btrfs: pass btrfs_inode to btrfs_clear_delalloc_extent

The function is for internal interfaces so we should use the
btrfs_inode.
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/btrfs_inode.h

@@ -473,7 +473,7 @@ struct inode *btrfs_new_subvol_inode(struct user_namespace *mnt_userns,
 				     struct inode *dir);
  void btrfs_set_delalloc_extent(struct btrfs_inode *inode, struct extent_state *state,
 			        u32 bits);
-void btrfs_clear_delalloc_extent(struct inode *inode,
+void btrfs_clear_delalloc_extent(struct btrfs_inode *inode,
 				 struct extent_state *state, u32 bits);
 void btrfs_merge_delalloc_extent(struct btrfs_inode *inode, struct extent_state *new,
 				 struct extent_state *other);

fs/btrfs/extent-io-tree.c

@@ -509,7 +509,7 @@ static struct extent_state *clear_state_bit(struct extent_io_tree *tree,
 	int ret;
 
 	if (tree->inode)
-		btrfs_clear_delalloc_extent(&tree->inode->vfs_inode, state, bits);
+		btrfs_clear_delalloc_extent(tree->inode, state, bits);
 
 	ret = add_extent_changeset(state, bits_to_clear, changeset, 0);
 	BUG_ON(ret < 0);

fs/btrfs/inode.c

@@ -2471,11 +2471,10 @@ void btrfs_set_delalloc_extent(struct btrfs_inode *inode, struct extent_state *s
  * Once a range is no longer delalloc this function ensures that proper
  * accounting happens.
  */
-void btrfs_clear_delalloc_extent(struct inode *vfs_inode,
+void btrfs_clear_delalloc_extent(struct btrfs_inode *inode,
 				 struct extent_state *state, u32 bits)
 {
-	struct btrfs_inode *inode = BTRFS_I(vfs_inode);
-	struct btrfs_fs_info *fs_info = btrfs_sb(vfs_inode->i_sb);
+	struct btrfs_fs_info *fs_info = inode->root->fs_info;
 	u64 len = state->end + 1 - state->start;
 	u32 num_extents = count_max_extents(fs_info, len);