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slab: remove one NR_CPUS dependency 

Reduce high order allocations in do_tune_cpucache() for some setups.
(NR_CPUS=4096 -> we need 64KB)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Eric Dumazet 2011-07-25 08:55:42 +02:00 committed by Pekka Enberg
parent 95b6886526
commit acfe7d7448
1 changed files with 3 additions and 2 deletions
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5
mm/slab.c
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@ -3934,7 +3934,7 @@ fail:
struct ccupdate_struct { struct ccupdate_struct {
struct kmem_cache *cachep; struct kmem_cache *cachep;
struct array_cache *new[NR_CPUS]; struct array_cache *new[0];
}; };
static void do_ccupdate_local(void *info) static void do_ccupdate_local(void *info)
@ -3956,7 +3956,8 @@ static int do_tune_cpucache(struct kmem_cache *cachep, int limit,
struct ccupdate_struct *new; struct ccupdate_struct *new;
int i; int i;
new = kzalloc(sizeof(*new), gfp); new = kzalloc(sizeof(*new) + nr_cpu_ids * sizeof(struct array_cache *),
gfp);
if (!new) if (!new)
return -ENOMEM; return -ENOMEM;