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| author | Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> | 2017-05-03 23:56:19 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-04 00:52:12 +0200 |
| commit | 8bcb74de764aaa261d6af3ce5ac723e435f00ff4 (patch) | |
| tree | 614316758c5c70378ce2fcf40d3c40b2c5d871a9 /mm/hwpoison-inject.c | |
| parent | mm/swapfile.c: fix swap space leak in error path of swap_free_entries() (diff) | |
| download | linux-8bcb74de764aaa261d6af3ce5ac723e435f00ff4.tar.xz linux-8bcb74de764aaa261d6af3ce5ac723e435f00ff4.zip | |
mm: hwpoison: call shake_page() unconditionally
shake_page() is called before going into core error handling code in
order to ensure that the error page is flushed from lru_cache lists
where pages stay during transferring among LRU lists.
But currently it's not fully functional because when the page is linked
to lru_cache by calling activate_page(), its PageLRU flag is set and
shake_page() is skipped. The result is to fail error handling with
"still referenced by 1 users" message.
When the page is linked to lru_cache by isolate_lru_page(), its PageLRU
is clear, so that's fine.
This patch makes shake_page() unconditionally called to avoild the
failure.
Fixes: 23a003bfd23ea9ea0b7756b920e51f64b284b468 ("mm/madvise: pass return code of memory_failure() to userspace")
Link: http://lkml.kernel.org/r/20170417055948.GM31394@yexl-desktop
Link: http://lkml.kernel.org/r/1493197841-23986-2-git-send-email-n-horiguchi@ah.jp.nec.com
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Xiaolong Ye <xiaolong.ye@intel.com>
Cc: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/hwpoison-inject.c')
| -rw-r--r-- | mm/hwpoison-inject.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c index 9d26fd9fefe4..356df057a2a8 100644 --- a/mm/hwpoison-inject.c +++ b/mm/hwpoison-inject.c @@ -34,8 +34,7 @@ static int hwpoison_inject(void *data, u64 val) if (!hwpoison_filter_enable) goto inject; - if (!PageLRU(hpage) && !PageHuge(p)) - shake_page(hpage, 0); + shake_page(hpage, 0); /* * This implies unable to support non-LRU pages. */ |