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Commit f29021b2 authored by Jan Schmidt's avatar Jan Schmidt
Browse files

Btrfs: add tree mod log to fs_info 



Signed-off-by: default avatarJan Schmidt <list.btrfs@jan-o-sch.net>
parent 815a51c7

fs/btrfs/ctree.h

+9 −0
Original line number Diff line number Diff line
@@ -1129,6 +1129,15 @@ struct btrfs_fs_info { 
	spinlock_t delayed_iput_lock;

	struct list_head delayed_iputs;



	/* this protects tree_mod_seq_list */

	spinlock_t tree_mod_seq_lock;

	atomic_t tree_mod_seq;

	struct list_head tree_mod_seq_list;



	/* this protects tree_mod_log */

	rwlock_t tree_mod_log_lock;

	struct rb_root tree_mod_log;



	atomic_t nr_async_submits;

	atomic_t async_submit_draining;

	atomic_t nr_async_bios;

fs/btrfs/disk-io.c

+5 −0
Original line number Diff line number Diff line
@@ -1914,11 +1914,14 @@ int open_ctree(struct super_block *sb, 
	spin_lock_init(&fs_info->delayed_iput_lock);

	spin_lock_init(&fs_info->defrag_inodes_lock);

	spin_lock_init(&fs_info->free_chunk_lock);

	spin_lock_init(&fs_info->tree_mod_seq_lock);

	rwlock_init(&fs_info->tree_mod_log_lock);

	mutex_init(&fs_info->reloc_mutex);



	init_completion(&fs_info->kobj_unregister);

	INIT_LIST_HEAD(&fs_info->dirty_cowonly_roots);

	INIT_LIST_HEAD(&fs_info->space_info);

	INIT_LIST_HEAD(&fs_info->tree_mod_seq_list);

	btrfs_mapping_init(&fs_info->mapping_tree);

	btrfs_init_block_rsv(&fs_info->global_block_rsv);

	btrfs_init_block_rsv(&fs_info->delalloc_block_rsv);
@@ -1931,12 +1934,14 @@ int open_ctree(struct super_block *sb, 
	atomic_set(&fs_info->async_submit_draining, 0);

	atomic_set(&fs_info->nr_async_bios, 0);

	atomic_set(&fs_info->defrag_running, 0);

	atomic_set(&fs_info->tree_mod_seq, 0);

	fs_info->sb = sb;

	fs_info->max_inline = 8192 * 1024;

	fs_info->metadata_ratio = 0;

	fs_info->defrag_inodes = RB_ROOT;

	fs_info->trans_no_join = 0;

	fs_info->free_chunk_space = 0;

	fs_info->tree_mod_log = RB_ROOT;



	/* readahead state */

	INIT_RADIX_TREE(&fs_info->reada_tree, GFP_NOFS & ~__GFP_WAIT);