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(parent: a626ca6) | patch
block: don't flush plugged IO on forced preemtion scheduling
authorLinus Torvalds <torvalds@linux-foundation.org>
Wed, 13 Apr 2011 15:08:20 +0000 (08:08 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 13 Apr 2011 15:08:20 +0000 (08:08 -0700)
commit6631e635c65dc33cb798cc2f51d0ddd69ada6319
treec71585118b3ddd42b1bf666fef9f96e60b79f757tree | snapshot (tar.gz zip)
parenta626ca6a656450e9f4df91d0dda238fff23285f4commit | diff
block: don't flush plugged IO on forced preemtion scheduling

We really only want to unplug the pending IO when the process actually
goes to sleep.  So move the test for flushing the plug up to the place
where we actually deactivate the task - where we have properly checked
for preemption and for the process really sleeping.

Acked-by: Jens Axboe <jaxboe@fusionio.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kernel/sched.c diff | blob | blame | history
kernel source for telekom puls (alcatel/mediatek)