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| author | Joonsoo Kim <iamjoonsoo.kim@lge.com> | 2013-10-24 10:07:40 +0900 |
|---|---|---|
| committer | Pekka Enberg <penberg@iki.fi> | 2013-10-24 20:17:27 +0300 |
| commit | 1ea991b00c26e3a275e2d2e110e5221211fc45b6 (patch) | |
| tree | 9465add4bdd50decc33e6d3b05f6eb52d29e719b /mm/slab.c | |
| parent | ac2b54edbc4768f4a069fc360e2b4e579e9907cb (diff) | |
| download | linux-1ea991b00c26e3a275e2d2e110e5221211fc45b6.tar.gz linux-1ea991b00c26e3a275e2d2e110e5221211fc45b6.tar.bz2 linux-1ea991b00c26e3a275e2d2e110e5221211fc45b6.zip | |
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/slab.c')
| -rw-r--r-- | mm/slab.c | 11 |
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 " |