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(parent: 5dd2c4b) | patch
mm/hwpoison: fix failure to split thp w/ refcount held
authorWanpeng Li <wanpeng.li@hotmail.com>
Tue, 8 Sep 2015 22:03:10 +0000 (15:03 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 8 Sep 2015 22:35:28 +0000 (15:35 -0700)
commit7d1900c744b2e4687b3e467edf58373c02bcf22d
tree172e71a73d3b159dc2da1ca1fe344b59a3f5ce2ftree | snapshot
parent5dd2c4bded8776ee93c8f38b739fea531095067fcommit | diff
mm/hwpoison: fix failure to split thp w/ refcount held

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>
mm/memory-failure.c diff | blob | history
Domain: System / Kernel;