tree fcee6ff670dcfccf895a48e92d27f52902d34301
parent a978d6f521063514812a7094dbe5036e056e4de3
author Nick Piggin <npiggin@suse.de> 1224386819 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1224517952 -0700

mm: page lock use lock bitops

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

Also, mark trylock as likely to succeed (and remove the annotation from
callers).

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>