)]}'
{
  "log": [
    {
      "commit": "5f248c9c251c60af3403902b26e08de43964ea0b",
      "tree": "6d3328e72a7e4015a64017eb30be18095c6a3c64",
      "parents": [
        "f6cec0ae58c17522a7bc4e2f39dae19f199ab534",
        "dca332528bc69e05f67161e1ed59929633d5e63d"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Aug 10 11:26:52 2010 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Aug 10 11:26:52 2010 -0700"
      },
      "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (96 commits)\n  no need for list_for_each_entry_safe()/resetting with superblock list\n  Fix sget() race with failing mount\n  vfs: don\u0027t hold s_umount over close_bdev_exclusive() call\n  sysv: do not mark superblock dirty on remount\n  sysv: do not mark superblock dirty on mount\n  btrfs: remove junk sb_dirt change\n  BFS: clean up the superblock usage\n  AFFS: wait for sb synchronization when needed\n  AFFS: clean up dirty flag usage\n  cifs: truncate fallout\n  mbcache: fix shrinker function return value\n  mbcache: Remove unused features\n  add f_flags to struct statfs(64)\n  pass a struct path to vfs_statfs\n  update VFS documentation for method changes.\n  All filesystems that need invalidate_inode_buffers() are doing that explicitly\n  convert remaining -\u003eclear_inode() to -\u003eevict_inode()\n  Make -\u003edrop_inode() just return whether inode needs to be dropped\n  fs/inode.c:clear_inode() is gone\n  fs/inode.c:evict() doesn\u0027t care about delete vs. non-delete paths now\n  ...\n\nFix up trivial conflicts in fs/nilfs2/super.c\n"
    },
    {
      "commit": "6fd1e5c994c392ebdbe45600051b2a32ec4860f1",
      "tree": "672de56405c3a7dd4ffb079304661e4ef14401b7",
      "parents": [
        "4ec70c9b46b032e7f1b41b543c607d6a33b78a1a"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Jun 07 11:55:00 2010 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Aug 09 16:48:25 2010 -0400"
      },
      "message": "convert nilfs2 to -\u003eevict_inode()\n\n[folded build fix from sfr]\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "c5ca48aabe8b11674bf1102abe52d17ecc053f9c",
      "tree": "18c7647b42981d457c59cd4a842ca342a239770d",
      "parents": [
        "1a80a1763fb760b3a84a28df87515f7cdc07a4f4"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Thu Jul 22 03:22:20 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Jul 23 10:02:16 2010 +0900"
      },
      "message": "nilfs2: reject incompatible filesystem\n\nThis forces nilfs to check compatibility of feature flags so as to\nreject a filesystem with unknown features when it mounts or remounts\nthe filesystem.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "05d0e94b66dbdf9d90371b39dc7a6b390ba74d41",
      "tree": "10476599c8102fc58f635d63e4e9a7aa58bf905e",
      "parents": [
        "dc935be2a094087bc561d80f8cf9e66bbc1f7b18"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sat Jul 10 20:52:09 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Jul 23 10:02:14 2010 +0900"
      },
      "message": "nilfs2: get rid of nilfs_bmap_union\n\nThis removes nilfs_bmap_union and finally unifies three structures and\nthe union in bmap/btree code into one.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "b2ac86e1a8e3a3b0ab4449d062c582f07a078e7b",
      "tree": "b681ea820685a278e06995ff23b58f7a85904b70",
      "parents": [
        "d26493b6f017c0b0063a15bf893411ddae85eee4"
      ],
      "author": {
        "name": "Jiro SEKIBA",
        "email": "jir@unicus.jp",
        "time": "Mon Jun 28 17:49:33 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Jul 23 10:02:11 2010 +0900"
      },
      "message": "nilfs2: sync super blocks in turns\n\nThis will sync super blocks in turns instead of syncing duplicate\nsuper blocks at the time.  This will help searching valid super root\nwhen super block is written into disk before log is written, which is\nhappen when barrier-less block devices are unmounted uncleanly.  In\nthe situation, old super block likely points to valid log.\n\nThis patch introduces ns_sbwcount member to the nilfs object and adds\nnilfs_sb_will_flip() function; ns_sbwcount counts how many times super\nblocks write back to the disk.  And, nilfs_sb_will_flip() decides\nwhether flipping required or not based on the count of ns_sbwcount to\nsync super blocks asymmetrically.\n\nThe following functions are also changed:\n\n - nilfs_prepare_super(): flips super blocks according to the\n   argument.  The argument is calculated by nilfs_sb_will_flip()\n   function.\n\n - nilfs_cleanup_super(): sets \"clean\" flag to both super blocks if\n   they point to the same checkpoint.\n\nTo update both of super block information, caller of\nnilfs_commit_super must set the information on both super blocks.\n\nSigned-off-by: Jiro SEKIBA \u003cjir@unicus.jp\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "d26493b6f017c0b0063a15bf893411ddae85eee4",
