HWPOISON: Handle hardware poisoned pages in try_to_unmap
authorAndi Kleen <ak@linux.intel.com>
Wed, 16 Sep 2009 09:50:11 +0000 (11:50 +0200)
committerAndi Kleen <ak@linux.intel.com>
Wed, 16 Sep 2009 09:50:11 +0000 (11:50 +0200)
commit888b9f7c58ebe8303bad817cd554df887a683957
treeebd01e55f5a6631a463fbb863adfbe9dcf49ad7d
parent14fa31b89c5ae79e4131da41761378a6df674352
HWPOISON: Handle hardware poisoned pages in try_to_unmap

When a page has the poison bit set replace the PTE with a poison entry.
This causes the right error handling to be done later when a process runs
into it.

v2: add a new flag to not do that (needed for the memory-failure handler
later) (Fengguang)
v3: remove unnecessary is_migration_entry() test (Fengguang, Minchan)

Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Reviewed-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
include/linux/rmap.h
mm/rmap.c