[PATCH v2 15/18] xfsprogs: Add helper function xfs_init_attr_trans

[Allison Henderson <allison.henderson@xxxxxxxxxx>]

Source kernel commit: c3546cf5d1e50389a789290f8c21a555e3408aa8

Quick helper function to collapse duplicate code to initialize
transactions for attributes

Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
Suggested-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Chandan Babu R <chandan.babu@xxxxxxxxxx>
Signed-off-by: Dave Chinner <david@xxxxxxxxxxxxx>
Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
---
 libxfs/xfs_attr.c | 33 +++++++++++++++++++++++----------
 libxfs/xfs_attr.h |  2 ++
 2 files changed, 25 insertions(+), 10 deletions(-)

diff --git a/libxfs/xfs_attr.c b/libxfs/xfs_attr.c
index 6833b6e87f3d..bddadb143179 100644
--- a/libxfs/xfs_attr.c
+++ b/libxfs/xfs_attr.c
@@ -196,6 +196,28 @@ xfs_attr_calc_size(
 	return nblks;
 }
 
+/* Initialize transaction reservation for attr operations */
+void
+xfs_init_attr_trans(
+	struct xfs_da_args	*args,
+	struct xfs_trans_res	*tres,
+	unsigned int		*total)
+{
+	struct xfs_mount	*mp = args->dp->i_mount;
+
+	if (args->value) {
+		tres->tr_logres = M_RES(mp)->tr_attrsetm.tr_logres +
+				 M_RES(mp)->tr_attrsetrt.tr_logres *
+				 args->total;
+		tres->tr_logcount = XFS_ATTRSET_LOG_COUNT;
+		tres->tr_logflags = XFS_TRANS_PERM_LOG_RES;
+		*total = args->total;
+	} else {
+		*tres = M_RES(mp)->tr_attrrm;
+		*total = XFS_ATTRRM_SPACE_RES(mp);
+	}
+}
+
 STATIC int
 xfs_attr_try_sf_addname(
 	struct xfs_inode	*dp,
@@ -695,20 +717,10 @@ xfs_attr_set(
 				return error;
 		}
 
-		tres.tr_logres = M_RES(mp)->tr_attrsetm.tr_logres +
-				 M_RES(mp)->tr_attrsetrt.tr_logres *
-					args->total;
-		tres.tr_logcount = XFS_ATTRSET_LOG_COUNT;
-		tres.tr_logflags = XFS_TRANS_PERM_LOG_RES;
-		total = args->total;
-
 		if (!local)
 			rmt_blks = xfs_attr3_rmt_blocks(mp, args->valuelen);
 	} else {
 		XFS_STATS_INC(mp, xs_attr_remove);
-
-		tres = M_RES(mp)->tr_attrrm;
-		total = XFS_ATTRRM_SPACE_RES(mp);
 		rmt_blks = xfs_attr3_rmt_blocks(mp, XFS_XATTR_SIZE_MAX);
 	}
 
@@ -722,6 +734,7 @@ xfs_attr_set(
 	 * Root fork attributes can use reserved data blocks for this
 	 * operation if necessary
 	 */
+	xfs_init_attr_trans(args, &tres, &total);
 	error = xfs_trans_alloc_inode(dp, &tres, total, 0, rsvd, &args->trans);
 	if (error)
 		goto drop_incompat;
diff --git a/libxfs/xfs_attr.h b/libxfs/xfs_attr.h
index 71271d203d01..c0fb4315a7d0 100644
--- a/libxfs/xfs_attr.h
+++ b/libxfs/xfs_attr.h
@@ -515,6 +515,8 @@ int xfs_attr_set_iter(struct xfs_attr_item *attr);
 int xfs_attr_remove_iter(struct xfs_attr_item *attr);
 bool xfs_attr_namecheck(const void *name, size_t length);
 int xfs_attr_calc_size(struct xfs_da_args *args, int *local);
+void xfs_init_attr_trans(struct xfs_da_args *args, struct xfs_trans_res *tres,
+			 unsigned int *total);
 int xfs_attr_set_deferred(struct xfs_da_args *args);
 int xfs_attr_remove_deferred(struct xfs_da_args *args);
 
-- 
2.25.1