocBook/mtdnand.tmpl: typo fixes\n typo fixes: specfic -\u003e specific\n typo fixes in Documentation/networking/pktgen.txt\n typo fixes: occuring -\u003e occurring\n typo fixes: infomation -\u003e information\n typo fixes: disadvantadge -\u003e disadvantage\n typo fixes: aquire -\u003e acquire\n typo fixes: mecanism -\u003e mechanism\n typo fixes: bandwith -\u003e bandwidth\n fix a typo in the RTC_CLASS help text\n smb is no longer maintained\n\nManually merged trivial conflict in arch/um/kernel/vmlinux.lds.S\n" }, { "commit": "b1e7a8fd854d2f895730e82137400012b509650e", "tree": "9fba87ff6b0146ebd4ee5bc7d5f0c8b037dbb3ad", "parents": [ "df849a1529c106f7460e51479ca78fe07b07dc8c" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:39 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:35 2006 -0700" }, "message": "[PATCH] zoned vm counters: conversion of nr_dirty to per zone counter\n\nThis makes nr_dirty a per zone counter. Looping over all processors is\navoided during writeback state determination.\n\nThe counter aggregation for nr_dirty had to be undone in the NFS layer since\nwe summed up the page counts from multiple zones. Someone more familiar with\nNFS should probably review what I have done.\n\n[akpm@osdl.org: bugfix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Trond Myklebust \u003ctrond.myklebust@fys.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6ab3d5624e172c553004ecc862bfeac16d9d68b7", "tree": "6d98881fe91fd9583c109208d5c27131b93fa248", "parents": [ "e02169b682bc448ccdc819dc8639ed34a23cedd8" ], "author": { "name": "Jörn Engel", "email": "joern@wohnheim.fh-wedel.de", "time": "Fri Jun 30 19:25:36 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Fri Jun 30 19:25:36 2006 +0200" }, "message": "Remove obsolete #include \u003clinux/config.h\u003e\n\nSigned-off-by: Jörn Engel \u003cjoern@wohnheim.fh-wedel.de\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "f5e54d6e53a20cef45af7499e86164f0e0d16bb2", "tree": "cb92acbb89b84796261bf5563182261ec5654127", "parents": [ "a052b68b1e7a31f1e6a721290035e9deb0f6fed9" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Wed Jun 28 04:26:44 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jun 28 14:59:04 2006 -0700" }, "message": "[PATCH] mark address_space_operations const\n\nSame as with already do with the file operations: keep them in .rodata and\nprevents people from doing runtime patching.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Steven French \u003csfrench@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b6cd0b772dcc5dc9b4c03d53946474dee399fa72", "tree": "09ef125f7595f73ba256177f894d6c341074ff5b", "parents": [ "a7807a32bbb027ab9955b96734fdc7f1e6497a9f" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Jun 27 02:53:54 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jun 27 17:32:38 2006 -0700" }, "message": "[PATCH] fs/buffer.c: cleanups\n\n- add a proper prototype for the following global function:\n - buffer_init()\n\n- make the following needlessly global function static:\n - end_buffer_async_write()\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b31dc66a54ad986b6b73bdc49c8efc17cbad1833", "tree": "5591383c1cbffe11512da889c971f899333f1a44", "parents": [ "271f18f102c789f59644bb6c53a69da1df72b2f4" ], "author": { "name": "Jens Axboe", "email": "axboe@suse.de", "time": "Tue Jun 13 08:26:10 2006 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@nelson.home.kernel.dk", "time": "Fri Jun 23 17:10:39 2006 +0200" }, "message": "[PATCH] Kill PF_SYNCWRITE flag\n\nA process flag to indicate whether we are doing sync io is incredibly\nugly. It also causes performance problems when one does a lot of async\nio and then proceeds to sync it. Part of the io will go out as async,\nand the other part as sync. This causes a disconnect between the\npreviously submitted io and the synced io. For io schedulers such as CFQ,\nthis will cause us lost merges and suboptimal behaviour in scheduling.\n\nRemove PF_SYNCWRITE completely from the fsync/msync paths, and let\nthe O_DIRECT path just directly indicate that the writes are sync\nby using WRITE_SYNC instead.\n\nSigned-off-by: Jens Axboe \u003caxboe@suse.de\u003e\n" }, { "commit": "ec936fc563715a9e2b2e363eb060655b49529325", "tree": "72e77aefeeda3c6ff396f080a5c6a82f25d52bf0", "parents": [ "679bc9fbb508a0aac9539b2de747eb5849feb428" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Mon Mar 27 01:15:59 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Mar 27 08:44:48 2006 -0800" }, "message": "[PATCH] for_each_online_pgdat: renaming for_each_pgdat\n\nReplace for_each_pgdat() with for_each_online_pgdat().