The patch titled
Subject: slab: suppress warnings caused by expansion of for_each_memcg_cache if !MEMCG_KMEM
has been added to the -mm tree. Its filename is
slab-link-memcg-caches-of-the-same-kind-into-a-list-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/slab-link-memcg-caches-of-the-same-kind-into-a-list-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/slab-link-memcg-caches-of-the-same-kind-into-a-list-fix.patch
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------------------------------------------------------
From: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx>
Subject: slab: suppress warnings caused by expansion of for_each_memcg_cache if !MEMCG_KMEM
In file included from mm/slab_common.c:26:0:
mm/slab_common.c: In function 'kmem_cache_destroy':
>> mm/slab.h:259:30: warning: right-hand operand of comma expression has no effect [-Wunused-value]
for (iter = NULL, tmp = NULL, (root); 0; )
^
>> mm/slab_common.c:603:2: note: in expansion of macro 'for_each_memcg_cache_safe'
for_each_memcg_cache_safe(c, c2, s) {
^
fixes: slab-link-memcg-caches-of-the-same-kind-into-a-list
Signed-off-by: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slab.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN mm/slab.h~slab-link-memcg-caches-of-the-same-kind-into-a-list-fix mm/slab.h
--- a/mm/slab.h~slab-link-memcg-caches-of-the-same-kind-into-a-list-fix
+++ a/mm/slab.h
@@ -254,9 +254,9 @@ extern void slab_init_memcg_params(struc
#else /* !CONFIG_MEMCG_KMEM */
#define for_each_memcg_cache(iter, root) \
- for (iter = NULL, (root); 0; )
+ for ((void)(iter), (void)(root); 0; )
#define for_each_memcg_cache_safe(iter, tmp, root) \
- for (iter = NULL, tmp = NULL, (root); 0; )
+ for ((void)(iter), (void)(tmp), (void)(root); 0; )
static inline bool is_root_cache(struct kmem_cache *s)
{
_
Patches currently in -mm which might be from vdavydov@xxxxxxxxxxxxx are
mm-vmscan-fix-highidx-argument-type.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
vmstat-do-not-use-deferrable-delayed-work-for-vmstat_update.patch
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