[PATCH -mm 14/14] fs: make shrinker memcg aware
From: Vladimir Davydov <hidden>
Date: 2014-09-21 15:16:17
Also in:
linux-mm, lkml
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
Now, to make any list_lru-based shrinker memcg aware we should only initialize its list_lru as memcg-enabled. Let's do it for the general FS shrinker (super_block::s_shrink) and mark it as memcg aware. There are other FS-specific shrinkers that use list_lru for storing objects, such as XFS and GFS2 dquot cache shrinkers, but since they reclaim objects that are shared among different cgroups, there is no point making them memcg aware. Signed-off-by: Vladimir Davydov <redacted> --- fs/super.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/super.c b/fs/super.c
index a82e97b0b8b9..9c765d3a14f3 100644
--- a/fs/super.c
+++ b/fs/super.c@@ -189,9 +189,9 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags) INIT_HLIST_BL_HEAD(&s->s_anon); INIT_LIST_HEAD(&s->s_inodes); - if (list_lru_init(&s->s_dentry_lru, false)) + if (list_lru_init(&s->s_dentry_lru, true)) goto fail; - if (list_lru_init(&s->s_inode_lru, false)) + if (list_lru_init(&s->s_inode_lru, true)) goto fail; init_rwsem(&s->s_umount);
@@ -227,7 +227,7 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags) s->s_shrink.scan_objects = super_cache_scan; s->s_shrink.count_objects = super_cache_count; s->s_shrink.batch = 1024; - s->s_shrink.flags = SHRINKER_NUMA_AWARE; + s->s_shrink.flags = SHRINKER_NUMA_AWARE | SHRINKER_MEMCG_AWARE; return s; fail:
--
1.7.10.4
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