[PATCH v15 01/22] xfs: Add helper xfs_attr_node_remove_step

[Allison Henderson <allison.henderson@oracle.com>]

From: Allison Collins <allison.henderson@oracle.com>

This patch adds a new helper function xfs_attr_node_remove_step.  This
will help simplify and modularize the calling function
xfs_attr_node_removename.

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
---
 fs/xfs/libxfs/xfs_attr.c | 46 ++++++++++++++++++++++++++++++++++------------
 1 file changed, 34 insertions(+), 12 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index 472b303..28ff93d 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -1228,19 +1228,14 @@ xfs_attr_node_remove_rmt(
  * the root node (a special case of an intermediate node).
  */
 STATIC int
-xfs_attr_node_removename(
-	struct xfs_da_args	*args)
+xfs_attr_node_remove_step(
+	struct xfs_da_args	*args,
+	struct xfs_da_state	*state)
 {
-	struct xfs_da_state	*state;
 	struct xfs_da_state_blk	*blk;
 	int			retval, error;
 	struct xfs_inode	*dp = args->dp;
 
-	trace_xfs_attr_node_removename(args);
-
-	error = xfs_attr_node_removename_setup(args, &state);
-	if (error)
-		goto out;
 
 	/*
 	 * If there is an out-of-line value, de-allocate the blocks.
@@ -1250,7 +1245,7 @@ xfs_attr_node_removename(
 	if (args->rmtblkno > 0) {
 		error = xfs_attr_node_remove_rmt(args, state);
 		if (error)
-			goto out;
+			return error;
 	}
 
 	/*
@@ -1267,18 +1262,45 @@ xfs_attr_node_removename(
 	if (retval && (state->path.active > 1)) {
 		error = xfs_da3_join(state);
 		if (error)
-			goto out;
+			return error;
 		error = xfs_defer_finish(&args->trans);
 		if (error)
-			goto out;
+			return error;
 		/*
 		 * Commit the Btree join operation and start a new trans.
 		 */
 		error = xfs_trans_roll_inode(&args->trans, dp);
 		if (error)
-			goto out;
+			return error;
 	}
 
+	return error;
+}
+
+/*
+ * Remove a name from a B-tree attribute list.
+ *
+ * This routine will find the blocks of the name to remove, remove them and
+ * shrink the tree if needed.
+ */
+STATIC int
+xfs_attr_node_removename(
+	struct xfs_da_args	*args)
+{
+	struct xfs_da_state	*state = NULL;
+	int			error;
+	struct xfs_inode	*dp = args->dp;
+
+	trace_xfs_attr_node_removename(args);
+
+	error = xfs_attr_node_removename_setup(args, &state);
+	if (error)
+		goto out;
+
+	error = xfs_attr_node_remove_step(args, state);
+	if (error)
+		goto out;
+
 	/*
 	 * If the result is small enough, push it all into the inode.
 	 */
-- 
2.7.4