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Introduce down_killable()

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down_killable() is the functional counterpart of mutex_lock_killable.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
This commit is contained in:
Matthew Wilcox
2008-03-14 13:19:33 -04:00
committed by Matthew Wilcox
parent 64ac24e738
commit f06d968658
2 changed files with 28 additions and 0 deletions
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6
include/linux/semaphore.h
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@@ -61,6 +61,12 @@ extern void down(struct semaphore *sem);
*/
extern int __must_check down_interruptible(struct semaphore *sem);
/*
* As down_interruptible(), except the sleep may only be interrupted by
* signals which are fatal to this process.
*/
extern int __must_check down_killable(struct semaphore *sem);
/*
* As down(), except this function will not sleep. It will return 0 if it
* acquired the semaphore and 1 if the semaphore was contended. This