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HWPOISON: Stop shrinking at right page count

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When we call the slab shrinker to free a page we need to stop at
page count one because the caller always holds a single reference, not zero.

This avoids useless looping over slab shrinkers and freeing too much
memory.

Reviewed-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
This commit is contained in:
Andi Kleen 2010-09-28 07:37:55 +02:00
parent 0d9ee6a2d4
commit 47f43e7efa
1 changed files with 1 additions and 1 deletions
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2
mm/memory-failure.c
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@ -235,7 +235,7 @@ void shake_page(struct page *p, int access)
int nr;
do {
nr = shrink_slab(1000, GFP_KERNEL, 1000);
if (page_count(p) == 0)
if (page_count(p) == 1)
break;
} while (nr > 10);
}