From: Nick Piggin <npiggin@suse.de>
Date: Sun, 19 Oct 2008 03:27:00 +0000 (-0700)
Subject: fs: buffer lock use lock bitops
X-Git-Tag: v2.6.28-rc1~217
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=51b07fc3c5c830bb49c80fc5eac041e1f66a72e7;p=pandora-kernel.git

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>
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