      "tree": "994de3e7c0383f0e30e5e9c88c0c5d0261a834bc",
      "parents": [
        "60f46b7efc1d6b980511c2644cb89903062f6e98"
      ],
      "author": {
        "name": "Jiro SEKIBA",
        "email": "jir@unicus.jp",
        "time": "Mon Jun 28 17:49:32 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Jul 23 10:02:10 2010 +0900"
      },
      "message": "nilfs2: introduce nilfs_prepare_super\n\nThis function checks validity of super block pointers.\nIf first super block is invalid, it will swap the super blocks.\nThe function should be called before any super block information updates.\nCaller must obtain nilfs-\u003ens_sem.\n\nSigned-off-by: Jiro SEKIBA \u003cjir@unicus.jp\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "60f46b7efc1d6b980511c2644cb89903062f6e98",
      "tree": "6a0093650f858279db262c3b39de721bf3b20098",
      "parents": [
        "c8a11c8a1455c380286cfd3d3442e2b60edee49a"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Jun 28 17:49:31 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Jul 23 10:02:10 2010 +0900"
      },
      "message": "nilfs2: separate function that updates log position\n\nThis moves out section that updates information of the recent log\nposition stored in super blocks from nilfs_commit_super to a new\nroutine named nilfs_set_log_cursor.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "7ecaa46cfea453238a369b3019739d50ff5d7c37",
      "tree": "c69911a31c3a2cd4966979de2d34764e08471f2a",
      "parents": [
        "bde4e696e4a527c3cc579ed77e4844d11ca17e12"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Jun 28 17:49:29 2010 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Jul 23 10:02:10 2010 +0900"
      },
      "message": "nilfs2: add nilfs_cleanup_super\n\nThis function write out filesystem state to super blocks in order to\nshare the same cleanup work.  This is a preparation for making super\nblock writeback alternately.\n\nCc: Jiro SEKIBA \u003cjir@unicus.jp\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "7ea8085910ef3dd4f3cad6845aaa2b580d39b115",
      "tree": "d9c1edb5906f943f7d70bfb4b65106e29772d379",
      "parents": [
        "cc967be54710d97c05229b2e5ba2d00df84ddd64"
      ],
      "author": {
        "name": "Christoph Hellwig",
        "email": "hch@lst.de",
        "time": "Wed May 26 17:53:25 2010 +0200"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu May 27 22:05:02 2010 -0400"
      },
      "message": "drop unused dentry argument to -\u003efsync\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "0319003d0d229735770c185ddf132c666e9cd01a",
      "tree": "b6c7e8d10bc09816ae20711fac24fd5b9f63a4ca",
      "parents": [
        "89031bc79782a93fc65adabd0e123c89645bee6e"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sun Jan 31 21:02:09 2010 -0500"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Mar 03 14:07:58 2010 -0500"
      },
      "message": "nilfs really shouldn\u0027t slap struct dentry on stack...\n\n... especially when it only needs (and initializes) .d_name of it\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "828c09509b9695271bcbdc53e9fc9a6a737148d2",
      "tree": "072ffad6f02db7bf4095e07e2b90247cfa042998",
      "parents": [
        "1c4115e595dec42aa0e81ba47ef46e35b34ed428"
      ],
      "author": {
        "name": "Alexey Dobriyan",
        "email": "adobriyan@gmail.com",
        "time": "Thu Oct 01 15:43:56 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Oct 01 16:11:11 2009 -0700"
      },
      "message": "const: constify remaining file_operations\n\n[akpm@linux-foundation.org: fix KVM]\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nAcked-by: Mike Frysinger \u003cvapier@gentoo.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "6e1d5dcc2bbbe71dbf010c747e15739bef6b7218",
      "tree": "2edb0f6cc65acbae95e42df1bc763ec048e6c2e0",
      "parents": [
