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authorChristoph Hellwig <hch@lst.de>2006-06-23 02:03:17 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:42:48 -0700
commite1b6aa6f1404f162697650df2cdb6c374b1d6a5b (patch)
tree5d7f93f6d9a315b66fbc2bcfb7cc5d866a7013e9
parenta43a8c39bbb493c9e93f6764b350de2e33e18e92 (diff)
downloadlinux-linaro-e1b6aa6f1404f162697650df2cdb6c374b1d6a5b.tar.gz
[PATCH] slab: clean up kmem_getpages
The last ifdef addition hit the ugliness treshold on this functions, so: - rename the variable i to nr_pages so it's somewhat descriptive - remove the addr variable and do the page_address call at the very end - instead of ifdef'ing the whole alloc_pages_node call just make the __GFP_COMP addition to flags conditional - rewrite the __GFP_COMP comment to make sense Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--mm/slab.c30
1 files changed, 14 insertions, 16 deletions
diff --git a/mm/slab.c b/mm/slab.c
index a94cf0fea8a..7bd19639efd 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1489,31 +1489,29 @@ __initcall(cpucache_init);
static void *kmem_getpages(struct kmem_cache *cachep, gfp_t flags, int nodeid)
{
struct page *page;
- void *addr;
+ int nr_pages;
int i;
- flags |= cachep->gfpflags;
#ifndef CONFIG_MMU
- /* nommu uses slab's for process anonymous memory allocations, so
- * requires __GFP_COMP to properly refcount higher order allocations"
+ /*
+ * Nommu uses slab's for process anonymous memory allocations, and thus
+ * requires __GFP_COMP to properly refcount higher order allocations
*/
- page = alloc_pages_node(nodeid, (flags | __GFP_COMP), cachep->gfporder);
-#else
- page = alloc_pages_node(nodeid, flags, cachep->gfporder);
+ flags |= __GFP_COMP;
#endif
+ flags |= cachep->gfpflags;
+
+ page = alloc_pages_node(nodeid, flags, cachep->gfporder);
if (!page)
return NULL;
- addr = page_address(page);
- i = (1 << cachep->gfporder);
+ nr_pages = (1 << cachep->gfporder);
if (cachep->flags & SLAB_RECLAIM_ACCOUNT)
- atomic_add(i, &slab_reclaim_pages);
- add_page_state(nr_slab, i);
- while (i--) {
- __SetPageSlab(page);
- page++;
- }
- return addr;
+ atomic_add(nr_pages, &slab_reclaim_pages);
+ add_page_state(nr_slab, nr_pages);
+ for (i = 0; i < nr_pages; i++)
+ __SetPageSlab(page + i);
+ return page_address(page);
}
/*