Commit ae026204 authored Feb 05, 2016 by Kirill A. Shutemov Committed by Linus Torvalds Feb 05, 2016

thp: make deferred_split_scan() work again



We need to iterate over split_queue, not local empty list to get
anything split from the shrinker.

Fixes: e3ae1953 ("thp: limit number of object to scan on deferred_split_scan()")
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 12352d3c

mm/huge_memory.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -3482,7 +3482,7 @@ static unsigned long deferred_split_scan(struct shrinker *shrink,

		spin_lock_irqsave(&pgdata->split_queue_lock, flags);
		/* Take pin on all head pages to avoid freeing them under us */
		list_for_each_safe(pos, next, &list) {
		list_for_each_safe(pos, next, &pgdata->split_queue) {
		page = list_entry((void *)pos, struct page, mapping);
		page = compound_head(page);
		if (get_page_unless_zero(page)) {