diff options
| author | Christoph Lameter <clameter@sgi.com> | 2008-02-15 23:45:25 -0800 |
|---|---|---|
| committer | Christoph Lameter <clameter@sgi.com> | 2008-03-03 12:22:31 -0800 |
| commit | ae20bfda6813387af18c7fdbc0f8b1fa7be2d05b (patch) | |
| tree | 4455ba4cdd5a7bd1d3da13915965f1aed2dd84b0 /mm | |
| parent | 27d9e4e94862c89d171cf70911b4f11ad69fb54e (diff) | |
| download | linux-ae20bfda6813387af18c7fdbc0f8b1fa7be2d05b.tar.bz2 | |
slub: Remove BUG_ON() from ksize and omit checks for !SLUB_DEBUG
The BUG_ONs are useless since the pointer derefs will lead to
NULL deref errors anyways. Some of the checks are not necessary
if no debugging is possible.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/slub.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/mm/slub.c b/mm/slub.c index b49570ca08b5..09b5dc82df58 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -2610,19 +2610,17 @@ size_t ksize(const void *object) struct page *page; struct kmem_cache *s; - BUG_ON(!object); if (unlikely(object == ZERO_SIZE_PTR)) return 0; page = virt_to_head_page(object); - BUG_ON(!page); if (unlikely(!PageSlab(page))) return PAGE_SIZE << compound_order(page); s = page->slab; - BUG_ON(!s); +#ifdef CONFIG_SLUB_DEBUG /* * Debugging requires use of the padding between object * and whatever may come after it. @@ -2630,6 +2628,7 @@ size_t ksize(const void *object) if (s->flags & (SLAB_RED_ZONE | SLAB_POISON)) return s->objsize; +#endif /* * If we have the need to store the freelist pointer * back there or track user information then we can @@ -2637,7 +2636,6 @@ size_t ksize(const void *object) */ if (s->flags & (SLAB_DESTROY_BY_RCU | SLAB_STORE_USER)) return s->inuse; - /* * Else we can use all the padding etc for the allocation */ |