btrfs: factor btrfs_init_btree_inode() out of open_ctree()

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
[renamed to btrfs_init_btree_inode]
Signed-off-by: David Sterba <dsterba@suse.cz>

1 files changed, 31 insertions, 25 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index b95b033b2494..6a64e666de05 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -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;