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-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20090529213537.2D2951D0294@basil.firstfloor.org>
Date:	Fri, 29 May 2009 23:35:37 +0200 (CEST)
From:	Andi Kleen <andi@...stfloor.org>
To:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, fengguang.wu@...el.com
Subject: [PATCH] [11/16] HWPOISON: Handle poisoned pages in set_page_dirty()


Bail out early in set_page_dirty for poisoned pages. We don't want any
of the dirty accounting done or file system write back started, because
the page will be just thrown away.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>

---
 mm/page-writeback.c |    4 ++++
 1 file changed, 4 insertions(+)

Index: linux/mm/page-writeback.c
===================================================================
--- linux.orig/mm/page-writeback.c	2009-05-29 23:32:08.000000000 +0200
+++ linux/mm/page-writeback.c	2009-05-29 23:32:10.000000000 +0200
@@ -1277,6 +1277,10 @@
 {
 	struct address_space *mapping = page_mapping(page);
 
+	if (unlikely(PageHWPoison(page))) {
+		SetPageDirty(page);
+		return 0;
+	}
 	if (likely(mapping)) {
 		int (*spd)(struct page *) = mapping->a_ops->set_page_dirty;
 #ifdef CONFIG_BLOCK
--
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/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