From deed62edffe600bc5b379c872d3004116e001b66 Mon Sep 17 00:00:00 2001
From: Nick Piggin <npiggin@suse.de>
Date: Tue, 15 Sep 2009 21:32:58 +0200
Subject: [PATCH] writeback: remove smp_mb(), it's not needed with
 list_add_tail_rcu()

list_add_tail_rcu contains required barriers.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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Reading git-format-patch failed