)]}'
{
  "log": [
    {
      "commit": "fa0d7e3de6d6fc5004ad9dea0dd6b286af8f03e9",
      "tree": "203e0f73883e4c26b5597e36042386a1237dab35",
      "parents": [
        "77812a1ef139d84270d27faacc0630c887411013"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:49:49 2011 +1100"
      },
      "committer": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:50:26 2011 +1100"
      },
      "message": "fs: icache RCU free inodes\n\nRCU free the struct inode. This will allow:\n\n- Subsequent store-free path walking patch. The inode must be consulted for\n  permissions when walking, so an RCU inode reference is a must.\n- sb_inode_list_lock to be moved inside i_lock because sb list walkers who want\n  to take i_lock no longer need to take sb_inode_list_lock to walk the list in\n  the first place. This will simplify and optimize locking.\n- Could remove some nested trylock loops in dcache code\n- Could potentially simplify things a bit in VM land. Do not need to take the\n  page lock to follow page-\u003emapping.\n\nThe downsides of this is the performance cost of using RCU. In a simple\ncreat/unlink microbenchmark, performance drops by about 10% due to inability to\nreuse cache-hot slab objects. As iterations increase and RCU freeing starts\nkicking over, this increases to about 20%.\n\nIn cases where inode lifetimes are longer (ie. many inodes may be allocated\nduring the average life span of a single inode), a lot of this cache reuse is\nnot applicable, so the regression caused by this patch is smaller.\n\nThe cache-hot regression could largely be avoided by using SLAB_DESTROY_BY_RCU,\nhowever this adds some complexity to list walking and store-free path walking,\nso I prefer to implement this at a later date, if it is shown to be a win in\nreal situations. I haven\u0027t found a regression in any non-micro benchmark so I\ndoubt it will be a problem.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n"
    },
    {
      "commit": "45321ac54316eaeeebde0b5f728a1791e500974c",
      "tree": "c3989dd1a8b4a50168d696aa608941de88da9ade",
      "parents": [
        "30140837f256558c943636245ab90897a9455a70"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Jun 07 13:43:19 2010 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Aug 09 16:48:35 2010 -0400"
      },
      "message": "Make -\u003edrop_inode() just return whether inode needs to be dropped\n\n... and let iput_final() do the actual eviction or retention\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "7da08fd17a6e42d80f0f3897a5cbd682e77bcdb4",
      "tree": "cb13eeb7767279d25b954832be82a2528d20948c",
      "parents": [
        "8e22c1a4e429e9facf309c7e7a03ba9cdfd7b106"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Jun 07 13:11:34 2010 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Aug 09 16:48:28 2010 -0400"
      },
      "message": "convert logfs to -\u003eevict_inode()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "8e22c1a4e429e9facf309c7e7a03ba9cdfd7b106",
      "tree": "cf708706e742d96fed8bf997feb279dc4f9a7426",
      "parents": [
        "6fd1e5c994c392ebdbe45600051b2a32ec4860f1"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Jun 07 12:22:31 2010 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Aug 09 16:48:26 2010 -0400"
      },
      "message": "logfs: get rid of magical inodes\n\nordering problems at -\u003ekill_sb() time are solved by doing iput()\nof these suckers in -\u003eput_super()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "ab9a79b9669c28734a69fa9384df6fb93152e53a",
      "tree": "588fc95da1d5769eab4b0a70202d3ac17ababc8e",
      "parents": [
        "be8ded5974c69d0d2128a508b0900ef541d0e7da"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat May 15 04:02:54 2010 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Fri May 21 18:31:27 2010 -0400"
      },
      "message": "logfs: replace inode uid,gid,mode initialization with helper function\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "c0c79c31c9d5fcc19812c6c35f842baf50ee788a",
      "tree": "85b3ee846f70f461add9b7cb1e08f3030992e2fb",
      "parents": [
        "bba0b5c2c27e6dadc93c476f8a4b49d108b66292"