        "7f09410bbc4306f592cfb43812389ea1c7905a20"
      ],
      "author": {
        "name": "Alexey Dobriyan",
        "email": "adobriyan@gmail.com",
        "time": "Mon Sep 21 17:01:11 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Sep 22 07:17:24 2009 -0700"
      },
      "message": "const: mark remaining inode_operations as const\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7f09410bbc4306f592cfb43812389ea1c7905a20",
      "tree": "18f179435f70c4ec9231883501062d5ea0357af5",
      "parents": [
        "ac4cfdd6d141c319a7af8655f750ed504c187a74"
      ],
      "author": {
        "name": "Alexey Dobriyan",
        "email": "adobriyan@gmail.com",
        "time": "Mon Sep 21 17:01:10 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Sep 22 07:17:24 2009 -0700"
      },
      "message": "const: mark remaining address_space_operations const\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d441b1c293149212045de00f346c8ea6cd41cce4",
      "tree": "cbc7aa520feeabaa90ff4b8ff83e6e8fade216c7",
      "parents": [
        "5affd88a104af43f0063a12ad1ee4c7a587945dc"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Jun 08 19:56:34 2009 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Jun 24 08:17:05 2009 -0400"
      },
      "message": "switch nilfs2 to inode-\u003ei_acl\n\nActually, get rid of private analog, since nothing in there is\nusing ACLs at all so far.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "a53b4751ae92adb372017222887f3ec625cba60b",
      "tree": "454c0876bb532ee44ad07485e6d40c60e157ca34",
      "parents": [
        "30c25be71fcbd87fd33518045cc014e69bff3d6f"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Wed May 27 22:11:46 2009 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Wed Jun 10 23:41:12 2009 +0900"
      },
      "message": "nilfs2: use device\u0027s backing_dev_info for btree node caches\n\nPreviously, default_backing_dev_info was used for the mapping of btree\nnode caches.  This uses device dependent backing_dev_info to allow\ndetailed control of the device for the btree node pages.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "4f6b828837b4e3836f2c9ac2f0eab9773b6c1327",
      "tree": "9baa69b0ef44a0c604be831300fd5215c0355be0",
      "parents": [
        "47eb6b9c8fa963c9f49967ad1d9d7ec947d15b68"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Sun May 10 22:41:43 2009 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon May 11 14:54:41 2009 +0900"
      },
      "message": "nilfs2: fix lock order reversal in nilfs_clean_segments ioctl\n\nThis is a companion patch to (\"nilfs2: fix possible circular locking\nfor get information ioctls\").\n\nThis corrects lock order reversal between mm-\u003emmap_sem and\nnilfs-\u003ens_segctor_sem in nilfs_clean_segments() which was detected by\nlockdep check:\n\n \u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n [ INFO: possible circular locking dependency detected ]\n 2.6.30-rc3-nilfs-00003-g360bdc1 #7\n -------------------------------------------------------\n mmap/5294 is trying to acquire lock:\n  (\u0026nilfs-\u003ens_segctor_sem){++++.+}, at: [\u003cd0d0e846\u003e] nilfs_transaction_begin+0xb6/0x10c [nilfs2]\n\n but task is already holding lock:\n  (\u0026mm-\u003emmap_sem){++++++}, at: [\u003cc043700a\u003e] do_page_fault+0x1d8/0x30a\n\n which lock already depends on the new lock.\n\n the existing dependency chain (in reverse order) is:\n\n -\u003e #1 (\u0026mm-\u003emmap_sem){++++++}:\n        [\u003cc01470a5\u003e] __lock_acquire+0x1066/0x13b0\n        [\u003cc01474a9\u003e] lock_acquire+0xba/0xdd\n        [\u003cc01836bc\u003e] might_fault+0x68/0x88\n        [\u003cc023c61d\u003e] copy_from_user+0x2a/0x111\n        [\u003cd0d120d0\u003e] nilfs_ioctl_prepare_clean_segments+0x1d/0xf1 [nilfs2]\n        [\u003cd0d0e2aa\u003e] nilfs_clean_segments+0x6d/0x1b9 [nilfs2]\n        [\u003cd0d11f68\u003e] nilfs_ioctl+0x2ad/0x318 [nilfs2]\n        [\u003cc01a3be7\u003e] vfs_ioctl+0x22/0x69\n        [\u003cc01a408e\u003e] do_vfs_ioctl+0x460/0x499\n        [\u003cc01a4107\u003e] sys_ioctl+0x40/0x5a\n        [\u003cc01031a4\u003e] sysenter_do_call+0x12/0x38\n        [\u003cffffffff\u003e] 0xffffffff\n\n -\u003e #0 (\u0026nilfs-\u003ens_segctor_sem){++++.