linux-kernel - [PATCH]slub: fix bad scope checking

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Message-Id: <1270114350.2078.111.camel@ymzhang.sh.intel.com>
Date:	Thu, 01 Apr 2010 17:32:30 +0800
From:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>
To:	Christoph Lameter <cl@...ux-foundation.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: [PATCH]slub: fix bad scope checking

Function init_kmem_cache_nodes is incorrect when checking upper limitation
of kmalloc_caches.

The patch against latest tip/master fixes it.

From: Zhang, Yanmin <yanmin_zhang@...ux.intel.com>

---

--- linux-2.6/mm/slub.c	2010-04-01 17:01:21.091999999 +0800
+++ linux-2.6_slub/mm/slub.c	2010-04-01 17:04:34.876000010 +0800
@@ -2153,7 +2153,7 @@ static int init_kmem_cache_nodes(struct 
 	int local_node;
 
 	if (slab_state >= UP && (s < kmalloc_caches ||
-			s > kmalloc_caches + KMALLOC_CACHES))
+			s >= kmalloc_caches + KMALLOC_CACHES))
 		local_node = page_to_nid(virt_to_page(s));
 	else
 		local_node = 0;


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