[PATCH 38/45] xfs_io: display rt group in verbose bmap output

["Darrick J. Wong" <djwong@xxxxxxxxxx>]

From: Darrick J. Wong <djwong@xxxxxxxxxx>

Display the rt group number in the bmap -v output, just like we do for
regular data files.

Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
 io/bmap.c |   30 ++++++++++++++++++++++--------
 1 file changed, 22 insertions(+), 8 deletions(-)


diff --git a/io/bmap.c b/io/bmap.c
index 27383ca6037..a78e0c65440 100644
--- a/io/bmap.c
+++ b/io/bmap.c
@@ -264,9 +264,16 @@ bmap_f(
 
 		foff_w = boff_w = aoff_w = MINRANGE_WIDTH;
 		tot_w = MINTOT_WIDTH;
-		if (is_rt)
-			sunit = swidth = bbperag = 0;
-		else {
+		if (is_rt) {
+			if (fsgeo.rgcount == 0) {
+				bbperag = 0;
+			} else {
+				bbperag = (off64_t)fsgeo.rgblocks *
+					  (off64_t)fsgeo.blocksize / BBSIZE;
+			}
+			sunit = 0;
+			swidth = 0;
+		} else {
 			bbperag = (off64_t)fsgeo.agblocks *
 				  (off64_t)fsgeo.blocksize / BBSIZE;
 			sunit = (fsgeo.sunit * fsgeo.blocksize) / BBSIZE;
@@ -295,7 +302,7 @@ bmap_f(
 					(long long)(map[i + 1].bmv_block +
 						map[i + 1].bmv_length - 1LL));
 				boff_w = max(boff_w, strlen(bbuf));
-				if (!is_rt) {
+				if (bbperag > 0) {
 					agno = map[i + 1].bmv_block / bbperag;
 					agoff = map[i + 1].bmv_block -
 							(agno * bbperag);
@@ -312,13 +319,20 @@ bmap_f(
 					numlen(map[i+1].bmv_length, 10));
 			}
 		}
-		agno_w = is_rt ? 0 : max(MINAG_WIDTH, numlen(fsgeo.agcount, 10));
+		if (is_rt) {
+			if (fsgeo.rgcount > 0)
+				agno_w = max(MINAG_WIDTH, numlen(fsgeo.rgcount, 10));
+			else
+				agno_w = 0;
+		} else {
+			agno_w = max(MINAG_WIDTH, numlen(fsgeo.agcount, 10));
+		}
 		printf("%4s: %-*s %-*s %*s %-*s %*s%s\n",
 			_("EXT"),
 			foff_w, _("FILE-OFFSET"),
 			boff_w, is_rt ? _("RT-BLOCK-RANGE") : _("BLOCK-RANGE"),
-			agno_w, is_rt ? "" : _("AG"),
-			aoff_w, is_rt ? "" : _("AG-OFFSET"),
+			agno_w, is_rt ? (fsgeo.rgcount ? _("RG") : "") : _("AG"),
+			aoff_w, is_rt ? (fsgeo.rgcount ? _("RG-OFFSET") : "") : _("AG-OFFSET"),
 			tot_w, _("TOTAL"),
 			flg ? _(" FLAGS") : "");
 		for (i = 0; i < egcnt; i++) {
@@ -377,7 +391,7 @@ bmap_f(
 						map[i + 1].bmv_length - 1LL));
 				printf("%4d: %-*s %-*s", i, foff_w, rbuf,
 					boff_w, bbuf);
-				if (!is_rt) {
+				if (bbperag > 0) {
 					agno = map[i + 1].bmv_block / bbperag;
 					agoff = map[i + 1].bmv_block -
 							(agno * bbperag);