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-rw-r--r--mm/slub.c15
1 files changed, 4 insertions, 11 deletions
diff --git a/mm/slub.c b/mm/slub.c
index 1832ae1ea53..5d425d7116e 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2199,9 +2199,8 @@ EXPORT_SYMBOL(kmem_cache_shrink);
*/
void *krealloc(const void *p, size_t new_size, gfp_t flags)
{
- struct kmem_cache *new_cache;
void *ret;
- struct page *page;
+ size_t ks;
if (unlikely(!p))
return kmalloc(new_size, flags);
@@ -2211,19 +2210,13 @@ void *krealloc(const void *p, size_t new_size, gfp_t flags)
return NULL;
}
- page = virt_to_head_page(p);
-
- new_cache = get_slab(new_size, flags);
-
- /*
- * If new size fits in the current cache, bail out.
- */
- if (likely(page->slab == new_cache))
+ ks = ksize(p);
+ if (ks >= new_size)
return (void *)p;
ret = kmalloc(new_size, flags);
if (ret) {
- memcpy(ret, p, min(new_size, ksize(p)));
+ memcpy(ret, p, min(new_size, ks));
kfree(p);
}
return ret;