Commit bb5b8589 authored Jan 14, 2016 by Kirill A. Shutemov Committed by Linus Torvalds Jan 14, 2016

mm: make sure isolate_lru_page() is never called for tail page



The VM_BUG_ON_PAGE() would catch such cases if any still exists.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 0eb77e98

mm/vmscan.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1426,6 +1426,7 @@ 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);

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