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authorYaowei Bai <baiyaowei@cmss.chinamobile.com>2018-02-07 02:41:35 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-02-07 05:32:47 +0300
commitdb076bef2da1f81bf918fc0b24ebed5756fbae5a (patch)
treebf7e7a576a2d2866eb45890a9127cc37b3ed6025
parent171d864e75a9fa086c2a59b954945caaf6175396 (diff)
downloadlinux-db076bef2da1f81bf918fc0b24ebed5756fbae5a.tar.xz
kernel/mutex: mutex_is_locked can be boolean
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>
-rw-r--r--include/linux/mutex.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index 153274f78402..f25c13423bd4 100644
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -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