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kernel/mutex: mutex_is_locked can be boolean

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Make mutex_is_locked return bool due to this particular function only
using either one or zero as its return value.

No functional change.

Link: http://lkml.kernel.org/r/1513266622-15860-7-git-send-email-baiyaowei@cmss.chinamobile.com
Signed-off-by: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Yaowei Bai 2018-02-06 15:41:35 -08:00 committed by Linus Torvalds
parent 171d864e75
commit db076bef2d
1 changed files with 2 additions and 2 deletions
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4
include/linux/mutex.h
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@ -138,9 +138,9 @@ extern void __mutex_init(struct mutex *lock, const char *name,
* mutex_is_locked - is the mutex locked
* @lock: the mutex to be queried
*
* Returns 1 if the mutex is locked, 0 if unlocked.
* Returns true if the mutex is locked, false if unlocked.
*/
static inline int mutex_is_locked(struct mutex *lock)
static inline bool mutex_is_locked(struct mutex *lock)
{
/*
* XXX think about spin_is_locked