Commit cea371f4 authored by Vladimir Davydov's avatar Vladimir Davydov Committed by Linus Torvalds

slab: document kmalloc_order

Signed-off-by: default avatarVladimir Davydov <vdavydov@parallels.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 56a3c655
...@@ -582,6 +582,11 @@ void __init create_kmalloc_caches(unsigned long flags) ...@@ -582,6 +582,11 @@ void __init create_kmalloc_caches(unsigned long flags)
} }
#endif /* !CONFIG_SLOB */ #endif /* !CONFIG_SLOB */
/*
* To avoid unnecessary overhead, we pass through large allocation requests
* directly to the page allocator. We use __GFP_COMP, because we will need to
* know the allocation order to free the pages properly in kfree.
*/
void *kmalloc_order(size_t size, gfp_t flags, unsigned int order) void *kmalloc_order(size_t size, gfp_t flags, unsigned int order)
{ {
void *ret; void *ret;
......
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