diff options
| -rw-r--r-- | mm/slab.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/mm/slab.c b/mm/slab.c index bf05ea900ce8..a94cf0fea8a2 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -2499,23 +2499,28 @@ static void slab_put_obj(struct kmem_cache *cachep, struct slab *slabp, slabp->inuse--; } -static void set_slab_attr(struct kmem_cache *cachep, struct slab *slabp, - void *objp) +/* + * Map pages beginning at addr to the given cache and slab. This is required + * for the slab allocator to be able to lookup the cache and slab of a + * virtual address for kfree, ksize, kmem_ptr_validate, and slab debugging. + */ +static void slab_map_pages(struct kmem_cache *cache, struct slab *slab, + void *addr) { - int i; + int nr_pages; struct page *page; - /* Nasty!!!!!! I hope this is OK. */ - page = virt_to_page(objp); + page = virt_to_page(addr); - i = 1; + nr_pages = 1; if (likely(!PageCompound(page))) - i <<= cachep->gfporder; + nr_pages <<= cache->gfporder; + do { - page_set_cache(page, cachep); - page_set_slab(page, slabp); + page_set_cache(page, cache); + page_set_slab(page, slab); page++; - } while (--i); + } while (--nr_pages); } /* @@ -2587,7 +2592,7 @@ static int cache_grow(struct kmem_cache *cachep, gfp_t flags, int nodeid) goto opps1; slabp->nodeid = nodeid; - set_slab_attr(cachep, slabp, objp); + slab_map_pages(cachep, slabp, objp); cache_init_objs(cachep, slabp, ctor_flags); |