mm/hwpoison: fix failure to split thp w/ refcount held

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THP pages will get a refcount in madvise_hwpoison() w/
MF_COUNT_INCREASED flag, however, the refcount is still held when fail
to split THP pages.

Fix it by reducing the refcount of THP pages when fail to split THP.

Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Wanpeng Li 2015-09-08 15:03:10 -07:00 • committed by Linus Torvalds

parent 5dd2c4bded

commit 7d1900c744

1 changed files with 2 additions and 0 deletions

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mm/memory-failure.c

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