From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Date: Tue, 21 Jan 2014 23:49:46 +0000 (-0800)
Subject: mm/rmap: factor lock function out of rmap_walk_anon()
X-Git-Tag: v3.14-rc1~134^2~54
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=faecd8dd852d4e4a63a1b8ad43e5df8e41ee0336;p=pandora-kernel.git

mm/rmap: factor lock function out of rmap_walk_anon()

When we traverse anon_vma, we need to take a read-side anon_lock.  But
there is subtle difference in the situation so that we can't use same
method to take a lock in each cases.  Therefore, we need to make
rmap_walk_anon() taking difference lock function.

This patch is the first step, factoring lock function for anon_lock out
of rmap_walk_anon().  It will be used in case of removing migration
entry and in default of rmap_walk_anon().

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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