unlock+0x9/0xb
       [<ffffffffa0679673>] ocfs2_free_ac_resource+0x31/0x67 [ocfs2]
       [<ffffffffa067c6bc>] ocfs2_free_alloc_context+0x11/0x1d [ocfs2]
       [<ffffffffa0633de0>] ocfs2_write_begin_nolock+0x141e/0x159b [ocfs2]
       [<ffffffffa0635523>] ocfs2_write_begin+0x11e/0x1e7 [ocfs2]
       [<ffffffff820a1297>] generic_file_buffered_write+0x10c/0x210
       [<ffffffffa0653624>] ocfs2_file_aio_write+0x4cc/0x6d3 [ocfs2]
       [<ffffffff820d822d>] do_sync_write+0xc2/0x106
       [<ffffffff820d897b>] vfs_write+0xae/0x131
       [<ffffffff820d8e55>] sys_write+0x47/0x6f
       [<ffffffff8200296b>] system_call_fastpath+0x16/0x1b

-> #0 (&oi->ip_alloc_sem){+.+.+.}:
       [<ffffffff82063f92>] validate_chain+0x727/0xd68
       [<ffffffff82064d6d>] __lock_acquire+0x79a/0x7f1
       [<ffffffff82065a81>] lock_acquire+0xc6/0xed
       [<ffffffff82339694>] down_write+0x31/0x52
       [<ffffffffa0673b67>] ocfs2_reflink_ioctl+0x69a/0x1226 [ocfs2]
       [<ffffffffa06599f6>] ocfs2_ioctl+0x61a/0x656 [ocfs2]
       [<ffffffff820e53ac>] vfs_ioctl+0x2a/0x9d
       [<ffffffff820e5903>] do_vfs_ioctl+0x45d/0x4ae
       [<ffffffff820e59ab>] sys_ioctl+0x57/0x7a
       [<ffffffff8200296b>] system_call_fastpath+0x16/0x1b

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
É/IŰťAx