linux-kernel - [PATCH] [25/31] HWPOISON: Don't do early filtering if filter is disabled

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Date:	Tue,  8 Dec 2009 22:16:41 +0100 (CET)
From:	Andi Kleen <andi@...stfloor.org>
To:	fengguang.wu@...el.com, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: [PATCH] [25/31] HWPOISON: Don't do early filtering if filter is disabled


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

---
 mm/hwpoison-inject.c |    3 +++
 1 file changed, 3 insertions(+)

Index: linux/mm/hwpoison-inject.c
===================================================================
--- linux.orig/mm/hwpoison-inject.c
+++ linux/mm/hwpoison-inject.c
@@ -18,6 +18,8 @@ static int hwpoison_inject(void *data, u
 	if (!capable(CAP_SYS_ADMIN))
 		return -EPERM;
 
+	if (!hwpoison_filter_enable)
+		goto inject;
 	if (!pfn_valid(pfn))
 		return -ENXIO;
 
@@ -48,6 +50,7 @@ static int hwpoison_inject(void *data, u
 	if (err)
 		return 0;
 
+inject:
 	printk(KERN_INFO "Injecting memory failure at pfn %lx\n", pfn);
 	return __memory_failure(pfn, 18, MF_COUNT_INCREASED);
 }
--
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