)]}'
{
  "commit": "b6fac63cc1f52ec27f29fe6c6c8494a2ffac33fd",
  "tree": "78b4da8231fb80ea05fffc65c4647957b5a858fb",
  "parents": [
    "33e5d76979cf01e3834814fe0aea569d1d602c1a"
  ],
  "author": {
    "name": "Wu Fengguang",
    "email": "fengguang.wu@intel.com",
    "time": "Thu Apr 02 16:56:34 2009 -0700"
  },
  "committer": {
    "name": "Linus Torvalds",
    "email": "torvalds@linux-foundation.org",
    "time": "Thu Apr 02 19:04:48 2009 -0700"
  },
  "message": "vfs: skip I_CLEAR state inodes\n\nclear_inode() will switch inode state from I_FREEING to I_CLEAR, and do so\n_outside_ of inode_lock.  So any I_FREEING testing is incomplete without a\ncoupled testing of I_CLEAR.\n\nSo add I_CLEAR tests to drop_pagecache_sb(), generic_sync_sb_inodes() and\nadd_dquot_ref().\n\nMasayoshi MIZUMA discovered the bug in drop_pagecache_sb() and Jan Kara\nreminds fixing the other two cases.\n\nMasayoshi MIZUMA has a nice panic flow:\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\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n            [process A]               |        [process B]\n |                                    |\n |    prune_icache()                  | drop_pagecache()\n |      spin_lock(\u0026inode_lock)        |   drop_pagecache_sb()\n |      inode-\u003ei_state |\u003d I_FREEING;  |       |\n |      spin_unlock(\u0026inode_lock)      |       V\n |          |                         |     spin_lock(\u0026inode_lock)\n |          V                         |         |\n |      dispose_list()                |         |\n |        list_del()                  |         |\n |        clear_inode()               |         |\n |          inode-\u003ei_state \u003d I_CLEAR  |         |\n |            |                       |         V\n |            |                       |      if (inode-\u003ei_state \u0026 (I_FREEING|I_WILL_FREE))\n |            |                       |              continue;           \u003c\u003d\u003d\u003d\u003d NOT MATCH\n |            |                       |\n |            |                       | (DANGER from here on! Accessing disposing inode!)\n |            |                       |\n |            |                       |      __iget()\n |            |                       |        list_move() \u003c\u003d\u003d\u003d\u003d\u003d PANIC on poisoned list !!\n V            V                       |\n(time)\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\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\nReported-by: Masayoshi MIZUMA \u003cm.mizuma@jp.fujitsu.com\u003e\nReviewed-by: Jan Kara \u003cjack@suse.cz\u003e\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "44d725f612cf346ec2e4d9bf2801913de393b967",
      "old_mode": 33188,
      "old_path": "fs/drop_caches.c",
      "new_id": "b6a719a909f8eee1829764ea770e879c1c9c73fe",
      "new_mode": 33188,
      "new_path": "fs/drop_caches.c"
    },
    {
      "type": "modify",
      "old_id": "e3fe9918faafb710446f5bd73445eeca5ce5b0d7",
      "old_mode": 33188,
      "old_path": "fs/fs-writeback.c",
      "new_id": "f81f9e71871e6645e04746ec99c3682a272e275e",
      "new_mode": 33188,
      "new_path": "fs/fs-writeback.c"
    },
    {
      "type": "modify",
      "old_id": "2ca967a5ef77de2011d9896695bf80ad4f0e155b",
      "old_mode": 33188,
      "old_path": "fs/quota/dquot.c",
      "new_id": "607c579e5eca0cc0427c53a844d68ff159186e47",
      "new_mode": 33188,
      "new_path": "fs/quota/dquot.c"
    }
  ]
}