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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>
authored by Christoph Lameter and committed by Linus Torvalds debee076 71c42157
+2
-2
include/linux/slab.h
+2
-2
include/linux/slab.h
···
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* to do various tricks to work around compiler limitations in order to
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* ensure proper constant folding.
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*/
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-
#define KMALLOC_SHIFT_HIGH ((MAX_ORDER + PAGE_SHIFT) <= 25 ? \
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-
(MAX_ORDER + PAGE_SHIFT) : 25)
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#define KMALLOC_MAX_SIZE (1UL << KMALLOC_SHIFT_HIGH)
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#define KMALLOC_MAX_ORDER (KMALLOC_SHIFT_HIGH - PAGE_SHIFT)
···
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* to do various tricks to work around compiler limitations in order to
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* ensure proper constant folding.
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*/
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+
#define KMALLOC_SHIFT_HIGH ((MAX_ORDER + PAGE_SHIFT - 1) <= 25 ? \
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+
(MAX_ORDER + PAGE_SHIFT - 1) : 25)
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#define KMALLOC_MAX_SIZE (1UL << KMALLOC_SHIFT_HIGH)
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#define KMALLOC_MAX_ORDER (KMALLOC_SHIFT_HIGH - PAGE_SHIFT)