tree c138e92f301f6f10ca684c1d83126928452f0ffa
parent d1908362ae0b97374eb8328fbb471576332f9fb1
author Jan Kara <jack@suse.cz> 1285185903 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1285201359 -0700

aio: do not return ERESTARTSYS as a result of AIO

OCFS2 can return ERESTARTSYS from its write function when the process is
signalled while waiting for a cluster lock (and the filesystem is mounted
with intr mount option).  Generally, it seems reasonable to allow
filesystems to return this error code from its IO functions.  As we must
not leak ERESTARTSYS (and similar error codes) to userspace as a result of
an AIO operation, we have to properly convert it to EINTR inside AIO code
(restarting the syscall isn't really an option because other AIO could
have been already submitted by the same io_submit syscall).

Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Zach Brown <zach.brown@oracle.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>