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Diffstat (limited to 'Documentation/vm/hwpoison.txt')
| -rw-r--r-- | Documentation/vm/hwpoison.txt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/vm/hwpoison.txt b/Documentation/vm/hwpoison.txt index f454d3cd4d60..989e5afe740f 100644 --- a/Documentation/vm/hwpoison.txt +++ b/Documentation/vm/hwpoison.txt @@ -123,6 +123,22 @@ 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. +corrupt-filter-memcg + +Limit injection to pages owned by memgroup. Specified by inode number +of the memcg. + +Example: + mkdir /cgroup/hwpoison + + usemem -m 100 -s 1000 & + echo `jobs -p` > /cgroup/hwpoison/tasks + + memcg_ino=$(ls -id /cgroup/hwpoison | cut -f1 -d' ') + echo $memcg_ino > /debug/hwpoison/corrupt-filter-memcg + + page-types -p `pidof init` --hwpoison # shall do nothing + page-types -p `pidof usemem` --hwpoison # poison its pages corrupt-filter-flags-mask corrupt-filter-flags-value |