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slub: Switch per cpu partial page support off for debugging 

Eric saw an issue with accounting of slabs during validation. Its not
possible to determine accurately how many per cpu partial slabs exist at
any time so this switches off per cpu partial pages during debug.

Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Christoph Lameter 2011-11-23 09:24:27 -06:00 committed by Pekka Enberg
parent dc47ce90c3
commit 8f1e33daed
1 changed files with 3 additions and 1 deletions
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mm/slub.c
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@ -3028,7 +3028,9 @@ static int kmem_cache_open(struct kmem_cache *s,
* per node list when we run out of per cpu objects. We only fetch 50%
* to keep some capacity around for frees.
*/
if (s->size >= PAGE_SIZE)
if (kmem_cache_debug(s))
s->cpu_partial = 0;
else if (s->size >= PAGE_SIZE)
s->cpu_partial = 2;
else if (s->size >= 1024)
s->cpu_partial = 6;