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| author | Dave Chinner <dchinner@redhat.com> | 2015-03-04 12:37:22 -0500 |
|---|---|---|
| committer | Josef Bacik <jbacik@fb.com> | 2015-08-17 18:39:46 -0400 |
| commit | 74278da9f70d84d715601fe794567a6d2bfdf078 (patch) | |
| tree | 49262a88fc42b85bfe4930f5cd7a832d5ba647c6 /fs/super.c | |
| parent | cbedaac63481dea52327127a9f1c60f092bd6b07 (diff) | |
| download | talos-obmc-linux-74278da9f70d84d715601fe794567a6d2bfdf078.tar.gz talos-obmc-linux-74278da9f70d84d715601fe794567a6d2bfdf078.zip | |
inode: convert inode_sb_list_lock to per-sb
The process of reducing contention on per-superblock inode lists
starts with moving the locking to match the per-superblock inode
list. This takes the global lock out of the picture and reduces the
contention problems to within a single filesystem. This doesn't get
rid of contention as the locks still have global CPU scope, but it
does isolate operations on different superblocks form each other.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/super.c')
| -rw-r--r-- | fs/super.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/super.c b/fs/super.c index b61372354f2b..c808183554a2 100644 --- a/fs/super.c +++ b/fs/super.c @@ -191,6 +191,7 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags) INIT_HLIST_NODE(&s->s_instances); INIT_HLIST_BL_HEAD(&s->s_anon); INIT_LIST_HEAD(&s->s_inodes); + spin_lock_init(&s->s_inode_list_lock); if (list_lru_init_memcg(&s->s_dentry_lru)) goto fail; @@ -399,7 +400,7 @@ void generic_shutdown_super(struct super_block *sb) sync_filesystem(sb); sb->s_flags &= ~MS_ACTIVE; - fsnotify_unmount_inodes(&sb->s_inodes); + fsnotify_unmount_inodes(sb); evict_inodes(sb); |
