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(parent: a7560fc) | patch
HWPOISON: avoid grabbing the page count multiple times during madvise injection
authorWu Fengguang <fengguang.wu@intel.com>
Wed, 16 Dec 2009 11:19:57 +0000 (12:19 +0100)
committerAndi Kleen <ak@linux.intel.com>
Wed, 16 Dec 2009 11:19:57 +0000 (12:19 +0100)
commitbd1ce5f91f545730df4af492f774d9d32f5da3cb
tree7d25f35cda1f37e30fd21bb2375f2693837d5ec5tree | snapshot (tar.gz zip)
parenta7560fc80f33cab33176ee78f146df22b28e3338commit | diff
HWPOISON: avoid grabbing the page count multiple times during madvise injection

If page is double referenced in madvise_hwpoison() and __memory_failure(),
remove_mapping() will fail because it expects page_count=2. Fix it by
not grabbing extra page count in __memory_failure().

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
mm/madvise.c diff | blob | blame | history
mm/memory-failure.c diff | blob | blame | history