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>
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ac2b54edbc
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1ea991b00c
11
mm/slab.c
11
mm/slab.c
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@ -222,7 +222,6 @@ struct slab {
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void *s_mem; /* including colour offset */
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unsigned int inuse; /* num of objs active in slab */
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kmem_bufctl_t free;
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unsigned short nodeid;
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};
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struct slab_rcu __slab_cover_slab_rcu;
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};
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@ -1099,8 +1098,7 @@ static void drain_alien_cache(struct kmem_cache *cachep,
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static inline int cache_free_alien(struct kmem_cache *cachep, void *objp)
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{
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struct slab *slabp = virt_to_slab(objp);
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int nodeid = slabp->nodeid;
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int nodeid = page_to_nid(virt_to_page(objp));
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struct kmem_cache_node *n;
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struct array_cache *alien = NULL;
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int node;
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@ -1111,7 +1109,7 @@ static inline int cache_free_alien(struct kmem_cache *cachep, void *objp)
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* Make sure we are not freeing a object from another node to the array
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* cache on this cpu.
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*/
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if (likely(slabp->nodeid == node))
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if (likely(nodeid == node))
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return 0;
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n = cachep->node[node];
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@ -2630,7 +2628,6 @@ static struct slab *alloc_slabmgmt(struct kmem_cache *cachep,
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}
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slabp->inuse = 0;
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slabp->s_mem = addr + colour_off;
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slabp->nodeid = nodeid;
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slabp->free = 0;
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return slabp;
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}
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@ -2707,7 +2704,7 @@ static void *slab_get_obj(struct kmem_cache *cachep, struct slab *slabp,
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next = slab_bufctl(slabp)[slabp->free];
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#if DEBUG
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slab_bufctl(slabp)[slabp->free] = BUFCTL_FREE;
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WARN_ON(slabp->nodeid != nodeid);
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WARN_ON(page_to_nid(virt_to_page(objp)) != nodeid);
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#endif
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slabp->free = next;
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@ -2721,7 +2718,7 @@ static void slab_put_obj(struct kmem_cache *cachep, struct slab *slabp,
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#if DEBUG
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/* Verify that the slab belongs to the intended node */
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WARN_ON(slabp->nodeid != nodeid);
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WARN_ON(page_to_nid(virt_to_page(objp)) != nodeid);
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if (slab_bufctl(slabp)[objnr] + 1 <= SLAB_LIMIT + 1) {
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printk(KERN_ERR "slab: double free detected in cache "
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