diff options
| author | Roman Gushchin <guro@fb.com> | 2020-08-06 23:20:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-07 11:33:24 -0700 |
| commit | 964d4bd370d559d9bd8e4abc139e85d2753956fb (patch) | |
| tree | b7bf28d5cd4f81730d9fa53ec60e017feb3089aa /include | |
| parent | 286e04b8ed7a04279ae277f0f024430246ea5eec (diff) | |
| download | linux-964d4bd370d559d9bd8e4abc139e85d2753956fb.tar.bz2 | |
mm: memcg/slab: save obj_cgroup for non-root slab objects
Store the obj_cgroup pointer in the corresponding place of
page->obj_cgroups for each allocated non-root slab object. Make sure that
each allocated object holds a reference to obj_cgroup.
Objcg pointer is obtained from the memcg->objcg dereferencing in
memcg_kmem_get_cache() and passed from pre_alloc_hook to post_alloc_hook.
Then in case of successful allocation(s) it's getting stored in the
page->obj_cgroups vector.
The objcg obtaining part look a bit bulky now, but it will be simplified
by next commits in the series.
Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/20200623174037.3951353-9-guro@fb.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/memcontrol.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index f2f9d5d6b7d1..b845e908e76e 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -1404,7 +1404,8 @@ static inline void memcg_set_shrinker_bit(struct mem_cgroup *memcg, } #endif -struct kmem_cache *memcg_kmem_get_cache(struct kmem_cache *cachep); +struct kmem_cache *memcg_kmem_get_cache(struct kmem_cache *cachep, + struct obj_cgroup **objcgp); void memcg_kmem_put_cache(struct kmem_cache *cachep); #ifdef CONFIG_MEMCG_KMEM |