https://github.com/torvalds/linux
Revision c3921ab71507b108d51a0f1ee960f80cd668a93d authored by Linus Torvalds on 11 May 2008, 23:04:48 UTC, committed by Linus Torvalds on 11 May 2008, 23:04:48 UTC
It acts exactly like a regular 'cond_resched()', but will not get optimized away when CONFIG_PREEMPT is set. Normal kernel code is already preemptable in the presense of CONFIG_PREEMPT, so cond_resched() is optimized away (see commit 02b67cc3ba36bdba351d6c3a00593f4ec550d9d3 "sched: do not do cond_resched() when CONFIG_PREEMPT"). But when wanting to conditionally reschedule while holding a lock, you need to use "cond_sched_lock(lock)", and the new function is the BKL equivalent of that. Also make fs/locks.c use it. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Tip revision: c3921ab71507b108d51a0f1ee960f80cd668a93d authored by Linus Torvalds on 11 May 2008, 23:04:48 UTC
Add new 'cond_resched_bkl()' helper function
Add new 'cond_resched_bkl()' helper function
Tip revision: c3921ab
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