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(parent: a978d6f) | patch
mm: page lock use lock bitops
authorNick Piggin <npiggin@suse.de>
Sun, 19 Oct 2008 03:26:59 +0000 (20:26 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 20 Oct 2008 15:52:32 +0000 (08:52 -0700)
commit8413ac9d8c9a1366a4f57880723126cd24e5a5c3
treefcee6ff670dcfccf895a48e92d27f52902d34301tree | snapshot
parenta978d6f521063514812a7094dbe5036e056e4de3commit | diff
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>
include/linux/pagemap.h diff | blob | history
mm/filemap.c diff | blob | history
mm/swapfile.c diff | blob | history
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