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| author | Mel Gorman <mel@csn.ul.ie> | 2009-06-16 15:31:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-16 19:47:32 -0700 |
| commit | b3c466ce512923298ae8c0121d3e9f397a3f1210 (patch) | |
| tree | ca6f360a6dbaaa0a71b9375fb57d544364532254 /include/linux | |
| parent | d239171e4f6efd58d7e423853056b1b6a74f1446 (diff) | |
| download | op-kernel-dev-b3c466ce512923298ae8c0121d3e9f397a3f1210.zip op-kernel-dev-b3c466ce512923298ae8c0121d3e9f397a3f1210.tar.gz | |
page allocator: do not sanity check order in the fast path
No user of the allocator API should be passing in an order >= MAX_ORDER
but we check for it on each and every allocation. Delete this check and
make it a VM_BUG_ON check further down the call path.
[akpm@linux-foundation.org: s/VM_BUG_ON/WARN_ON_ONCE/]
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/gfp.h | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 549ec55..c2d3fe0 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -185,9 +185,6 @@ __alloc_pages(gfp_t gfp_mask, unsigned int order, static inline struct page *alloc_pages_node(int nid, gfp_t gfp_mask, unsigned int order) { - if (unlikely(order >= MAX_ORDER)) - return NULL; - /* Unknown node is current node */ if (nid < 0) nid = numa_node_id(); @@ -201,9 +198,6 @@ extern struct page *alloc_pages_current(gfp_t gfp_mask, unsigned order); static inline struct page * alloc_pages(gfp_t gfp_mask, unsigned int order) { - if (unlikely(order >= MAX_ORDER)) - return NULL; - return alloc_pages_current(gfp_mask, order); } extern struct page *alloc_page_vma(gfp_t gfp_mask, |
