From: Andi Kleen <andi@firstfloor.org>
To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, fengguang.wu@intel.com
Subject: [PATCH] [11/16] HWPOISON: Handle poisoned pages in set_page_dirty()
Date: Fri, 29 May 2009 23:35:37 +0200 (CEST) [thread overview]
Message-ID: <20090529213537.2D2951D0294@basil.firstfloor.org> (raw)
In-Reply-To: <200905291135.124267638@firstfloor.org>
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@linux.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
--
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next prev parent reply other threads:[~2009-05-29 21:35 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-29 21:35 [PATCH] [0/16] HWPOISON: Intro Andi Kleen
2009-05-29 21:35 ` [PATCH] [1/16] HWPOISON: Add page flag for poisoned pages Andi Kleen
2009-05-29 21:52 ` Alan Cox
2009-05-29 21:35 ` [PATCH] [2/16] HWPOISON: Export poison flag in /proc/kpageflags Andi Kleen
2009-05-29 21:35 ` [PATCH] [3/16] HWPOISON: Export some rmap vma locking to outside world Andi Kleen
2009-05-29 21:35 ` [PATCH] [4/16] HWPOISON: Add support for poison swap entries v2 Andi Kleen
2009-05-29 21:35 ` [PATCH] [5/16] HWPOISON: Add new SIGBUS error codes for hardware poison signals Andi Kleen
2009-05-29 21:35 ` [PATCH] [6/16] HWPOISON: Add basic support for poisoned pages in fault handler v3 Andi Kleen
2009-05-29 21:35 ` [PATCH] [7/16] HWPOISON: Add various poison checks in mm/memory.c Andi Kleen
2009-05-29 21:35 ` [PATCH] [8/16] HWPOISON: x86: Add VM_FAULT_HWPOISON handling to x86 page fault handler Andi Kleen
2009-05-29 21:35 ` [PATCH] [9/16] HWPOISON: Use bitmask/action code for try_to_unmap behaviour Andi Kleen
2009-05-29 21:35 ` [PATCH] [10/16] HWPOISON: Handle hardware poisoned pages in try_to_unmap Andi Kleen
2009-05-29 21:35 ` Andi Kleen [this message]
2009-05-29 21:35 ` [PATCH] [12/16] HWPOISON: check and isolate corrupted free pages Andi Kleen
2009-05-29 21:35 ` [PATCH] [13/16] HWPOISON: The high level memory error handler in the VM v4 Andi Kleen
2009-06-01 11:16 ` Nick Piggin
2009-06-01 12:46 ` Wu Fengguang
2009-05-29 21:35 ` [PATCH] [14/16] HWPOISON: FOR TESTING: Enable memory failure code unconditionally Andi Kleen
2009-05-29 21:35 ` [PATCH] [15/16] HWPOISON: Add madvise() based injector for hardware poisoned pages v3 Andi Kleen
2009-05-29 21:35 ` [PATCH] [16/16] HWPOISON: Add simple debugfs interface to inject hwpoison on arbitary PFNs Andi Kleen
2009-05-29 21:52 ` [PATCH] [0/16] HWPOISON: Intro Alan Cox
2009-05-29 22:24 ` Andi Kleen
2009-05-30 6:37 ` More thoughts about hwpoison and pageflags compression Andi Kleen
2009-05-30 6:53 ` Andrew Morton
2009-05-30 7:27 ` Andi Kleen
2009-05-30 7:29 ` Andrew Morton
2009-05-30 7:55 ` Andi Kleen
-- strict thread matches above, loose matches on Subject: below --
2009-05-27 20:12 [PATCH] [0/16] HWPOISON: Intro Andi Kleen
2009-05-27 20:12 ` [PATCH] [11/16] HWPOISON: Handle poisoned pages in set_page_dirty() Andi Kleen
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