\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9ae21d1bb376436285cd5346d3e4b3655d6dd1b9", "tree": "8f889770fae721da63bd378c1834a87e2eb1cfb5", "parents": [ "f9b4192923fa6e38331e88214b1fe5fc21583fcc", "e9415777b1cd0eaf4d1d3d61772f0e6d5c2551ad" ], "author": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Mar 26 09:41:18 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Mar 26 09:41:18 2006 -0800" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial:\n drivers/char/ftape/lowlevel/fdc-io.c: Correct a comment\n Kconfig help: MTD_JEDECPROBE already supports Intel\n Remove ugly debugging stuff\n do_mounts.c: Minor ROOT_DEV comment cleanup\n BUG_ON() Conversion in drivers/s390/block/dasd_devmap.c\n BUG_ON() Conversion in mm/mempool.c\n BUG_ON() Conversion in mm/memory.c\n BUG_ON() Conversion in kernel/fork.c\n BUG_ON() Conversion in ipc/sem.c\n BUG_ON() Conversion in fs/ext2/\n BUG_ON() Conversion in fs/hfs/\n BUG_ON() Conversion in fs/dcache.c\n BUG_ON() Conversion in fs/buffer.c\n BUG_ON() Conversion in input/serio/hp_sdc_mlc.c\n BUG_ON() Conversion in md/dm-table.c\n BUG_ON() Conversion in md/dm-path-selector.c\n BUG_ON() Conversion in drivers/isdn\n BUG_ON() Conversion in drivers/char\n BUG_ON() Conversion in drivers/mtd/\n" }, { "commit": "b0cf2321c6599138f860517745503691556d8453", "tree": "39ecfea09c13ce09172ab3ec5a5b6d2fef657cac", "parents": [ "205f87f6b342444f722e4559d33318686f7df2ca" ], "author": { "name": "Badari Pulavarty", "email": "pbadari@us.ibm.com", "time": "Sun Mar 26 01:38:00 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Mar 26 08:57:01 2006 -0800" }, "message": "[PATCH] pass b_size to -\u003eget_block()\n\nPass amount of disk needs to be mapped to get_block(). This way one can\nmodify the fs -\u003eget_block() functions to map multiple blocks at the same time.\n\n[akpm@osdl.org: performance tweak]\n[akpm@osdl.org: remove unneeded assignments]\nSigned-off-by: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "205f87f6b342444f722e4559d33318686f7df2ca", "tree": "61f32bb0582dde9fd62ee3d03ac3324b949b29e6", "parents": [ "d48589bfad0e60bff0aa3f9e4875983f607bd44b" ], "author": { "name": "Badari Pulavarty", "email": "pbadari@us.ibm.com", "time": "Sun Mar 26 01:38:00 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Mar 26 08:57:01 2006 -0800" }, "message": "[PATCH] change buffer_head.b_size to size_t\n\nIncrease the size of the buffer_head b_size field (only) for 64 bit platforms.\nUpdate some old and moldy comments in and around the structure as well.\n\nThe b_size increase allows us to perform larger mappings and allocations for\nlarge I/O requests from userspace, which tie in with other changes allowing\nthe get_block_t() interface to map multiple blocks at once.\n\nSigned-off-by: Nathan Scott \u003cnathans@sgi.com\u003e\nSigned-off-by: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "2ff28e22bdb8727fbc7d7889807bc5a73aae56c5", "tree": "f7418aa963d729bf9fe8bd44d6c9b6e424a6c6bf", "parents": [ "3978d7179d3849848df8a37dd0a5acc20bcb8750" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Sun Mar 26 01:37:18 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Mar 26 08:56:55 2006 -0800" }, "message": "[PATCH] Make address_space_operations-\u003einvalidatepage return void\n\nThe return value of this function is never used, so let\u0027s be honest and\ndeclare it as void.\n\nSome places where invalidatepage returned 0, I have inserted comments\nsuggesting a BUG_ON.\n\n[akpm@osdl.org: JBD BUG fix]\n[akpm@osdl.org: rework for git-nfs]\n[akpm@osdl.org: don\u0027t go BUG in block_invalidate_page()]\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nAcked-by: Dave Kleikamp \u003cshaggy@austin.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "3978d7179d3849848df8a37dd0a5acc20bcb8750", "tree": "f6a60c588d54ffc482764e7846aabf7ba6135aa4", "parents": [ "5f921ae96f1529a55966f25cd5c70fab11d38be7" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Sun Mar 26 01:37:17 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Mar 26 08:56:55 2006 -0800" }, "message": "[PATCH] Make address_space_operations-\u003esync_page return void\n\nThe only user ignores the return value, and the only instanace\n(block_sync_page) always returns 0...\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e827f92355e1eeec2d227d3bd3350d04042a011e", "tree": "87d1b735d59edcae4044b46157cb72de1a32af54", "parents": [ "fddaaae16ba4d9f4d392a9ef94616d9d22485571" ], "author": { "name": "Eric Sesterhenn", "email": "snakebyte@gmx.de", "time": "Sun Mar 26 18:24:46 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Sun Mar 26 18:24:46 2006 +0200" }, "message": "BUG_ON() Conversion in fs/buffer.c\n\nthis changes if() BUG(); constructs to BUG_ON() which is\ncleaner and can better optimized away\n\nSigned-off-by: Eric Sesterhenn \u003csnakebyte@gmx.de\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "d25b9a1ff0741e71a46f37f45263b5ddcbc948c4", "tree": "7cbf0f402041840b413a43c6da936998981f100d", "parents": [ "11b8448751ba114416c63899638a8e473ebd21e7" ], "author": { "name": "OGAWA Hirofumi", "email": "hirofumi@mail.parknet.co.jp", "time": "Sat Mar 25 03:07:44 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Mar 25 08:22:56 2006 -0800" }, "message": "[PATCH] freeze_bdev() cleanup\n\nfreeze_bdev() uses a fsync_super() without sync_blockdev(). This patch\nmakes __fsync_super() and shares it.\n\nSigned-off-by: OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "18e79b40ed9c5223b88771f805c69f5993fc131b", "tree": "cc628524d4bfe3166bbe9d8d7217a1cb009ea209", "parents": [ "676758bdb7bfca8413a85203921746f446e237be" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Fri Mar 24 03:18:14 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Mar 24 07:33:27 2006 -0800" }, "message": "[PATCH] fsync: extract internal code\n\nPull the guts out of do_fsync() - we can use it elsewhere.\n\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" } ], "next": "4741c9fd36b3bcadd37238321c469049da94a4b9" }