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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2013-10-24 10:07:40 +0900
committerPekka Enberg <penberg@iki.fi>2013-10-24 20:17:27 +0300
commit1ea991b00c26e3a275e2d2e110e5221211fc45b6 (patch)
tree9465add4bdd50decc33e6d3b05f6eb52d29e719b /mm
parentac2b54edbc4768f4a069fc360e2b4e579e9907cb (diff)
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slab: remove nodeid in struct slab
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>
Diffstat (limited to 'mm')
-rw-r--r--mm/slab.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/mm/slab.c b/mm/slab.c
index 34eb1152aba4..71ba8f53f9b7 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -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 "