xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

HWPOISON: add fs/device filters

Browse Source 
Filesystem data/metadata present the most tricky-to-isolate pages.
It requires careful code review and stress testing to get them right.

The fs/device filter helps to target the stress tests to some specific
filesystem pages. The filter condition is block device's major/minor
numbers:
        - corrupt-filter-dev-major
        - corrupt-filter-dev-minor
When specified (non -1), only page cache pages that belong to that
device will be poisoned.

The filters are checked reliably on the locked and refcounted page.

Haicheng: clear PG_hwpoison and drop bad page count if filter not OK
AK: Add documentation

CC: Haicheng Li <haicheng.li@intel.com>
CC: Nick Piggin <npiggin@suse.de>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
This commit is contained in:
Wu Fengguang
2009-12-16 12:19:59 +01:00
committed by Andi Kleen
parent 138ce286eb
commit 7c116f2b0d
4 changed files with 72 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
Documentation/vm/hwpoison.txt
View File

@@ -115,6 +115,13 @@ memory failures.
Note these injection interfaces are not stable and might change between
kernel versions
corrupt-filter-dev-major
corrupt-filter-dev-minor
Only handle memory failures to pages associated with the file system defined
by block device major/minor. -1U is the wildcard value.
This should be only used for testing with artificial injection.
Architecture specific MCE injector
x86 has mce-inject, mce-test