A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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HWPOISON: add an interface to switch off/on all the page filters

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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 <[email protected]>
Signed-off-by: Wu Fengguang <[email protected]>
Signed-off-by: Andi Kleen <[email protected]>
This commit is contained in:
Haicheng Li 2009-12-16 12:19:59 +01:00 • committed by Andi Kleen
commit 1bfe5febe3
3 changed files with 11 additions and 0 deletions
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1
mm/internal.h
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@ -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;