Btrfs: cleanup for unused ref cache stuff

As ref cache has been removed from btrfs, there is no user on
its lock and its check.

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 6923b9e4f90dff571fd1c00753784fc43a622cb9..305002b7bf3a99a2662336eb98eaea088e7a264f 100644 (file)
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1376,9 +1376,6 @@ struct btrfs_fs_info {
        struct rb_root defrag_inodes;
        atomic_t defrag_running;
 
-       spinlock_t ref_cache_lock;
-       u64 total_ref_cache_size;
-
        /*
         * these three are in extended format (availability of single
         * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 34717ac2416a98af62cc8b4280539806af49ef2c..8054f7ccf46a49c371b5cf524acee513c16f6160 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2000,7 +2000,6 @@ int open_ctree(struct super_block *sb,
        INIT_LIST_HEAD(&fs_info->caching_block_groups);
        spin_lock_init(&fs_info->delalloc_lock);
        spin_lock_init(&fs_info->trans_lock);
-       spin_lock_init(&fs_info->ref_cache_lock);
        spin_lock_init(&fs_info->fs_roots_radix_lock);
        spin_lock_init(&fs_info->delayed_iput_lock);
        spin_lock_init(&fs_info->defrag_inodes_lock);
@@ -3214,10 +3213,6 @@ int close_ctree(struct btrfs_root *root)
                printk(KERN_INFO "btrfs: at unmount delalloc count %llu\n",
                       (unsigned long long)fs_info->delalloc_bytes);
        }
-       if (fs_info->total_ref_cache_size) {
-               printk(KERN_INFO "btrfs: at umount reference cache size %llu\n",
-                      (unsigned long long)fs_info->total_ref_cache_size);
-       }
 
        free_extent_buffer(fs_info->extent_root->node);
        free_extent_buffer(fs_info->extent_root->commit_root);