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slub: Simplify control flow in __slab_alloc()

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Simplify control flow a bit avoiding nesting.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Christoph Lameter 2012-05-09 10:09:54 -05:00 committed by Pekka Enberg
parent 7ced371971
commit f469743673
1 changed files with 6 additions and 8 deletions
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14
mm/slub.c
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@ -2272,17 +2272,15 @@ static void *__slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
/* Then do expensive stuff like retrieving pages from the partial lists */
freelist = get_partial(s, gfpflags, node, c);
if (unlikely(!freelist)) {
if (!freelist)
freelist = new_slab_objects(s, gfpflags, node, &c);
if (unlikely(!freelist)) {
if (!(gfpflags & __GFP_NOWARN) && printk_ratelimit())
slab_out_of_memory(s, gfpflags, node);
if (unlikely(!freelist)) {
if (!(gfpflags & __GFP_NOWARN) && printk_ratelimit())
slab_out_of_memory(s, gfpflags, node);
local_irq_restore(flags);
return NULL;
}
local_irq_restore(flags);
return NULL;
}
if (likely(!kmem_cache_debug(s)))