Commit 09761333 authored Dec 08, 2011 by Hillf Danton Committed by Linus Torvalds Dec 09, 2011

mm/migrate.c: pair unlock_page() and lock_page() when migrating huge pages



Avoid unlocking and unlocked page if we failed to lock it.

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.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 58a84aa9

mm/migrate.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -871,9 +871,9 @@ static int unmap_and_move_huge_page(new_page_t get_new_page,

		if (anon_vma)
		put_anon_vma(anon_vma);
		out:
		unlock_page(hpage);

		out:
		if (rc != -EAGAIN) {
		list_del(&hpage->lru);
		put_page(hpage);