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| author | Tejun Heo <htejun@gmail.com> | 2006-01-12 15:39:26 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-12 09:05:39 -0800 |
| commit | 1bc691d357c646700b9523d2aeca02847d3fb3f4 (patch) | |
| tree | 430e13982f894c44e4a33dee188b3c718ec989ed /mm | |
| parent | 593195f9b2309693f27b402f34573f7920b82c3e (diff) | |
| download | linux-1bc691d357c646700b9523d2aeca02847d3fb3f4.tar.gz | |
[PATCH] fix queue stalling while barrier sequencing
If ordered tag isn't supported, request ordering for barrier
sequencing is performed by queue draining, which basically hangs the
request queue until elv_completed_request() reports completion of all
previous fs requests.
The condition check in elv_completed_request() was only performed for
fs requests. If a special request is queued between the last
to-be-drained request and the barrier sequence, draining is never
completed and the queue is stalled forever.
This patch moves the end-of-draining condition check such that it's
performed for all requests.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions