The patch titled
Subject: mm/slab: factor out slab list fixup code
has been added to the -mm tree. Its filename is
mm-slab-factor-out-slab-list-fixup-code.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-slab-factor-out-slab-list-fixup-code.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-slab-factor-out-slab-list-fixup-code.patch
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------------------------------------------------------
From: Joonsoo Kim <js1304@xxxxxxxxx>
Subject: mm/slab: factor out slab list fixup code
Slab list should be fixed up after object is detached from the slab and
this happens at two places. They do exactly same thing. They will be
changed in the following patch, so, to reduce code duplication, this patch
factor out them and make it common function.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slab.c | 25 +++++++++++++------------
1 file changed, 13 insertions(+), 12 deletions(-)
diff -puN mm/slab.c~mm-slab-factor-out-slab-list-fixup-code mm/slab.c
--- a/mm/slab.c~mm-slab-factor-out-slab-list-fixup-code
+++ a/mm/slab.c
@@ -2724,6 +2724,17 @@ static void *cache_free_debugcheck(struc
#define cache_free_debugcheck(x,objp,z) (objp)
#endif
+static inline void fixup_slab_list(struct kmem_cache *cachep,
+ struct kmem_cache_node *n, struct page *page)
+{
+ /* move slabp to correct slabp list: */
+ list_del(&page->lru);
+ if (page->active == cachep->num)
+ list_add(&page->lru, &n->slabs_full);
+ else
+ list_add(&page->lru, &n->slabs_partial);
+}
+
static struct page *get_first_slab(struct kmem_cache_node *n)
{
struct page *page;
@@ -2797,12 +2808,7 @@ retry:
ac_put_obj(cachep, ac, slab_get_obj(cachep, page));
}
- /* move slabp to correct slabp list: */
- list_del(&page->lru);
- if (page->active == cachep->num)
- list_add(&page->lru, &n->slabs_full);
- else
- list_add(&page->lru, &n->slabs_partial);
+ fixup_slab_list(cachep, n, page);
}
must_grow:
@@ -3068,13 +3074,8 @@ retry:
obj = slab_get_obj(cachep, page);
n->free_objects--;
- /* move slabp to correct slabp list: */
- list_del(&page->lru);
- if (page->active == cachep->num)
- list_add(&page->lru, &n->slabs_full);
- else
- list_add(&page->lru, &n->slabs_partial);
+ fixup_slab_list(cachep, n, page);
spin_unlock(&n->list_lock);
goto done;
_
Patches currently in -mm which might be from js1304@xxxxxxxxx are
mm-slab-fix-stale-code-comment.patch
mm-slab-remove-useless-structure-define.patch
mm-slab-remove-the-checks-for-slab-implementation-bug.patch
mm-slab-activate-debug_pagealloc-in-slab-when-it-is-actually-enabled.patch
mm-slab-use-more-appropriate-condition-check-for-debug_pagealloc.patch
mm-slab-clean-up-debug_pagealloc-processing-code.patch
mm-slab-alternative-implementation-for-debug_slab_leak.patch
mm-slab-remove-object-status-buffer-for-debug_slab_leak.patch
mm-slab-put-the-freelist-at-the-end-of-slab-page.patch
mm-slab-align-cache-size-first-before-determination-of-off_slab-candidate.patch
mm-slab-clean-up-cache-type-determination.patch
mm-slab-do-not-change-cache-size-if-debug-pagealloc-isnt-possible.patch
mm-slab-make-criteria-for-off-slab-determination-robust-and-simple.patch
mm-slab-factor-out-slab-list-fixup-code.patch
mm-slab-factor-out-debugging-initialization-in-cache_init_objs.patch
mm-slab-introduce-new-slab-management-type-objfreelist_slab.patch
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