btrfs: change for_rename argument of btrfs_record_unlink_dir() to bool

The for_rename argument of btrfs_record_unlink_dir() is defined as an
integer, but the argument is in fact used as a boolean. So change it to
a boolean to make its use more clear.

Reviewed-by: Anand Jain <[e-mail]>
Signed-off-by: Filipe Manana <[e-mail]>
Reviewed-by: David Sterba <[e-mail]>
Signed-off-by: David Sterba <[e-mail]>

fs/btrfs/inode.c

···
 	}
 
 	btrfs_record_unlink_dir(trans, BTRFS_I(dir), BTRFS_I(d_inode(dentry)),
-			0);
+				false);
 
 	ret = btrfs_unlink_inode(trans, BTRFS_I(dir), BTRFS_I(d_inode(dentry)),
 				 &fname.disk_name);
···
 
 	if (old_dentry->d_parent != new_dentry->d_parent) {
 		btrfs_record_unlink_dir(trans, BTRFS_I(old_dir),
-				BTRFS_I(old_inode), 1);
+					BTRFS_I(old_inode), true);
 		btrfs_record_unlink_dir(trans, BTRFS_I(new_dir),
-				BTRFS_I(new_inode), 1);
+					BTRFS_I(new_inode), true);
 	}
 
 	/* src is a subvolume */
···
 
 	if (old_dentry->d_parent != new_dentry->d_parent)
 		btrfs_record_unlink_dir(trans, BTRFS_I(old_dir),
-				BTRFS_I(old_inode), 1);
+					BTRFS_I(old_inode), true);
 
 	if (unlikely(old_ino == BTRFS_FIRST_FREE_OBJECTID)) {
 		ret = btrfs_unlink_subvol(trans, BTRFS_I(old_dir), old_dentry);

fs/btrfs/tree-log.c

···
  */
 void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,
 			     struct btrfs_inode *dir, struct btrfs_inode *inode,
-			     int for_rename)
+			     bool for_rename)
 {
 	/*
 	 * when we're logging a file, if it hasn't been renamed

fs/btrfs/tree-log.h

···
 void btrfs_pin_log_trans(struct btrfs_root *root);
 void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,
 			     struct btrfs_inode *dir, struct btrfs_inode *inode,
-			     int for_rename);
+			     bool for_rename);
 void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans,
 				   struct btrfs_inode *dir);
 void btrfs_log_new_name(struct btrfs_trans_handle *trans,