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| author | Wu Fengguang <fengguang.wu@intel.com> | 2009-12-16 12:19:58 +0100 |
|---|---|---|
| committer | Andi Kleen <ak@linux.intel.com> | 2009-12-16 12:19:58 +0100 |
| commit | 847ce401df392b0704369fd3f75df614ac1414b4 (patch) | |
| tree | 7c5021386dedea0d12f8a05b00c5267c4d28e426 /include/linux/page-flags.h | |
| parent | 8d22ba1b74aa9420b6032d856446564fb21f8090 (diff) | |
| download | linux-847ce401df392b0704369fd3f75df614ac1414b4.tar.gz linux-847ce401df392b0704369fd3f75df614ac1414b4.tar.bz2 linux-847ce401df392b0704369fd3f75df614ac1414b4.zip | |
HWPOISON: Add unpoisoning support
The unpoisoning interface is useful for stress testing tools to
reclaim poisoned pages (to prevent OOM)
There is no hardware level unpoisioning, so this
cannot be used for real memory errors, only for software injected errors.
Note that it may leak pages silently - those who have been removed from
LRU cache, but not isolated from page cache/swap cache at hwpoison time.
Especially the stress test of dirty swap cache pages shall reboot system
before exhausting memory.
AK: Fix comments, add documentation, add printks, rename symbol
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'include/linux/page-flags.h')
| -rw-r--r-- | include/linux/page-flags.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 49e907bd067f..f9df6308af95 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -275,7 +275,7 @@ PAGEFLAG_FALSE(Uncached) #ifdef CONFIG_MEMORY_FAILURE PAGEFLAG(HWPoison, hwpoison) -TESTSETFLAG(HWPoison, hwpoison) +TESTSCFLAG(HWPoison, hwpoison) #define __PG_HWPOISON (1UL << PG_hwpoison) #else PAGEFLAG_FALSE(HWPoison) |