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| author | Tejun Heo <tj@kernel.org> | 2017-02-22 15:41:27 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-22 16:41:27 -0800 |
| commit | c9fc586403e7c85eee06b2d5dea14ce71c00fcd8 (patch) | |
| tree | 4edb0cd2ebf8b0439239fb1ebe511e3def80e39a /mm/slab.c | |
| parent | 510ded33e075c2bd662b1efab0110f4240325fc9 (diff) | |
| download | linux-c9fc586403e7c85eee06b2d5dea14ce71c00fcd8.tar.gz | |
slab: introduce __kmemcg_cache_deactivate()
__kmem_cache_shrink() is called with %true @deactivate only for memcg caches. Remove @deactivate from __kmem_cache_shrink() and introduce __kmemcg_cache_deactivate() instead. Each memcg-supporting allocator should implement it and it should deactivate and drain the cache. This is to allow memcg cache deactivation behavior to further deviate from simple shrinking without messing up __kmem_cache_shrink(). This is pure reorganization and doesn't introduce any observable behavior changes. v2: Dropped unnecessary ifdef in mm/slab.h as suggested by Vladimir. Link: http://lkml.kernel.org/r/20170117235411.9408-8-tj@kernel.org Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slab.c')
| -rw-r--r-- | mm/slab.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/mm/slab.c b/mm/slab.c index 8a0e3392f181..bd63450a9b16 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -2315,7 +2315,7 @@ out: return nr_freed; } -int __kmem_cache_shrink(struct kmem_cache *cachep, bool deactivate) +int __kmem_cache_shrink(struct kmem_cache *cachep) { int ret = 0; int node; @@ -2333,9 +2333,16 @@ int __kmem_cache_shrink(struct kmem_cache *cachep, bool deactivate) return (ret ? 1 : 0); } +#ifdef CONFIG_MEMCG +void __kmemcg_cache_deactivate(struct kmem_cache *cachep) +{ + __kmem_cache_shrink(cachep); +} +#endif + int __kmem_cache_shutdown(struct kmem_cache *cachep) { - return __kmem_cache_shrink(cachep, false); + return __kmem_cache_shrink(cachep); } void __kmem_cache_release(struct kmem_cache *cachep) |