linux-kernel - [PATCH] missing atomic_read

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Message-ID: <20071029044255.GA8181@ftp.linux.org.uk>
Date:	Mon, 29 Oct 2007 04:42:55 +0000
From:	Al Viro <viro@....linux.org.uk>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] missing atomic_read_long() in slub.c

nr_slabs is atomic_long_t, not atomic_t

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
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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