Messages in this thread Patch in this message | | | Date | Fri, 22 Feb 2008 21:59:05 +0200 | From | Adrian Bunk <> | Subject | [2.6 patch] mm/slub.c: remove unneeded NULL check |
| |
On Wed, Feb 20, 2008 at 03:52:44PM +0200, Pekka Enberg wrote: > > Hi Adrian, > > On 2/20/2008, "Adrian Bunk" <bunk@kernel.org> wrote: > > The Coverity checker spotted the following inconsequent NULL checking > > introduced by commit 8ff12cfc009a2a38d87fa7058226fe197bb2696f: > > > > <-- snip --> > > > > ... > > static inline int is_end(void *addr) > > { > > return (unsigned long)addr & PAGE_MAPPING_ANON; > > } > > ... > > static void deactivate_slab(struct kmem_cache *s, struct kmem_cache_cpu *c) > > { > > ... > > if (c->freelist) <---------------------------------------- > > stat(c, DEACTIVATE_REMOTE_FREES); > > I spotted this too.
I missed that.
> c->freelist should never be NULL so why not send a > patch to Christoph?
Patch below.
cu Adrian
<-- snip -->
There's no reason for checking c->freelist for being NULL here (and we'd anyway Oops below if it was).
Signed-off-by: Adrian Bunk <bunk@kernel.org>
--- dae2a3c60f258f3ad2522b85d79b735a89d702f0 diff --git a/mm/slub.c b/mm/slub.c index 74c65af..072e0a6 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1404,8 +1404,7 @@ static void deactivate_slab(struct kmem_cache *s, struct kmem_cache_cpu *c) struct page *page = c->page; int tail = 1; - if (c->freelist) - stat(c, DEACTIVATE_REMOTE_FREES); + stat(c, DEACTIVATE_REMOTE_FREES); /* * Merge cpu freelist into freelist. Typically we get here * because both freelists are empty. So this is unlikely
| |