From: Christoph Lameter <clameter@sgi.com>

Add some comments explaining the fields of the kmem_cache_cpu structure.

Signed-off-by: Chrsitoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/slub_def.h |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff -puN include/linux/slub_def.h~slub-comment-kmem_cache_cpu-structure include/linux/slub_def.h
--- a/include/linux/slub_def.h~slub-comment-kmem_cache_cpu-structure
+++ a/include/linux/slub_def.h
@@ -12,12 +12,12 @@
 #include <linux/kobject.h>
 
 struct kmem_cache_cpu {
-	void **freelist;
-	struct page *page;
-	int node;
-	unsigned int offset;
-	unsigned int objsize;
-	unsigned int objects;
+	void **freelist;	/* Pointer to first free per cpu object */
+	struct page *page;	/* The slab from which we are allocating */
+	int node;		/* The node of the page (or -1 for debug) */
+	unsigned int offset;	/* Freepointer offset (in word units) */
+	unsigned int objsize;	/* Size of an object (from kmem_cache) */
+	unsigned int objects;	/* Objects per slab (from kmem_cache) */
 };
 
 struct kmem_cache_node {
_