linux-kernel - [PATCH] Fix warning in mm/slub.c

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Message-ID: <20071023042153.GA20693@lixom.net>
Date:	Mon, 22 Oct 2007 23:21:53 -0500
From:	Olof Johansson <olof@...om.net>
To:	Yasunori Goto <y-goto@...fujitsu.com>
Cc:	Andrew Morton <akpm@...l.org>,
	Christoph Lameter <clameter@....com>,
	Linux Kernel ML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>
Subject: [PATCH] Fix warning in mm/slub.c

Hi,

"Make kmem_cache_node for SLUB on memory online to avoid panic" introduced
the following:

mm/slub.c:2737: warning: passing argument 1 of 'atomic_read' from
incompatible pointer type


Signed-off-by: Olof Johansson <olof@...om.net>


diff --git a/mm/slub.c b/mm/slub.c
index aac1dd3..bcdb2c8 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2734,7 +2734,7 @@ static void slab_mem_offline_callback(void *arg)
 			 * and offline_pages() function shoudn't call this
 			 * callback. So, we must fail.
 			 */
-			BUG_ON(atomic_read(&n->nr_slabs));
+			BUG_ON(atomic_long_read(&n->nr_slabs));
 
 			s->node[offline_node] = NULL;
 			kmem_cache_free(kmalloc_caches, n);
-
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