tree 7d01d39f5eb5ac601d95c1e133492bd83135af6c
parent 8413ac9d8c9a1366a4f57880723126cd24e5a5c3
author Nick Piggin <npiggin@suse.de> 1224386820 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1224517952 -0700

fs: buffer lock use lock bitops

trylock_buffer and unlock_buffer open and close a critical section.
Hence, we can use the lock bitops to get the desired memory ordering.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>