)]}'
{
  "log": [
    {
      "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": "4671a1322052425afa38fcb7980d2fd2bb0fc99b",
      "tree": "d31e221682a11e7af2771b426773dff249ed115c",
      "parents": [
        "73e9ffdd0cc8159f876d5e29ecf2d9c1bfca544f"
      ],
      "author": {
        "name": "Richard Kennedy",
        "email": "richard@rsk.demon.co.uk",
        "time": "Mon Mar 01 10:57:22 2010 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Mon Mar 01 10:57:22 2010 +0100"
      },
      "message": "block: don\u0027t access jiffies when initialising io_context\n\nAs the comment says the initial value of last_waited is never used, so\nthere is no need to initialise it with the current jiffies. Jiffies is\nhot enough without accessing it for no reason.\n\nSigned-off-by: Richard Kennedy \u003crichard@rsk.demon.co.uk\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "ce289321b7dc1eb108e3df0dec872b7429ef49f7",
      "tree": "9153bc19d805d796b7a9ddac04d2d060a9d3261e",
      "parents": [
        "b27d7f16d3c6c27345d4280a739809c1c2c4c0b5"
      ],
      "author": {
        "name": "Kirill Afonshin",
        "email": "kirill_nnov@mail.ru",
        "time": "Fri Jan 08 22:09:59 2010 +0300"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Mon Jan 11 14:29:20 2010 +0100"
      },
      "message": "block: removed unused as_io_context\n\nIt isn\u0027t used anymore, since AS was deleted.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "b69f2292063d2caf37ca9aec7d63ded203701bf3",
      "tree": "be4acb81ea4ab7014047808ec2b2c908e8334f55",
      "parents": [
        "61cc74fbb87af6aa551a06a370590c9bc07e29d9"
      ],
      "author": {
        "name": "Louis Rilling",
        "email": "louis.rilling@kerlabs.com",
        "time": "Fri Dec 04 14:52:42 2009 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri Dec 04 16:36:18 2009 +0100"
      },
      "message": "block: Fix io_context leak after failure of clone with CLONE_IO\n\nWith CLONE_IO, parent\u0027s io_context-\u003enr_tasks is incremented, but never\ndecremented whenever copy_process() fails afterwards, which prevents\nexit_io_context() from calling IO schedulers exit functions.\n\nGive a task_struct to exit_io_context(), and call exit_io_context() instead of\nput_io_context() in copy_process() cleanup path.\n\nSigned-off-by: Louis Rilling \u003clouis.rilling@kerlabs.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "61cc74fbb87af6aa551a06a370590c9bc07e29d9",
      "tree": "351116a74bba13b016c730f777eca86b3b197e5e",
      "parents": [
        "3c764b7a654668dd04905841d6024f7b6aa843a5"
      ],
      "author": {
        "name": "Louis Rilling",
        "email": "louis.rilling@kerlabs.com",
        "time": "Fri Dec 04 14:52:41 2009 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri Dec 04 16:36:18 2009 +0100"
      },
      "message": "block: Fix io_context leak after clone with CLONE_IO\n\nWith CLONE_IO, copy_io() increments both ioc-\u003erefcount and ioc-\u003enr_tasks.\nHowever exit_io_context() only decrements ioc-\u003erefcount if ioc-\u003enr_tasks\nreaches 0.\n\nAlways call put_io_context() in exit_io_context().\n\nSigned-off-by: Louis Rilling \u003clouis.rilling@kerlabs.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "d9c7d394a8ebacb60097b192939ae9f15235225e",
      "tree": "4fbf9c7677acb03c23d05faba1a4b0bcfb6702b4",
      "parents": [
        "1d589bb16b825b3a7b4edd34d997f1f1f953033d"
      ],
      "author": {
        "name": "Nikanth Karthikesan",
        "email": "knikanth@novell.com",
        "time": "Wed Jun 10 12:57:06 2009 -0700"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Wed Jun 10 23:07:15 2009 +0200"
      },
      "message": "block: prevent possible io_context-\u003erefcount overflow\n\nCurrently io_context has an atomic_t(32-bit) as refcount.  In the case of\ncfq, for each device against whcih a task does I/O, a reference to the\nio_context would be taken.  And when there are multiple process sharing\nio_contexts(CLONE_IO) would also have a reference to the same io_context.\n\nTheoretically the possible maximum number of processes sharing the same\nio_context + the number of disks/cfq_data referring to the same io_context\ncan overflow the 32-bit counter on a very high-end machine.\n\nEven though it is an improbable case, let us make it atomic_long_t.\n\nSigned-off-by: Nikanth Karthikesan \u003cknikanth@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "07416d29bcf608257f1e5280642dcbe0021518a3",
