The patch titled
Subject: mm/slab: drain the free slab as much as possible
has been added to the -mm tree. Its filename is
mm-slab-drain-the-free-slab-as-much-as-possible.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-slab-drain-the-free-slab-as-much-as-possible.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-slab-drain-the-free-slab-as-much-as-possible.patch
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From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Subject: mm/slab: drain the free slab as much as possible
slabs_tofree() implies freeing all free slab. We can do it with
just providing INT_MAX.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Acked-by: Christoph Lameter <cl@xxxxxxxxx>
Cc: Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slab.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff -puN mm/slab.c~mm-slab-drain-the-free-slab-as-much-as-possible mm/slab.c
--- a/mm/slab.c~mm-slab-drain-the-free-slab-as-much-as-possible
+++ a/mm/slab.c
@@ -895,12 +895,6 @@ static int init_cache_node_node(int node
return 0;
}
-static inline int slabs_tofree(struct kmem_cache *cachep,
- struct kmem_cache_node *n)
-{
- return (n->free_objects + cachep->num - 1) / cachep->num;
-}
-
static void cpuup_canceled(long cpu)
{
struct kmem_cache *cachep;
@@ -965,7 +959,7 @@ free_slab:
n = get_node(cachep, node);
if (!n)
continue;
- drain_freelist(cachep, n, slabs_tofree(cachep, n));
+ drain_freelist(cachep, n, INT_MAX);
}
}
@@ -1117,7 +1111,7 @@ static int __meminit drain_cache_node_no
if (!n)
continue;
- drain_freelist(cachep, n, slabs_tofree(cachep, n));
+ drain_freelist(cachep, n, INT_MAX);
if (!list_empty(&n->slabs_full) ||
!list_empty(&n->slabs_partial)) {
@@ -2311,7 +2305,7 @@ int __kmem_cache_shrink(struct kmem_cach
check_irq_on();
for_each_kmem_cache_node(cachep, node, n) {
- drain_freelist(cachep, n, slabs_tofree(cachep, n));
+ drain_freelist(cachep, n, INT_MAX);
ret += !list_empty(&n->slabs_full) ||
!list_empty(&n->slabs_partial);
_
Patches currently in -mm which might be from iamjoonsoo.kim@xxxxxxx are
mm-slab-fix-the-theoretical-race-by-holding-proper-lock.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-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
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