The patch titled
Subject: slub: fix kmem_cache_shrink return value
has been added to the -mm tree. Its filename is
slub-fix-kmem_cache_shrink-return-value.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/slub-fix-kmem_cache_shrink-return-value.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/slub-fix-kmem_cache_shrink-return-value.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx>
Subject: slub: fix kmem_cache_shrink return value
It is supposed to return 0 if the cache has no remaining objects and 1
otherwise, while currently it always returns 0. Fix it.
Signed-off-by: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx>
Acked-by: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slub.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff -puN mm/slub.c~slub-fix-kmem_cache_shrink-return-value mm/slub.c
--- a/mm/slub.c~slub-fix-kmem_cache_shrink-return-value
+++ a/mm/slub.c
@@ -3379,6 +3379,7 @@ int __kmem_cache_shrink(struct kmem_cach
LIST_HEAD(discard);
struct list_head promote[SHRINK_PROMOTE_MAX];
unsigned long flags;
+ int ret = 0;
for (i = 0; i < SHRINK_PROMOTE_MAX; i++)
INIT_LIST_HEAD(promote + i);
@@ -3424,9 +3425,12 @@ int __kmem_cache_shrink(struct kmem_cach
/* Release empty slabs */
list_for_each_entry_safe(page, t, &discard, lru)
discard_slab(s, page);
+
+ if (slabs_node(s, node))
+ ret = 1;
}
- return 0;
+ return ret;
}
static int slab_mem_going_offline_callback(void *arg)
_
Patches currently in -mm which might be from vdavydov@xxxxxxxxxxxxx are
origin.patch
memcg-zap-__memcg_chargeuncharge_slab.patch
memcg-zap-memcg_name-argument-of-memcg_create_kmem_cache.patch
memcg-zap-memcg_slab_caches-and-memcg_slab_mutex.patch
swap-remove-unused-mem_cgroup_uncharge_swapcache-declaration.patch
mm-memcontrol-track-move_lock-state-internally.patch
mm-vmscan-wake-up-all-pfmemalloc-throttled-processes-at-once.patch
list_lru-introduce-list_lru_shrink_countwalk.patch
fs-consolidate-nrfree_cached_objects-args-in-shrink_control.patch
vmscan-per-memory-cgroup-slab-shrinkers.patch
memcg-rename-some-cache-id-related-variables.patch
memcg-add-rwsem-to-synchronize-against-memcg_caches-arrays-relocation.patch
list_lru-get-rid-of-active_nodes.patch
list_lru-organize-all-list_lrus-to-list.patch
list_lru-introduce-per-memcg-lists.patch
fs-make-shrinker-memcg-aware.patch
vmscan-force-scan-offline-memory-cgroups.patch
vmscan-force-scan-offline-memory-cgroups-fix.patch
mm-page_counter-pull-1-handling-out-of-page_counter_memparse.patch
mm-memcontrol-default-hierarchy-interface-for-memory.patch
mm-memcontrol-fold-move_anon-and-move_file.patch
mm-memcontrol-fold-move_anon-and-move_file-fix.patch
mm-memcontrol-simplify-soft-limit-tree-init-code.patch
mm-memcontrol-consolidate-memory-controller-initialization.patch
mm-memcontrol-consolidate-swap-controller-code.patch
fs-shrinker-always-scan-at-least-one-object-of-each-type.patch
fs-shrinker-always-scan-at-least-one-object-of-each-type-fix.patch
mm-vmscan-fix-the-page-state-calculation-in-too_many_isolated.patch
mm-vmscan-fix-the-page-state-calculation-in-too_many_isolated-fix.patch
slab-embed-memcg_cache_params-to-kmem_cache.patch
slab-embed-memcg_cache_params-to-kmem_cache-fix.patch
slab-link-memcg-caches-of-the-same-kind-into-a-list.patch
slab-link-memcg-caches-of-the-same-kind-into-a-list-fix.patch
cgroup-release-css-id-after-css_free.patch
slab-use-css-id-for-naming-per-memcg-caches.patch
memcg-free-memcg_caches-slot-on-css-offline.patch
list_lru-add-helpers-to-isolate-items.patch
memcg-reparent-list_lrus-and-free-kmemcg_id-on-css-offline.patch
slub-never-fail-to-shrink-cache.patch
slub-fix-kmem_cache_shrink-return-value.patch
slub-make-dead-caches-discard-free-slabs-immediately.patch
vmstat-do-not-use-deferrable-delayed-work-for-vmstat_update.patch
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