linux-kernel - [PATCH] mm: migration: pair unlock_page and lock

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAJd=RBChfVC4hUKvO5ks0+NxahTgibdivLotw3VpAa7_-r8_+g@mail.gmail.com>
Date:	Fri, 25 Nov 2011 20:20:31 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
Cc:	Andrea Arcangeli <aarcange@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org
Subject: [PATCH] mm: migration: pair unlock_page and lock_page when migrating
 huge pages

Skip unlocking page if fail to lock, then lock and unlock are paired.

Signed-off-by: Hillf Danton <dhillf@...il.com>
---

--- a/mm/migrate.c	Fri Nov 25 20:11:14 2011
+++ b/mm/migrate.c	Fri Nov 25 20:21:26 2011
@@ -869,9 +869,9 @@ static int unmap_and_move_huge_page(new_

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

+out:
 	if (rc != -EAGAIN) {
 		list_del(&hpage->lru);
 		put_page(hpage);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/