[PATCH v7 18/19] xfs: Add remote block helper functions

[Allison Collins <allison.henderson@xxxxxxxxxx>]

This patch adds two new helper functions xfs_attr_store_rmt_blk and
xfs_attr_restore_rmt_blk. These two helpers assist to remove redunant code
associated with storing and retrieving remote blocks during the attr set operations.

Signed-off-by: Allison Collins <allison.henderson@xxxxxxxxxx>
---
 fs/xfs/libxfs/xfs_attr.c | 48 ++++++++++++++++++++++++++++--------------------
 1 file changed, 28 insertions(+), 20 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index b9728d1..f88be36 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -786,6 +786,30 @@ xfs_attr_shortform_addname(xfs_da_args_t *args)
  * External routines when attribute list is one block
  *========================================================================*/
 
+/* Store info about a remote block */
+STATIC void
+xfs_attr_store_rmt_blk(
+	struct xfs_da_args	*args)
+{
+	args->blkno2 = args->blkno;
+	args->index2 = args->index;
+	args->rmtblkno2 = args->rmtblkno;
+	args->rmtblkcnt2 = args->rmtblkcnt;
+	args->rmtvaluelen2 = args->rmtvaluelen;
+}
+
+/* Set stored info about a remote block */
+STATIC void
+xfs_attr_restore_rmt_blk(
+	struct xfs_da_args	*args)
+{
+	args->blkno = args->blkno2;
+	args->index = args->index2;
+	args->rmtblkno = args->rmtblkno2;
+	args->rmtblkcnt = args->rmtblkcnt2;
+	args->rmtvaluelen = args->rmtvaluelen2;
+}
+
 /*
  * Tries to add an attribute to an inode in leaf form
  *
@@ -824,11 +848,7 @@ xfs_attr_leaf_try_add(
 
 		/* save the attribute state for later removal*/
 		args->op_flags |= XFS_DA_OP_RENAME;	/* an atomic rename */
-		args->blkno2 = args->blkno;		/* set 2nd entry info*/
-		args->index2 = args->index;
-		args->rmtblkno2 = args->rmtblkno;
-		args->rmtblkcnt2 = args->rmtblkcnt;
-		args->rmtvaluelen2 = args->rmtvaluelen;
+		xfs_attr_store_rmt_blk(args);
 
 		/*
 		 * clear the remote attr state now that it is saved so that the
@@ -939,11 +959,7 @@ xfs_attr_leaf_addname(
 		 * Dismantle the "old" attribute/value pair by removing
 		 * a "remote" value (if it exists).
 		 */
-		args->index = args->index2;
-		args->blkno = args->blkno2;
-		args->rmtblkno = args->rmtblkno2;
-		args->rmtblkcnt = args->rmtblkcnt2;
-		args->rmtvaluelen = args->rmtvaluelen2;
+		xfs_attr_restore_rmt_blk(args);
 
 		args->dac.dela_state = XFS_DAS_FLIP_LFLAG;
 		return -EAGAIN;
@@ -1189,11 +1205,7 @@ xfs_attr_node_addname(
 
 		/* save the attribute state for later removal*/
 		args->op_flags |= XFS_DA_OP_RENAME;	/* atomic rename op */
-		args->blkno2 = args->blkno;		/* set 2nd entry info*/
-		args->index2 = args->index;
-		args->rmtblkno2 = args->rmtblkno;
-		args->rmtblkcnt2 = args->rmtblkcnt;
-		args->rmtvaluelen2 = args->rmtvaluelen;
+		xfs_attr_store_rmt_blk(args);
 
 		/*
 		 * clear the remote attr state now that it is saved so that the
@@ -1306,11 +1318,7 @@ xfs_attr_node_addname(
 		 * Dismantle the "old" attribute/value pair by removing
 		 * a "remote" value (if it exists).
 		 */
-		args->index = args->index2;
-		args->blkno = args->blkno2;
-		args->rmtblkno = args->rmtblkno2;
-		args->rmtblkcnt = args->rmtblkcnt2;
-		args->rmtvaluelen = args->rmtvaluelen2;
+		xfs_attr_restore_rmt_blk(args);
 
 		/*
 		 * Commit the flag value change and start the next trans in
-- 
2.7.4