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Commit 0647d6bd authored by liubo's avatar liubo Committed by Chris Mason
Browse files

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: default avatarLiu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: default avatarLiu Bo <bo.li.liu@oracle.com>
parent 8407aa46

fs/btrfs/ctree.h

+0 −3
Original line number Diff line number Diff line
@@ -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

fs/btrfs/disk-io.c

+0 −5
Original line number Diff line number Diff line
@@ -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);