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mm, sl[aou]b: Extract common code for kmem_cache_create()

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Kmem_cache_create() does a variety of sanity checks but those
vary depending on the allocator. Use the strictest tests and put them into
a slab_common file. Make the tests conditional on CONFIG_DEBUG_VM.

This patch has the effect of adding sanity checks for SLUB and SLOB
under CONFIG_DEBUG_VM and removes the checks in SLAB for !CONFIG_DEBUG_VM.

Signed-off-by: Christoph Lameter <[email protected]>
Signed-off-by: Pekka Enberg <[email protected]>
This commit is contained in:
Christoph Lameter 2012-07-06 15:25:10 -05:00 • committed by Pekka Enberg
commit 039363f38b
6 changed files with 87 additions and 31 deletions
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8
mm/slob.c
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@ -506,7 +506,7 @@ size_t ksize(const void *block)
}
EXPORT_SYMBOL(ksize);
struct kmem_cache *kmem_cache_create(const char *name, size_t size,
struct kmem_cache *__kmem_cache_create(const char *name, size_t size,
size_t align, unsigned long flags, void (*ctor)(void *))
{
struct kmem_cache *c;
@ -529,13 +529,11 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size,
c->align = ARCH_SLAB_MINALIGN;
if (c->align < align)
c->align = align;
} else if (flags & SLAB_PANIC)
panic("Cannot create slab cache %s\n", name);
kmemleak_alloc(c, sizeof(struct kmem_cache), 1, GFP_KERNEL);
kmemleak_alloc(c, sizeof(struct kmem_cache), 1, GFP_KERNEL);
}
return c;
}
EXPORT_SYMBOL(kmem_cache_create);
void kmem_cache_destroy(struct kmem_cache *c)
{