linux-kernel - [PATCH v13 12/16] fs: mark list_lru based shrinkers memcg aware

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Date:	Mon, 9 Dec 2013 12:05:53 +0400
From:	Vladimir Davydov <vdavydov@...allels.com>
To:	<dchinner@...hat.com>, <hannes@...xchg.org>, <mhocko@...e.cz>,
	<akpm@...ux-foundation.org>
CC:	<linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
	<cgroups@...r.kernel.org>, <devel@...nvz.org>,
	<glommer@...nvz.org>, <glommer@...il.com>,
	<vdavydov@...allels.com>, Al Viro <viro@...iv.linux.org.uk>
Subject: [PATCH v13 12/16] fs: mark list_lru based shrinkers memcg aware

Since now list_lru automatically distributes objects among per-memcg
lists and list_lru_{count,walk} employ information passed in the
shrink_control argument to scan appropriate list, all shrinkers that
keep objects in the list_lru structure can already work as memcg-aware.
Let us mark them so.

Signed-off-by: Vladimir Davydov <vdavydov@...allels.com>
Cc: Glauber Costa <glommer@...nvz.org>
Cc: Dave Chinner <dchinner@...hat.com>
Cc: Al Viro <viro@...iv.linux.org.uk>
---
 fs/gfs2/quota.c  |    2 +-
 fs/super.c       |    2 +-
 fs/xfs/xfs_buf.c |    2 +-
 fs/xfs/xfs_qm.c  |    2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index f0435da..6cf6114 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -150,7 +150,7 @@ struct shrinker gfs2_qd_shrinker = {
 	.count_objects = gfs2_qd_shrink_count,
 	.scan_objects = gfs2_qd_shrink_scan,
 	.seeks = DEFAULT_SEEKS,
-	.flags = SHRINKER_NUMA_AWARE,
+	.flags = SHRINKER_NUMA_AWARE | SHRINKER_MEMCG_AWARE,
 };
 
 
diff --git a/fs/super.c b/fs/super.c
index 8f9a81b..05bead8 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -219,7 +219,7 @@ 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:
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 5b2a49c..d8326b6 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1679,7 +1679,7 @@ xfs_alloc_buftarg(
 	btp->bt_shrinker.count_objects = xfs_buftarg_shrink_count;
 	btp->bt_shrinker.scan_objects = xfs_buftarg_shrink_scan;
 	btp->bt_shrinker.seeks = DEFAULT_SEEKS;
-	btp->bt_shrinker.flags = SHRINKER_NUMA_AWARE;
+	btp->bt_shrinker.flags = SHRINKER_NUMA_AWARE | SHRINKER_MEMCG_AWARE;
 	register_shrinker(&btp->bt_shrinker);
 	return btp;
 
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index aaacf8f..1f9bbb5 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -903,7 +903,7 @@ xfs_qm_init_quotainfo(
 	qinf->qi_shrinker.count_objects = xfs_qm_shrink_count;
 	qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan;
 	qinf->qi_shrinker.seeks = DEFAULT_SEEKS;
-	qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE;
+	qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE | SHRINKER_MEMCG_AWARE;
 	register_shrinker(&qinf->qi_shrinker);
 	return 0;
 }
-- 
1.7.10.4

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