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| author | Jeff Moyer <jmoyer@redhat.com> | 2007-10-17 02:27:20 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-17 11:42:53 -0400 |
| commit | 41d10da3717409de33d5441f2f6d8f072ab3fbb6 (patch) | |
| tree | 4822afef881132248a7c91ba6eb33065f3209f2b /fs/read_write.h | |
| parent | c17ac85504efec5f3a9b0c5b05bffd6f30e5b655 (diff) | |
aio: account I/O wait time properly
Some months back I proposed changing the schedule() call in
read_events to an io_schedule():
http://osdir.com/ml/linux.kernel.aio.general/2006-10/msg00024.html
This was rejected as there are AIO operations that do not initiate
disk I/O. I've had another look at the problem, and the only AIO
operation that will not initiate disk I/O is IOCB_CMD_NOOP. However,
this command isn't even wired up!
Given that it doesn't work, and hasn't for *years*, I'm going to
suggest again that we do proper I/O accounting when using AIO.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Acked-by: Zach Brown <zach.brown@oracle.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Suparna Bhattacharya <suparna@in.ibm.com>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/read_write.h')
0 files changed, 0 insertions, 0 deletions