From 3f9e7949f86dfe2bd9a1ad0604f78e7683c059de Mon Sep 17 00:00:00 2001
From: Hugh Dickins <hugh@veritas.com>
Date: Fri, 29 Sep 2006 02:01:26 -0700
Subject: [PATCH] [PATCH] valid_swaphandles() fix

akpm draws my attention to the fact that sysctl(VM_PAGE_CLUSTER) might
conceivably change page_cluster to 0 while valid_swaphandles() is in the
middle of using it, leading to an embarrassingly long loop: take a local
snapshot of page_cluster and work with that.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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