From: Christoph Lameter <clameter@sgi.com>
Date: Tue, 8 Jan 2008 07:20:31 +0000 (-0800)
Subject: Explain kmem_cache_cpu fields
X-Git-Tag: v2.6.25-rc1~1056^2
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=da89b79ed06bac8e9b5b6874d4efc5382e1091de;p=linux-2.6-omap-h63xx.git

Explain kmem_cache_cpu fields

Add some comments explaining the fields of the kmem_cache_cpu structure.

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

diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index a06ee26193c..ddb1a706b14 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -12,11 +12,11 @@
 #include <linux/kobject.h>
 
 struct kmem_cache_cpu {
-	void **freelist;
-	struct page *page;
-	int node;
-	unsigned int offset;
-	unsigned int objsize;
+	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) */
 };
 
 struct kmem_cache_node {