linux-kernel - [PATCH] slab: avoid double initialization & do it in 1 function

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Date:	Thu, 27 Dec 2007 21:28:52 +0100
From:	Marcin Slusarz <marcin.slusarz@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Christoph Lameter <clameter@....com>,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: [PATCH] slab: avoid double initialization & do it in 1 function

* alloc_slabmgmt: initialize all slab fields in 1 function
* slab->nodeid was initialized twice: in alloc_slabmgmt
  and immediately after it in cache_grow

Signed-off-by: Marcin Slusarz <marcin.slusarz@...il.com>
CC: Christoph Lameter <clameter@....com>
CC: Pekka Enberg <penberg@...helsinki.fi>
diff --git a/mm/slab.c b/mm/slab.c
index 2e338a5..458b07a 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -2626,6 +2626,7 @@ static struct slab *alloc_slabmgmt(struct kmem_cache *cachep, void *objp,
 	slabp->colouroff = colour_off;
 	slabp->s_mem = objp + colour_off;
 	slabp->nodeid = nodeid;
+	slabp->free = 0;
 	return slabp;
 }
 
@@ -2679,7 +2680,6 @@ static void cache_init_objs(struct kmem_cache *cachep,
 		slab_bufctl(slabp)[i] = i + 1;
 	}
 	slab_bufctl(slabp)[i - 1] = BUFCTL_END;
-	slabp->free = 0;
 }
 
 static void kmem_flagcheck(struct kmem_cache *cachep, gfp_t flags)
@@ -2812,7 +2812,6 @@ static int cache_grow(struct kmem_cache *cachep,
 	if (!slabp)
 		goto opps1;
 
-	slabp->nodeid = nodeid;
 	slab_map_pages(cachep, slabp, objp);
 
 	cache_init_objs(cachep, slabp);
--
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