diff options
| author | Vladimir Davydov <vdavydov@parallels.com> | 2015-02-12 14:58:51 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-12 18:54:08 -0800 |
| commit | 4101b624352fddb5ed72e7a1b6f8be8cffaa20fa (patch) | |
| tree | 0823d26ef8ad4eaab98a6dce8280c78139aafec7 | |
| parent | 503c358cf1925853195ee39ec437e51138bbb7df (diff) | |
fs: consolidate {nr,free}_cached_objects args in shrink_control
We are going to make FS shrinkers memcg-aware. To achieve that, we will
have to pass the memcg to scan to the nr_cached_objects and
free_cached_objects VFS methods, which currently take only the NUMA node
to scan. Since the shrink_control structure already holds the node, and
the memcg to scan will be added to it when we introduce memcg-aware
vmscan, let us consolidate the methods' arguments in this structure to
keep things clean.
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Suggested-by: Dave Chinner <david@fromorbit.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Greg Thelen <gthelen@google.com>
Cc: Glauber Costa <glommer@gmail.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
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>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/super.c | 12 | ||||
| -rw-r--r-- | fs/xfs/xfs_super.c | 7 | ||||
| -rw-r--r-- | include/linux/fs.h | 6 |
3 files changed, 13 insertions, 12 deletions
diff --git a/fs/super.c b/fs/super.c index 4554ac257647..a2b735a42e74 100644 --- a/fs/super.c +++ b/fs/super.c @@ -75,7 +75,7 @@ static unsigned long super_cache_scan(struct shrinker *shrink, return SHRINK_STOP; if (sb->s_op->nr_cached_objects) - fs_objects = sb->s_op->nr_cached_objects(sb, sc->nid); + fs_objects = sb->s_op->nr_cached_objects(sb, sc); inodes = list_lru_shrink_count(&sb->s_inode_lru, sc); dentries = list_lru_shrink_count(&sb->s_dentry_lru, sc); @@ -97,9 +97,10 @@ static unsigned long super_cache_scan(struct shrinker *shrink, sc->nr_to_scan = inodes; freed += prune_icache_sb(sb, sc); - if (fs_objects) - freed += sb->s_op->free_cached_objects(sb, fs_objects, - sc->nid); + if (fs_objects) { + sc->nr_to_scan = fs_objects; + freed += sb->s_op->free_cached_objects(sb, sc); + } drop_super(sb); return freed; @@ -122,8 +123,7 @@ static unsigned long super_cache_count(struct shrinker *shrink, * s_op->nr_cached_objects(). */ if (sb->s_op && sb->s_op->nr_cached_objects) - total_objects = sb->s_op->nr_cached_objects(sb, - sc->nid); + total_objects = sb->s_op->nr_cached_objects(sb, sc); total_objects += list_lru_shrink_count(&sb->s_dentry_lru, sc); total_objects += list_lru_shrink_count(&sb->s_inode_lru, sc); diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index f2449fd86926..8fcc4ccc5c79 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1537,7 +1537,7 @@ xfs_fs_mount( static long xfs_fs_nr_cached_objects( struct super_block *sb, - int nid) + struct shrink_control *sc) { return xfs_reclaim_inodes_count(XFS_M(sb)); } @@ -1545,10 +1545,9 @@ xfs_fs_nr_cached_objects( static long xfs_fs_free_cached_objects( struct super_block *sb, - long nr_to_scan, - int nid) + struct shrink_control *sc) { - return xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan); + return xfs_reclaim_inodes_nr(XFS_M(sb), sc->nr_to_scan); } static const struct super_operations xfs_super_operations = { diff --git a/include/linux/fs.h b/include/linux/fs.h index cdcb1e9d9613..a20d6586e517 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1635,8 +1635,10 @@ struct super_operations { struct dquot **(*get_dquots)(struct inode *); #endif int (*bdev_try_to_free_page)(struct super_block*, struct page*, gfp_t); - long (*nr_cached_objects)(struct super_block *, int); - long (*free_cached_objects)(struct super_block *, long, int); + long (*nr_cached_objects)(struct super_block *, + struct shrink_control *); + long (*free_cached_objects)(struct super_block *, + struct shrink_control *); }; /* |