xfs: factor out a xfs_dir_createname_args helper

Add a helper to switch between the different directory formats for
creating a directory entry and to handle the XFS_DA_OP_JUSTCHECK flag
based on the passed in ino number field.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>

fs/xfs/libxfs/xfs_dir2.c

@@ -256,6 +256,33 @@ xfs_dir_init(
 	return error;
 }
 
+int
+xfs_dir_createname_args(
+	struct xfs_da_args	*args)
+{
+	bool			is_block, is_leaf;
+	int			error;
+
+	if (!args->inumber)
+		args->op_flags |= XFS_DA_OP_JUSTCHECK;
+
+	if (args->dp->i_df.if_format == XFS_DINODE_FMT_LOCAL)
+		return xfs_dir2_sf_addname(args);
+
+	error = xfs_dir2_isblock(args, &is_block);
+	if (error)
+		return error;
+	if (is_block)
+		return xfs_dir2_block_addname(args);
+
+	error = xfs_dir2_isleaf(args, &is_leaf);
+	if (error)
+		return error;
+	if (is_leaf)
+		return xfs_dir2_leaf_addname(args);
+	return xfs_dir2_node_addname(args);
+}
+
 /*
  * Enter a name in a directory, or check for available space.
  * If inum is 0, only the available space test is performed.
@@ -270,7 +297,6 @@ xfs_dir_createname(
 {
 	struct xfs_da_args	*args;
 	int			rval;
-	bool			v;
 
 	ASSERT(S_ISDIR(VFS_I(dp)->i_mode));
 
@@ -297,31 +323,8 @@ xfs_dir_createname(
 	args->trans = tp;
 	args->op_flags = XFS_DA_OP_ADDNAME | XFS_DA_OP_OKNOENT;
 	args->owner = dp->i_ino;
-	if (!inum)
-		args->op_flags |= XFS_DA_OP_JUSTCHECK;
-
-	if (dp->i_df.if_format == XFS_DINODE_FMT_LOCAL) {
-		rval = xfs_dir2_sf_addname(args);
-		goto out_free;
-	}
 
-	rval = xfs_dir2_isblock(args, &v);
-	if (rval)
-		goto out_free;
-	if (v) {
-		rval = xfs_dir2_block_addname(args);
-		goto out_free;
-	}
-
-	rval = xfs_dir2_isleaf(args, &v);
-	if (rval)
-		goto out_free;
-	if (v)
-		rval = xfs_dir2_leaf_addname(args);
-	else
-		rval = xfs_dir2_node_addname(args);
-
-out_free:
+	rval = xfs_dir_createname_args(args);
 	kfree(args);
 	return rval;
 }

fs/xfs/libxfs/xfs_dir2.h

@@ -67,6 +67,7 @@ extern int xfs_dir_canenter(struct xfs_trans *tp, struct xfs_inode *dp,
 				struct xfs_name *name);
 
 int xfs_dir_lookup_args(struct xfs_da_args *args);
+int xfs_dir_createname_args(struct xfs_da_args *args);
 
 /*
  * Direct call from the bmap code, bypassing the generic directory layer.

fs/xfs/scrub/dir_repair.c

@@ -687,7 +687,6 @@ xrep_dir_replay_createname(
 {
 	struct xfs_scrub	*sc = rd->sc;
 	struct xfs_inode	*dp = rd->sc->tempip;
-	bool			is_block, is_leaf;
 	int			error;
 
 	ASSERT(S_ISDIR(VFS_I(dp)->i_mode));
@@ -702,23 +701,7 @@ xrep_dir_replay_createname(
 	rd->args.inumber = inum;
 	rd->args.total = total;
 	rd->args.op_flags = XFS_DA_OP_ADDNAME | XFS_DA_OP_OKNOENT;
-
-	if (dp->i_df.if_format == XFS_DINODE_FMT_LOCAL)
-		return xfs_dir2_sf_addname(&rd->args);
-
-	error = xfs_dir2_isblock(&rd->args, &is_block);
-	if (error)
-		return error;
-	if (is_block)
-		return xfs_dir2_block_addname(&rd->args);
-
-	error = xfs_dir2_isleaf(&rd->args, &is_leaf);
-	if (error)
-		return error;
-	if (is_leaf)
-		return xfs_dir2_leaf_addname(&rd->args);
-
-	return xfs_dir2_node_addname(&rd->args);
+	return xfs_dir_createname_args(&rd->args);
 }
 
 /* Replay a stashed removename onto the temporary directory. */