      ],
      "author": {
        "name": "Joern Engel",
        "email": "joern@logfs.org",
        "time": "Wed May 05 22:33:36 2010 +0200"
      },
      "committer": {
        "name": "Joern Engel",
        "email": "joern@logfs.org",
        "time": "Wed May 05 22:33:36 2010 +0200"
      },
      "message": "logfs: fix sync\n\nRather self-explanatory.\n\nSigned-off-by: Joern Engel \u003cjoern@logfs.org\u003e\n"
    },
    {
      "commit": "24797535e18ae219be1fc2632959327075bef5da",
      "tree": "f55288032e5c5e6c02450ca75dbbe8b8bf030a71",
      "parents": [
        "05ebad852901cf9127a743df6ea10c0e8b1590c3"
      ],
      "author": {
        "name": "Prasad Joshi",
        "email": "prasadjoshi124@gmail.com",
        "time": "Tue May 04 22:13:59 2010 +0200"
      },
      "committer": {
        "name": "Joern Engel",
        "email": "joern@logfs.org",
        "time": "Tue May 04 22:17:08 2010 +0200"
      },
      "message": "logfs: initialize li-\u003eli_refcount\n\nli_refcount was not re-initialized in function logfs_init_inode(), small\npatch that will fix the problem\n\nSigned-off-by: Prasad Joshi \u003cprasadjoshi124@gmail.com\u003e\nSigned-off-by: Joern Engel \u003cjoern@logfs.org\u003e\n"
    },
    {
      "commit": "ccc0197b02178f7e1707e659cbc5242fc94b499a",
      "tree": "6cba753c7e2c480123856275fb06845d86ac5a44",
      "parents": [
        "bd2b3f29594c50d7c5bd864d9af05d440394ee82"
      ],
      "author": {
        "name": "Joern Engel",
        "email": "joern@logfs.org",
        "time": "Sat May 01 17:00:34 2010 +0200"
      },
      "committer": {
        "name": "Joern Engel",
        "email": "joern@logfs.org",
        "time": "Sat May 01 18:02:34 2010 +0200"
      },
      "message": "logfs: Close i_ino reuse race\n\nlogfs_seek_hole() may return the same offset it is passed as argument.\nFound by Prasad Joshi \u003cprasadjoshi124@gmail.com\u003e\n\nSigned-off-by: Joern Engel \u003cjoern@logfs.org\u003e\n"
    },
    {
      "commit": "5a0e3ad6af8660be21ca98a971cd00f331318c05",
      "tree": "5bfb7be11a03176a87296a43ac6647975c00a1d1",
      "parents": [
        "ed391f4ebf8f701d3566423ce8f17e614cde9806"
      ],
      "author": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Wed Mar 24 17:04:11 2010 +0900"
      },
      "committer": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Tue Mar 30 22:02:32 2010 +0900"
      },
      "message": "include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h\n\npercpu.h is included by sched.h and module.h and thus ends up being\nincluded when building most .c files.  percpu.h includes slab.h which\nin turn includes gfp.h making everything defined by the two files\nuniversally available and complicating inclusion dependencies.\n\npercpu.h -\u003e slab.h dependency is about to be removed.  Prepare for\nthis change by updating users of gfp and slab facilities include those\nheaders directly instead of assuming availability.  As this conversion\nneeds to touch large number of source files, the following script is\nused as the basis of conversion.\n\n  http://userweb.kernel.org/~tj/misc/slabh-sweep.py\n\nThe script does the followings.\n\n* Scan files for gfp and slab usages and update includes such that\n  only the necessary includes are there.  ie. if only gfp is used,\n  gfp.h, if slab is used, slab.h.\n\n* When the script inserts a new include, it looks at the include\n  blocks and try to put the new include such that its order conforms\n  to its surrounding.  It\u0027s put in the include block which contains\n  core kernel includes, in the same order that the rest are ordered -\n  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there\n  doesn\u0027t seem to be any matching order.\n\n* If the script can\u0027t find a place to put a new include (mostly\n  because the file doesn\u0027t have fitting include block), it prints out\n  an error message indicating which .h file needs to be added to the\n  file.\n\nThe conversion was done in the following steps.\n\n1. The initial automatic conversion of all .c files updated slightly\n   over 4000 files, deleting around 700 includes and adding ~480 gfp.h\n   and ~3000 slab.h inclusions.  