+}:\n        [\u003cc0146e0b\u003e] __lock_acquire+0xdcc/0x13b0\n        [\u003cc01474a9\u003e] lock_acquire+0xba/0xdd\n        [\u003cc0433f1d\u003e] down_read+0x2a/0x3e\n        [\u003cd0d0e846\u003e] nilfs_transaction_begin+0xb6/0x10c [nilfs2]\n        [\u003cd0cfe0e5\u003e] nilfs_page_mkwrite+0xe7/0x154 [nilfs2]\n        [\u003cc0183b0b\u003e] __do_fault+0x165/0x376\n        [\u003cc01855cd\u003e] handle_mm_fault+0x287/0x5d1\n        [\u003cc043712d\u003e] do_page_fault+0x2fb/0x30a\n        [\u003cc0435462\u003e] error_code+0x72/0x78\n        [\u003cffffffff\u003e] 0xffffffff\n\nwhere nilfs_clean_segments() holds:\n\n  nilfs-\u003ens_segctor_sem -\u003e copy_from_user()\n                             --\u003e page fault -\u003e mm-\u003emmap_sem\n\nAnd, page fault path may hold:\n\n  page fault -\u003e mm-\u003emmap_sem\n         --\u003e nilfs_page_mkwrite() -\u003e nilfs-\u003ens_segctor_sem\n\nEven though nilfs_clean_segments() does not perform write access on\ngiven user pages, it may cause deadlock because nilfs-\u003ens_segctor_sem\nis shared per device and mm-\u003emmap_sem can be shared with other tasks.\n\nTo avoid this problem, this patch moves all calls of copy_from_user()\noutside the nilfs-\u003ens_segctor_sem lock in the ioctl.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "e7a7402c0d392dcadc74cae8922f8fae4667605a",
      "tree": "cb0023291a09eb7689fb47a3d8cc1ead46465605",
      "parents": [
        "c2698e50e304cd29a7836f05452359a3306a405e"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Fri Mar 27 10:49:11 2009 +0900"
      },
      "committer": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 13 09:53:50 2009 +0900"
      },
      "message": "nilfs2: remove module version\n\nA MODULE_VERSION() macro has been used in out-of-tree nilfs modules,\nbut it\u0027s needless and not updated in tree.  So, this removes it along\nwith the version declaration.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\n"
    },
    {
      "commit": "612392307cb09e49051225092cbbd7049bd8db93",
      "tree": "401a227d0fae219aae7b682bb613bb388b4a7682",
      "parents": [
        "e339ad31f59925b48a92ee3947692fdf9758b8c7"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:02:00 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:20 2009 -0700"
      },
      "message": "nilfs2: support nanosecond timestamp\n\nAfter a review of user\u0027s feedback for finding out other compatibility\nissues, I found nilfs improperly initializes timestamps in inode;\nCURRENT_TIME was used there instead of CURRENT_TIME_SEC even though nilfs\ndidn\u0027t have nanosecond timestamps on disk.  A few users gave us the report\nthat the tar program sometimes failed to expand symbolic links on nilfs,\nand it turned out to be the cause.\n\nInstead of applying the above displacement, I\u0027ve decided to support\nnanosecond timestamps on this occation.  Fortunetaly, a needless 64-bit\nfield was in the nilfs_inode struct, and I found it\u0027s available for this\npurpose without impact for the users.\n\nSo, this will do the enhancement and resolve the tar problem.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e339ad31f59925b48a92ee3947692fdf9758b8c7",
      "tree": "6bb85c43bfd100b0a220c788c654f2f74ca553e4",
      "parents": [
        "cece552074c591970353ad48308d65f110aeaf28"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:01:59 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:20 2009 -0700"
      },
      "message": "nilfs2: introduce secondary super block\n\nThe former versions didn\u0027t have extra super blocks.  This improves the\nweak point by introducing another super block at unused region in tail of\nthe partition.\n\nThis doesn\u0027t break disk format compatibility; older versions just ingore\nthe secondary super block, and new versions just recover it if it doesn\u0027t\nexist.  The partition created by an old mkfs may not have unused region,\nbut in that case, the secondary super block will not be added.\n\nThis doesn\u0027t make more redundant copies of the super block; it is a future\nwork.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b",
      "tree": "f80e97297d5badebd31bbb17003d76a4ea30453a",
      "parents": [
        "2c2e52fc4fca251e68f90821c9ff5cb18be4df58"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:01:55 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:19 2009 -0700"
      },
