From: Wanpeng Li <[email protected]> Subject: mm/hwpoison: fix page refcount of unknown non LRU page
After trying to drain pages from pagevec/pageset, we try to get reference count of the page again, however, the reference count of the page is not reduced if the page is still not on LRU list. Fix it by adding the put_page() to drop the page reference which is from __get_any_page(). Signed-off-by: Wanpeng Li <[email protected]> Acked-by: Naoya Horiguchi <[email protected]> Cc: <[email protected]> [3.9+] Signed-off-by: Andrew Morton <[email protected]> --- mm/memory-failure.c | 2 ++ 1 file changed, 2 insertions(+) diff -puN mm/memory-failure.c~mm-hwpoison-fix-page-refcount-of-unkown-non-lru-page mm/memory-failure.c --- a/mm/memory-failure.c~mm-hwpoison-fix-page-refcount-of-unkown-non-lru-page +++ a/mm/memory-failure.c @@ -1538,6 +1538,8 @@ static int get_any_page(struct page *pag */ ret = __get_any_page(page, pfn, 0); if (!PageLRU(page)) { + /* Drop page reference which is from __get_any_page() */ + put_page(page); pr_info("soft_offline: %#lx: unknown non LRU page type %lx\n", pfn, page->flags); return -EIO; _ -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
