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authorChristoph Lameter <clameter@sgi.com>2007-10-16 01:26:06 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:01 -0700
commit8e65d24c7caf2a4c69b3ae0ce170bf3082ba359f (patch)
tree4f690448c1363bf02f74abd9293126c3e3a9e4c9 /mm
parentdfb4f09609827301740ef0a11b37530d190f1681 (diff)
downloadop-kernel-dev-8e65d24c7caf2a4c69b3ae0ce170bf3082ba359f.zip
op-kernel-dev-8e65d24c7caf2a4c69b3ae0ce170bf3082ba359f.tar.gz
SLUB: Do not use page->mapping
After moving the lockless_freelist to kmem_cache_cpu we no longer need page->lockless_freelist. Restructure the use of the struct page fields in such a way that we never touch the mapping field. This is turn allows us to remove the special casing of SLUB when determining the mapping of a page (needed for corner cases of virtual caches machines that need to flush caches of processors mapping a page). 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>
Diffstat (limited to 'mm')
-rw-r--r--mm/slub.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/mm/slub.c b/mm/slub.c
index 4b8037f..aa8bb07 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1127,7 +1127,6 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node)
set_freepointer(s, last, NULL);
page->freelist = start;
- page->lockless_freelist = NULL;
page->inuse = 0;
out:
if (flags & __GFP_WAIT)
@@ -1153,7 +1152,6 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,
- pages);
- page->mapping = NULL;
__free_pages(page, s->order);
}
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