The patch titled
Subject: kernel/mutex: mutex_is_locked can be boolean
has been added to the -mm tree. Its filename is
kernel-mutex-mutex_is_locked-can-be-boolean.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kernel-mutex-mutex_is_locked-can-be-boolean.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kernel-mutex-mutex_is_locked-can-be-boolean.patch
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------------------------------------------------------
From: Yaowei Bai <baiyaowei@xxxxxxxxxxxxxxxxxxxx>
Subject: 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@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: Yaowei Bai <baiyaowei@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mutex.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN include/linux/mutex.h~kernel-mutex-mutex_is_locked-can-be-boolean include/linux/mutex.h
--- a/include/linux/mutex.h~kernel-mutex-mutex_is_locked-can-be-boolean
+++ a/include/linux/mutex.h
@@ -138,9 +138,9 @@ extern void __mutex_init(struct mutex *l
* 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
_
Patches currently in -mm which might be from baiyaowei@xxxxxxxxxxxxxxxxxxxx are
mm-memblock-memblock_is_map-region_memory-can-be-boolean.patch
lib-lockref-__lockref_is_dead-can-be-boolean.patch
kernel-cpuset-current_cpuset_is_being_rebound-can-be-boolean.patch
kernel-resource-iomem_is_exclusive-can-be-boolean.patch
kernel-module-module_is_live-can-be-boolean.patch
kernel-mutex-mutex_is_locked-can-be-boolean.patch
crash_dump-is_kdump_kernel-can-be-boolean.patch
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