      "message": "nilfs2: replace BUG_ON and BUG calls triggerable from ioctl\n\nPekka Enberg advised me:\n\u003e It would be nice if BUG(), BUG_ON(), and panic() calls would be\n\u003e converted to proper error handling using WARN_ON() calls. The BUG()\n\u003e call in nilfs_cpfile_delete_checkpoints(), for example, looks to be\n\u003e triggerable from user-space via the ioctl() system call.\n\nThis will follow the comment and keep them to a minimum.\n\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7a9461939a46345860622ea36ff267ee4446f00f",
      "tree": "5607ba81b9580e2979bcfb806d5b04f5fbfd53d9",
      "parents": [
        "8082d36aed26c4fb6ed43e4008303682eabf839e"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:01:53 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:19 2009 -0700"
      },
      "message": "nilfs2: use unlocked_ioctl\n\nPekka Enberg suggested converting -\u003eioctl operations to use\n-\u003eunlocked_ioctl to avoid BKL.\n\nThe conversion was verified to be safe, so I will take it on this\noccasion.\n\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "8082d36aed26c4fb6ed43e4008303682eabf839e",
      "tree": "d51eff46a3ebe29e0a445597570599b5b7c4a037",
      "parents": [
        "dc498d09be28172846cacded35ca2378222a8c7b"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:01:53 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:18 2009 -0700"
      },
      "message": "nilfs2: remove compat ioctl code\n\nThis removes compat code from the nilfs ioctls and applies the same\nfunction for both .ioctl and .compat_ioctl file operations.\n\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "47420c799830d4676e544dbec56b2a7f787528f5",
      "tree": "dd61f6c96942b07f762129c893d9cbbbeff60735",
      "parents": [
        "a2e7d2df82cafb76f76809ddf6e2caa8afe4f75e"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:01:45 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:17 2009 -0700"
      },
      "message": "nilfs2: avoid double error caused by nilfs_transaction_end\n\nPekka Enberg pointed out that double error handlings found after\nnilfs_transaction_end() can be avoided by separating abort operation:\n\n OK, I don\u0027t understand this. The only way nilfs_transaction_end() can\n fail is if we have NILFS_TI_SYNC set and we fail to construct the\n segment. But why do we want to construct a segment if we don\u0027t commit?\n\n I guess what I\u0027m asking is why don\u0027t we have a separate\n nilfs_transaction_abort() function that can\u0027t fail for the erroneous\n case to avoid this double error value tracking thing?\n\nThis does the separation and renames nilfs_transaction_end() to\nnilfs_transaction_commit() for clarification.\n\nSince, some calls of these functions were used just for exclusion control\nagainst the segment constructor, they are replaced with semaphore\noperations.\n\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "65b4643d3babeb203fa9571d12fd5e1bf74d27b0",
      "tree": "b9371b765ca1f52c8c7ba046f7cffea92e2bc722",
      "parents": [
        "eed10e39b142eb4d284c8e4c751c0eaaa0bcd707"
      ],
      "author": {
        "name": "Ryusuke Konishi",
        "email": "konishi.ryusuke@lab.ntt.co.jp",
        "time": "Mon Apr 06 19:01:23 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 07 08:31:12 2009 -0700"
      },
      "message": "nilfs2: add inode and other major structures\n\nThis adds the following common structures of the NILFS2 file system.\n\n* nilfs_inode_info structure:\n  gives on-memory inode.\n\n* nilfs_sb_info structure:\n  keeps per-mount state and a special inode for the ifile.\n  This structure is attached to the super_block structure.\n\n* the_nilfs structure:\n  keeps shared state and locks among a read/write mount and snapshot\n  mounts.  This keeps special inodes for the sufile, cpfile, dat, and\n  another dat inode used during GC (gcdat).  This also has a hash table\n  of dummy inodes to cache disk blocks during GC (gcinodes).\n\n* nilfs_transaction_info structure:\n  keeps per task state while nilfs is writing logs or doing indivisible\n  inode or namespace operations.  This structure is used to identify\n  context during log making and store nest level of the lock which\n  ensures atomicity of file system operations.\n\nSigned-off-by: Koji Sato \u003csato.koji@lab.ntt.co.jp\u003e\nSigned-off-by: Ryusuke Konishi \u003ckonishi.ryusuke@lab.ntt.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    }
  ]
}