ocfs2: nowait aio support
authorGang He <ghe@suse.com>
Thu, 1 Feb 2018 00:15:25 +0000 (16:15 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 1 Feb 2018 01:18:35 +0000 (17:18 -0800)
commitc4c2416ab0d656539cca5de4ae0a2ba8ec3d9eca
tree043ac9760184a10a566f6ba415d37e5df93fa802
parentac604d3cdb20a12d67131d20095c4c7905aeb722
ocfs2: nowait aio support

Return EAGAIN if any of the following checks fail for direct I/O:

 - Cannot get the related locks immediately

 - Blocks are not allocated at the write location, it will trigger block
   allocation and block IO operations.

[ghe@suse.com: v4]
Link: http://lkml.kernel.org/r/1516007283-29932-4-git-send-email-ghe@suse.com
[ghe@suse.com: v2]
Link: http://lkml.kernel.org/r/1511944612-9629-4-git-send-email-ghe@suse.com
Link: http://lkml.kernel.org/r/1511775987-841-4-git-send-email-ghe@suse.com
Signed-off-by: Gang He <ghe@suse.com>
Reviewed-by: Alex Chen <alex.chen@huawei.com>
Cc: Mark Fasheh <mfasheh@versity.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <ge.changwei@h3c.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/ocfs2/dir.c
fs/ocfs2/dlmglue.c
fs/ocfs2/dlmglue.h
fs/ocfs2/file.c
fs/ocfs2/mmap.c
fs/ocfs2/ocfs2_trace.h