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| author | David Rientjes <rientjes@google.com> | 2009-04-23 09:58:22 +0300 |
|---|---|---|
| committer | Pekka Enberg <penberg@cs.helsinki.fi> | 2009-04-23 09:58:22 +0300 |
| commit | 818cf5909701806285d977f7a9365c5cadb062a7 (patch) | |
| tree | f3a4d1f11d6ef32738f761d258e502b8791b199e /mm | |
| parent | f4efdd65b754ebbf41484d3a2255c59282720650 (diff) | |
| download | lwn-818cf5909701806285d977f7a9365c5cadb062a7.tar.gz lwn-818cf5909701806285d977f7a9365c5cadb062a7.zip | |
slub: enforce MAX_ORDER
slub_max_order may not be equal to or greater than MAX_ORDER.
Additionally, if a single object cannot be placed in a slab of
slub_max_order, it still must allocate slabs below MAX_ORDER.
Acked-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/slub.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/slub.c b/mm/slub.c index 7ab54ecbd3f3..0e1247ed2a06 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1909,7 +1909,7 @@ static inline int calculate_order(int size) * Doh this slab cannot be placed using slub_max_order. */ order = slab_order(size, 1, MAX_ORDER, 1); - if (order <= MAX_ORDER) + if (order < MAX_ORDER) return order; return -ENOSYS; } @@ -2522,6 +2522,7 @@ __setup("slub_min_order=", setup_slub_min_order); static int __init setup_slub_max_order(char *str) { get_option(&str, &slub_max_order); + slub_max_order = min(slub_max_order, MAX_ORDER - 1); return 1; } |