mm/hwpoison: fix fail isolate hugetlbfs page w/ refcount held

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[ Upstream commit 036138080a ]

Hugetlbfs pages will get a refcount in get_any_page() or
madvise_hwpoison() if soft offlining through madvise.  The refcount which
is held by the soft offline path should be released if we fail to isolate
hugetlbfs pages.

Fix it by reducing the refcount for both isolation success and failure.

Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: <stable@vger.kernel.org>	[3.9+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

...

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Wanpeng Li 2015-08-14 15:34:59 -07:00 • committed by Sasha Levin

parent 088873456a

commit 075ad72d35

1 changed files with 6 additions and 7 deletions

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mm/memory-failure.c

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