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authorHaicheng Li <haicheng.li@linux.intel.com>2009-12-16 12:19:59 +0100
committerAndi Kleen <ak@linux.intel.com>2009-12-16 12:19:59 +0100
commit1bfe5febe34d2be2120803c10720e179186357c9 (patch)
treed4d8b1dacc375a1004ab1ed508333bc33e46d9a9 /mm/internal.h
parent4fd466eb46a6a917c317a87fb94bfc7252a0f7ed (diff)
downloadvexpress-lsk-1bfe5febe34d2be2120803c10720e179186357c9.tar.gz
HWPOISON: add an interface to switch off/on all the page filters
In some use cases, user doesn't need extra filtering. E.g. user program can inject errors through madvise syscall to its own pages, however it might not know what the page state exactly is or which inode the page belongs to. So introduce an one-off interface "corrupt-filter-enable". Echo 0 to switch off page filters, and echo 1 to switch on the filters. [AK: changed default to 0] Signed-off-by: Haicheng Li <haicheng.li@linux.intel.com> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'mm/internal.h')
-rw-r--r--mm/internal.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h
index 5a6761bea6a..6a697bb97fc 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -258,3 +258,4 @@ extern u32 hwpoison_filter_dev_minor;
extern u64 hwpoison_filter_flags_mask;
extern u64 hwpoison_filter_flags_value;
extern u64 hwpoison_filter_memcg;
+extern u32 hwpoison_filter_enable;