+ mm-slab-clean-up-kmem_cache_node-setup-fix.patch added to -mm tree

+ mm-slab-clean-up-kmem_cache_node-setup-fix.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/slab: clean-up kmem_cache_node setup-fix
has been added to the -mm tree.  Its filename is
     mm-slab-clean-up-kmem_cache_node-setup-fix.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-slab-clean-up-kmem_cache_node-setup-fix.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-slab-clean-up-kmem_cache_node-setup-fix.patch

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------------------------------------------------------
From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: mm/slab: clean-up kmem_cache_node setup-fix

After calling free_block(), we need to re-calculate array_cache's
avail counter. Fix it.

And, it's better to free objects in shared array when it is
really necessary. Check it before calling free_block().

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Reported-by: Nishanth Menon <nm@ti.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Reported-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/slab.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff -puN mm/slab.c~mm-slab-clean-up-kmem_cache_node-setup-fix mm/slab.c
--- a/mm/slab.c~mm-slab-clean-up-kmem_cache_node-setup-fix
+++ a/mm/slab.c
@@ -934,9 +934,10 @@ static int setup_kmem_cache_node(struct
 
 	n = get_node(cachep, node);
 	spin_lock_irq(&n->list_lock);
-	if (n->shared) {
+	if (n->shared && force_change) {
 		free_block(cachep, n->shared->entry,
 				n->shared->avail, node, &list);
+		n->shared->avail = 0;
 	}
 
 	if (!n->shared || force_change) {
_

Patches currently in -mm which might be from iamjoonsoo.kim@lge.com are

mm-slab-hold-a-slab_mutex-when-calling-__kmem_cache_shrink.patch
mm-slab-remove-bad_alien_magic-again.patch
mm-slab-drain-the-free-slab-as-much-as-possible.patch
mm-slab-factor-out-kmem_cache_node-initialization-code.patch
mm-slab-clean-up-kmem_cache_node-setup.patch
mm-slab-clean-up-kmem_cache_node-setup-fix.patch
mm-slab-dont-keep-free-slabs-if-free_objects-exceeds-free_limit.patch
mm-slab-racy-access-modify-the-slab-color.patch
mm-slab-make-cache_grow-handle-the-page-allocated-on-arbitrary-node.patch
mm-slab-separate-cache_grow-to-two-parts.patch
mm-slab-refill-cpu-cache-through-a-new-slab-without-holding-a-node-lock.patch
mm-slab-lockless-decision-to-grow-cache.patch
mm-page_ref-use-page_ref-helper-instead-of-direct-modification-of-_count.patch
mm-rename-_count-field-of-the-struct-page-to-_refcount.patch
mm-rename-_count-field-of-the-struct-page-to-_refcount-fix-fix-fix.patch
mm-hugetlb-add-same-zone-check-in-pfn_range_valid_gigantic.patch
mm-memory_hotplug-add-comment-to-some-functions-related-to-memory-hotplug.patch
mm-vmstat-add-zone-range-overlapping-check.patch
mm-page_owner-add-zone-range-overlapping-check.patch
power-add-zone-range-overlapping-check.patch
mm-writeback-correct-dirty-page-calculation-for-highmem.patch
mm-page_alloc-correct-highmem-memory-statistics.patch
mm-highmem-make-nr_free_highpages-handles-all-highmem-zones-by-itself.patch
mm-vmstat-make-node_page_state-handles-all-zones-by-itself.patch