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Commit f37938e0 authored by Eric Sandeen's avatar Eric Sandeen Committed by David Sterba
Browse files

btrfs: factor btrfs_init_btree_inode() out of open_ctree() 



Signed-off-by: default avatarEric Sandeen <sandeen@redhat.com>
[renamed to btrfs_init_btree_inode]
Signed-off-by: default avatarDavid Sterba <dsterba@suse.cz>
parent 779a65a4

fs/btrfs/disk-io.c

+31 −25
Original line number Diff line number Diff line
@@ -2169,6 +2169,36 @@ static void btrfs_init_balance(struct btrfs_fs_info *fs_info) 
	init_waitqueue_head(&fs_info->balance_wait_q);

}



static void btrfs_init_btree_inode(struct btrfs_fs_info *fs_info,

				   struct btrfs_root *tree_root)

{

	fs_info->btree_inode->i_ino = BTRFS_BTREE_INODE_OBJECTID;

	set_nlink(fs_info->btree_inode, 1);

	/*

	 * we set the i_size on the btree inode to the max possible int.

	 * the real end of the address space is determined by all of

	 * the devices in the system

	 */

	fs_info->btree_inode->i_size = OFFSET_MAX;

	fs_info->btree_inode->i_mapping->a_ops = &btree_aops;

	fs_info->btree_inode->i_mapping->backing_dev_info = &fs_info->bdi;



	RB_CLEAR_NODE(&BTRFS_I(fs_info->btree_inode)->rb_node);

	extent_io_tree_init(&BTRFS_I(fs_info->btree_inode)->io_tree,

			     fs_info->btree_inode->i_mapping);

	BTRFS_I(fs_info->btree_inode)->io_tree.track_uptodate = 0;

	extent_map_tree_init(&BTRFS_I(fs_info->btree_inode)->extent_tree);



	BTRFS_I(fs_info->btree_inode)->io_tree.ops = &btree_extent_io_ops;



	BTRFS_I(fs_info->btree_inode)->root = tree_root;

	memset(&BTRFS_I(fs_info->btree_inode)->location, 0,

	       sizeof(struct btrfs_key));

	set_bit(BTRFS_INODE_DUMMY,

		&BTRFS_I(fs_info->btree_inode)->runtime_flags);

	btrfs_insert_inode_hash(fs_info->btree_inode);

}



int open_ctree(struct super_block *sb,

	       struct btrfs_fs_devices *fs_devices,

	       char *options)
@@ -2329,31 +2359,7 @@ int open_ctree(struct super_block *sb, 
	sb->s_blocksize_bits = blksize_bits(4096);

	sb->s_bdi = &fs_info->bdi;



	fs_info->btree_inode->i_ino = BTRFS_BTREE_INODE_OBJECTID;

	set_nlink(fs_info->btree_inode, 1);

	/*

	 * we set the i_size on the btree inode to the max possible int.

	 * the real end of the address space is determined by all of

	 * the devices in the system

	 */

	fs_info->btree_inode->i_size = OFFSET_MAX;

	fs_info->btree_inode->i_mapping->a_ops = &btree_aops;

	fs_info->btree_inode->i_mapping->backing_dev_info = &fs_info->bdi;



	RB_CLEAR_NODE(&BTRFS_I(fs_info->btree_inode)->rb_node);

	extent_io_tree_init(&BTRFS_I(fs_info->btree_inode)->io_tree,

			     fs_info->btree_inode->i_mapping);

	BTRFS_I(fs_info->btree_inode)->io_tree.track_uptodate = 0;

	extent_map_tree_init(&BTRFS_I(fs_info->btree_inode)->extent_tree);



	BTRFS_I(fs_info->btree_inode)->io_tree.ops = &btree_extent_io_ops;



	BTRFS_I(fs_info->btree_inode)->root = tree_root;

	memset(&BTRFS_I(fs_info->btree_inode)->location, 0,

	       sizeof(struct btrfs_key));

	set_bit(BTRFS_INODE_DUMMY,

		&BTRFS_I(fs_info->btree_inode)->runtime_flags);

	btrfs_insert_inode_hash(fs_info->btree_inode);

	btrfs_init_btree_inode(fs_info, tree_root);



	spin_lock_init(&fs_info->block_group_cache_lock);

	fs_info->block_group_cache_tree = RB_ROOT;