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authorAndi Kleen <ak@linux.intel.com>2009-09-16 13:50:11 +0400
committerAndi Kleen <ak@linux.intel.com>2009-09-16 13:50:11 +0400
commit888b9f7c58ebe8303bad817cd554df887a683957 (patch)
treeebd01e55f5a6631a463fbb863adfbe9dcf49ad7d /include/linux/rmap.h
parent14fa31b89c5ae79e4131da41761378a6df674352 (diff)
downloadlinux-888b9f7c58ebe8303bad817cd554df887a683957.tar.xz
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>
Diffstat (limited to 'include/linux/rmap.h')
-rw-r--r--include/linux/rmap.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index 4c4a2d4d289e..ce989f1fc2ed 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -93,6 +93,7 @@ enum ttu_flags {
TTU_IGNORE_MLOCK = (1 << 8), /* ignore mlock */
TTU_IGNORE_ACCESS = (1 << 9), /* don't age */
+ TTU_IGNORE_HWPOISON = (1 << 10),/* corrupted page is recoverable */
};
#define TTU_ACTION(x) ((x) & TTU_ACTION_MASK)