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| author | Christoph Lameter <clameter@sgi.com> | 2007-06-23 17:16:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-06-24 08:59:12 -0700 |
| commit | debee0768ea1978c6efba03206a414685e4a9ed1 (patch) | |
| tree | 76b257ca8ea66e596ffb0744fdb51f98dd044bed /include/linux/slab.h | |
| parent | 71c42157904404a37f89fff3b2536c55115823a5 (diff) | |
| download | lwn-debee0768ea1978c6efba03206a414685e4a9ed1.tar.gz lwn-debee0768ea1978c6efba03206a414685e4a9ed1.zip | |
slab allocators: MAX_ORDER one off fix
MAX_ORDER is the first order that is not possible.
Use MAX_ORDER - 1 to calculate the larges possible object size in slab.h
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/slab.h')
| -rw-r--r-- | include/linux/slab.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/slab.h b/include/linux/slab.h index a015236cc572..cebcd3833c76 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -82,8 +82,8 @@ static inline void *kmem_cache_alloc_node(struct kmem_cache *cachep, * to do various tricks to work around compiler limitations in order to * ensure proper constant folding. */ -#define KMALLOC_SHIFT_HIGH ((MAX_ORDER + PAGE_SHIFT) <= 25 ? \ - (MAX_ORDER + PAGE_SHIFT) : 25) +#define KMALLOC_SHIFT_HIGH ((MAX_ORDER + PAGE_SHIFT - 1) <= 25 ? \ + (MAX_ORDER + PAGE_SHIFT - 1) : 25) #define KMALLOC_MAX_SIZE (1UL << KMALLOC_SHIFT_HIGH) #define KMALLOC_MAX_ORDER (KMALLOC_SHIFT_HIGH - PAGE_SHIFT) |