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slab: remove nodeid in struct slab

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We can get nodeid using address translation, so this field is not useful.
Therefore, remove it.

Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Pekka Enberg <penberg@iki.fi>
This commit is contained in:
Joonsoo Kim 2013-10-24 10:07:40 +09:00 committed by Pekka Enberg
parent ac2b54edbc
commit 1ea991b00c
1 changed files with 4 additions and 7 deletions
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11
mm/slab.c
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@ -222,7 +222,6 @@ struct slab {
void *s_mem; /* including colour offset */
unsigned int inuse; /* num of objs active in slab */
kmem_bufctl_t free;
unsigned short nodeid;
};
struct slab_rcu __slab_cover_slab_rcu;
};
@ -1099,8 +1098,7 @@ static void drain_alien_cache(struct kmem_cache *cachep,
static inline int cache_free_alien(struct kmem_cache *cachep, void *objp)
{
struct slab *slabp = virt_to_slab(objp);
int nodeid = slabp->nodeid;
int nodeid = page_to_nid(virt_to_page(objp));
struct kmem_cache_node *n;
struct array_cache *alien = NULL;
int node;
@ -1111,7 +1109,7 @@ static inline int cache_free_alien(struct kmem_cache *cachep, void *objp)
* Make sure we are not freeing a object from another node to the array
* cache on this cpu.
*/
if (likely(slabp->nodeid == node))
if (likely(nodeid == node))
return 0;
n = cachep->node[node];
@ -2630,7 +2628,6 @@ static struct slab *alloc_slabmgmt(struct kmem_cache *cachep,
}
slabp->inuse = 0;
slabp->s_mem = addr + colour_off;
slabp->nodeid = nodeid;
slabp->free = 0;
return slabp;
}
@ -2707,7 +2704,7 @@ static void *slab_get_obj(struct kmem_cache *cachep, struct slab *slabp,
next = slab_bufctl(slabp)[slabp->free];
#if DEBUG
slab_bufctl(slabp)[slabp->free] = BUFCTL_FREE;
WARN_ON(slabp->nodeid != nodeid);
WARN_ON(page_to_nid(virt_to_page(objp)) != nodeid);
#endif
slabp->free = next;
@ -2721,7 +2718,7 @@ static void slab_put_obj(struct kmem_cache *cachep, struct slab *slabp,
#if DEBUG
/* Verify that the slab belongs to the intended node */
WARN_ON(slabp->nodeid != nodeid);
WARN_ON(page_to_nid(virt_to_page(objp)) != nodeid);
if (slab_bufctl(slabp)[objnr] + 1 <= SLAB_LIMIT + 1) {
printk(KERN_ERR "slab: double free detected in cache "