Commit cf2a82ee authored Feb 05, 2016 by Kirill A. Shutemov Committed by Linus Torvalds Feb 05, 2016

mm: downgrade VM_BUG in isolate_lru_page() to warning

Calling isolate_lru_page() is wrong and shouldn't happen, but it not
nessesary fatal: the page just will not be isolated if it's not on LRU.

Let's downgrade the VM_BUG_ON_PAGE() to WARN_RATELIMIT().

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 77bf45e7

mm/vmscan.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1443,7 +1443,7 @@ int isolate_lru_page(struct page *page)
		int ret = -EBUSY;

		VM_BUG_ON_PAGE(!page_count(page), page);
		VM_BUG_ON_PAGE(PageTail(page), page);
		WARN_RATELIMIT(PageTail(page), "trying to isolate tail page");

		if (PageLRU(page)) {
		struct zone *zone = page_zone(page);