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authorOleg Nesterov <oleg@tv-sign.ru>2007-05-09 09:34:20 (GMT)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 19:30:53 (GMT)
commit85f4186af944c1240c84934a9ab578743df2d69b (patch)
tree743d6a619538cda98495aaaac67a86246d3007e4 /drivers/ata
parentb9aac8e0d32499217417ff0b494731811f185b18 (diff)
downloadlinux-85f4186af944c1240c84934a9ab578743df2d69b.tar.xz
worker_thread: fix racy try_to_freeze() usage
worker_thread() can miss freeze_process()->signal_wake_up() if it happens between try_to_freeze() and prepare_to_wait(). We should check freezing() before entering schedule(). This race was introduced by me in [PATCH 1/1] workqueue: don't migrate pending works from the dead CPU Looks like mm/vmscan.c:kswapd() has the same race. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/ata')
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