      "tree": "6b88b2b043cac10b34234320c68e06848c00127c",
      "parents": [
        "aa94b5371f6f898558d9fa5690cc6e4bf917a572"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Wed May 07 09:17:12 2008 +0200"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Wed May 07 09:28:57 2008 +0200"
      },
      "message": "cfq-iosched: fix RCU race in the cfq io_context destructor handling\n\nput_io_context() drops the RCU read lock before calling into cfq_dtor(),\nhowever we need to hold off freeing there before grabbing and\ndereferencing the first object on the list.\n\nSo extend the rcu_read_lock() scope to cover the calling of cfq_dtor(),\nand optimize cfq_free_io_context() to use a new variant for\ncall_for_each_cic() that assumes the RCU read lock is already held.\n\nHit in the wild by Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "ffc4e7595734cf768fa60cea8a4d545dfef8231a",
      "tree": "9b95aca67ea7c9e87254da501f73cca64504051d",
      "parents": [
        "84e9e03c55c2456799ab19f1d577e72f721fdd39"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Feb 19 10:02:29 2008 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Feb 19 10:04:00 2008 +0100"
      },
      "message": "cfq-iosched: add hlist for browsing parallel to the radix tree\n\nIt\u0027s cumbersome to browse a radix tree from start to finish, especially\nsince we modify keys when a process exits. So add a hlist for the single\npurpose of browsing over all known cfq_io_contexts, used for exit,\nio prio change, etc.\n\nThis fixes http://bugzilla.kernel.org/show_bug.cgi?id\u003d9948\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "13341598263011e079386b22ea35e482f97714c0",
      "tree": "8a4caf93f9fed9e3b318304759028201a477f733",
      "parents": [
        "5ece6c52ea52f9e94298e950a837ccff415c7687"
      ],
      "author": {
        "name": "Adrian Bunk",
        "email": "bunk@kernel.org",
        "time": "Mon Feb 18 13:45:53 2008 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Feb 19 10:04:00 2008 +0100"
      },
      "message": "make blk_ioc_init() static\n\nblk_ioc_init() can become static.\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nSigned-off-by: Jens Axboe \u003caxboe@carl.home.kernel.dk\u003e\n"
    },
    {
      "commit": "3bc217ffe6774e7971d6a7ce6350ce806ebab044",
      "tree": "b1ccad14a0c23f12248092feb867d2e311db59f0",
      "parents": [
        "8bdd3f8a6993fef2f364aca6e1a59559405773a2"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri Feb 01 11:34:49 2008 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Fri Feb 01 11:34:49 2008 +0100"
      },
      "message": "block: kill swap_io_context()\n\nIt blindly copies everything in the io_context, including the lock.\nThat doesn\u0027t work so well for either lock ordering or lockdep.\n\nThere seems zero point in swapping io contexts on a request to request\nmerge, so the best point of action is to just remove it.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    },
    {
      "commit": "86db1e29772372155db08ff48a9ceb76e11a2ad1",
      "tree": "312f38eb3245873c476c50f816b85610fef9615a",
      "parents": [
        "8324aa91d1e11a1fc25f209687a0b2e6c2ed47d0"
      ],
      "author": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Jan 29 14:53:40 2008 +0100"
      },
      "committer": {
        "name": "Jens Axboe",
        "email": "jens.axboe@oracle.com",
        "time": "Tue Jan 29 21:55:08 2008 +0100"
      },
      "message": "block: continue ll_rw_blk.c splitup\n\nAdds files for barrier handling, rq execution, io context handling,\nmapping data to requests, and queue settings.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n"
    }
  ]
}