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TOMOYO: Replace rw_semaphore by mutex.
authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Sun, 3 Jan 2010 12:16:32 +0000 (21:16 +0900)
committerJames Morris <jmorris@namei.org>
Sun, 10 Jan 2010 20:57:44 +0000 (07:57 +1100)
Since readers no longer use down_read(), writers no longer
need to use rw_semaphore. Replace individual rw_semaphore by
single mutex.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>

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