Commit b8522ead authored May 09, 2007 by Andrew Morton Committed by Linus Torvalds May 09, 2007

aio is unlikely



Stick an unlikely() around is_aio(): I assert that most IO is synchronous.

Cc: Suparna Bhattacharya <suparna@in.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Zach Brown <zach.brown@oracle.com>
Cc: Ulrich Drepper <drepper@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent b41eeef1

include/linux/aio.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -226,7 +226,8 @@ int FASTCALL(io_submit_one(struct kioctx ctx, struct iocb __user user_iocb,
		__put_ioctx(kioctx); \
		} while (0)

		#define in_aio() !is_sync_wait(current->io_wait)
		#define in_aio() (unlikely(!is_sync_wait(current->io_wait)))

		/* may be used for debugging */
		#define warn_if_async() \
		do { \