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author | Tejun Heo <htejun@gmail.com> | 2006-01-12 14:39:26 (GMT) |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-12 17:05:39 (GMT) |
commit | 1bc691d357c646700b9523d2aeca02847d3fb3f4 (patch) | |
tree | 430e13982f894c44e4a33dee188b3c718ec989ed /mm/mempolicy.c | |
parent | 593195f9b2309693f27b402f34573f7920b82c3e (diff) | |
download | linux-1bc691d357c646700b9523d2aeca02847d3fb3f4.tar.xz |
[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/mempolicy.c')
0 files changed, 0 insertions, 0 deletions