diff options
| author |   Arjan van de Ven <arjan@linux.intel.com> | 2008-10-29 14:24:09 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-10-30 19:55:00 +0100 |
| commit | d98d38f2014ab79f28c126ff175d034891f7aefc (patch) | |
| tree | 4c23b3c5e202b3ecb0ba35f167da6c204cbd862d /include/linux/mutex.h | |
| parent | Merge commit 'v2.6.28-rc2' into core/locking (diff) | |
| download | linux-dev-d98d38f2014ab79f28c126ff175d034891f7aefc.tar.xz linux-dev-d98d38f2014ab79f28c126ff175d034891f7aefc.zip | |
mutex: improve header comment to be actually informative about the API
Impact: improve documentation
It's nice to say that mutex_trylock follows the spin_trylock convention.
It's a lot nicer if the comment also says which that is... make it so.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/mutex.h')
| -rw-r--r-- | include/linux/mutex.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mutex.h b/include/linux/mutex.h index bc6da10ceee0..7a0e5c4f8072 100644 --- a/include/linux/mutex.h +++ b/include/linux/mutex.h @@ -144,6 +144,8 @@ extern int __must_check mutex_lock_killable(struct mutex *lock); /* * NOTE: mutex_trylock() follows the spin_trylock() convention, * not the down_trylock() convention! + * + * Returns 1 if the mutex has been acquired successfully, and 0 on contention. */ extern int mutex_trylock(struct mutex *lock); extern void mutex_unlock(struct mutex *lock); |