tree 7d25f35cda1f37e30fd21bb2375f2693837d5ec5
parent a7560fc80f33cab33176ee78f146df22b28e3338
author Wu Fengguang <fengguang.wu@intel.com> 1260962397 +0100
committer Andi Kleen <ak@linux.intel.com> 1260962397 +0100

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>