The script emitted errors for ~400\n   files.\n\n2. Each error was manually checked.  Some didn\u0027t need the inclusion,\n   some needed manual addition while adding it to implementation .h or\n   embedding .c file was more appropriate for others.  This step added\n   inclusions to around 150 files.\n\n3. The script was run again and the output was compared to the edits\n   from #2 to make sure no file was left behind.\n\n4. Several build tests were done and a couple of problems were fixed.\n   e.g. lib/decompress_*.c used malloc/free() wrappers around slab\n   APIs requiring slab.h to be added manually.\n\n5. The script was run on all .h files but without automatically\n   editing them as sprinkling gfp.h and slab.h inclusions around .h\n   files could easily lead to inclusion dependency hell.  Most gfp.h\n   inclusion directives were ignored as stuff from gfp.h was usually\n   wildly available and often used in preprocessor macros.  Each\n   slab.h inclusion directive was examined and added manually as\n   necessary.\n\n6. percpu.h was updated not to include slab.h.\n\n7. Build test were done on the following configurations and failures\n   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my\n   distributed build env didn\u0027t work with gcov compiles) and a few\n   more options had to be turned off depending on archs to make things\n   build (like ipr on powerpc/64 which failed due to missing writeq).\n\n   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.\n   * powerpc and powerpc64 SMP allmodconfig\n   * sparc and sparc64 SMP allmodconfig\n   * ia64 SMP allmodconfig\n   * s390 SMP allmodconfig\n   * alpha SMP allmodconfig\n   * um on x86_64 SMP allmodconfig\n\n8. percpu.h modifications were reverted so that it could be applied as\n   a separate patch and serve as bisection point.\n\nGiven the fact that I had only a couple of failures from tests on step\n6, I\u0027m fairly confident about the coverage of this conversion patch.\nIf there is a breakage, it\u0027s likely to be something in one of the arch\nheaders which should be easily discoverable easily on most builds of\nthe specific arch.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nGuess-its-ok-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\n"
    },
    {
      "commit": "66b89159c25a47d2177743526c61b5ada7acc39e",
      "tree": "b092b859ca01d7544a666c95f940144b0ef3b35b",
      "parents": [
        "87c7ae06cc50bcbcdcc60d64a959ca0b9b71f892",
        "c2f843f03d658e9ab2a1a455f2c1851fd6a869af"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Mar 06 13:18:03 2010 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Mar 06 13:18:03 2010 -0800"
      },
      "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs:\n  [LogFS] Change magic number\n  [LogFS] Remove h_version field\n  [LogFS] Check feature flags\n  [LogFS] Only write journal if dirty\n  [LogFS] Fix bdev erases\n  [LogFS] Silence gcc\n  [LogFS] Prevent 64bit divisions in hash_index\n  [LogFS] Plug memory leak on error paths\n  [LogFS] Add MAINTAINERS entry\n  [LogFS] add new flash file system\n\nFixed up trivial conflict in lib/Kconfig, and a semantic conflict in\nfs/logfs/inode.c introduced by write_inode() being changed to use\nwriteback_control\u0027 by commit a9185b41a4f84971b930c519f0c63bd450c4810d\n(\"pass writeback_control to -\u003ewrite_inode\")\n"
    },
    {
      "commit": "5db53f3e80dee2d9dff5e534f9e9fe1db17c9936",
      "tree": "066f2873eeb7eb86466f6389e45892d957db3de2",
      "parents": [
        "66b00a7c93ec782d118d2c03bd599cfd041e80a1"
      ],
      "author": {
        "name": "Joern Engel",
        "email": "joern@logfs.org",
        "time": "Fri Nov 20 20:13:39 2009 +0100"
      },
      "committer": {
        "name": "Joern Engel",
        "email": "joern@logfs.org",
        "time": "Fri Nov 20 20:13:39 2009 +0100"
      },
      "message": "[LogFS] add new flash file system\n\nThis is a new flash file system. See\nDocumentation/filesystems/logfs.txt\n\nSigned-off-by: Joern Engel \u003cjoern@logfs.org\u003e\n"
    }
  ]
}