diff options
| author | Andrew Morton <akpm@digeo.com> | 2003-02-11 21:06:07 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@penguin.transmeta.com> | 2003-02-11 21:06:07 -0800 |
| commit | 4009595207da2ed3c2e81213fd4f297917d4d49d (patch) | |
| tree | b7870f33a9c129c9e77a19eee50e4bb27c1c0228 /include | |
| parent | 23a37cf9c4d85562a6beec92596ab212c610d01f (diff) | |
[PATCH] provide uniproc write_trylock()
Patch from Oleg Drokin <green@namesys.com>, Nikita Danilov <Nikita@Namesys.COM>
There is no uniprocessor definition of _raw_write_trylock(), so
write_trylock() doesn't work on UP.
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/spinlock.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index a289a20a2484..a16b041fee5b 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -179,6 +179,7 @@ typedef struct { #define _raw_read_unlock(lock) do { (void)(lock); } while(0) #define _raw_write_lock(lock) do { (void)(lock); } while(0) #define _raw_write_unlock(lock) do { (void)(lock); } while(0) +#define _raw_write_trylock(lock) ({ (void)(lock); (1); }) #endif /* !SMP */ |