mkfs: enable reverse mapping by default
Now that online fsck is feature complete, there's actually a compelling
story for having the reverse mappings enabled. Turn it on by default.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
diff --git a/man/man8/mkfs.xfs.8.in b/man/man8/mkfs.xfs.8.in
index 3a44b92..c152546 100644
--- a/man/man8/mkfs.xfs.8.in
+++ b/man/man8/mkfs.xfs.8.in
@@ -289,8 +289,8 @@
.IP
By default,
.B mkfs.xfs
-will not create reverse mapping btrees. This feature is only available
-for filesystems created with the (default)
+will create reverse mapping btrees when possible.
+This feature is only available for filesystems created with the (default)
.B \-m crc=1
option set. When the option
.B \-m crc=0
diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c
index a3dcc81..c522cb4 100644
--- a/mkfs/xfs_mkfs.c
+++ b/mkfs/xfs_mkfs.c
@@ -4134,7 +4134,7 @@
.dirftype = true,
.finobt = true,
.spinodes = true,
- .rmapbt = false,
+ .rmapbt = true,
.reflink = true,
.inobtcnt = true,
.parent_pointers = false,
