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-rw-r--r--man/mkfs.btrfs.8.in7
1 files changed, 7 insertions, 0 deletions
diff --git a/man/mkfs.btrfs.8.in b/man/mkfs.btrfs.8.in
index 1e14c6c0..432db1b2 100644
--- a/man/mkfs.btrfs.8.in
+++ b/man/mkfs.btrfs.8.in
@@ -9,6 +9,7 @@ mkfs.btrfs \- create an btrfs filesystem
[ \fB \-l\fP\fI leafsize\fP ]
[ \fB \-L\fP\fI label\fP ]
[ \fB \-m\fP\fI metadata profile\fP ]
+[ \fB \-M\fP\fI mixed data+metadata\fP ]
[ \fB \-n\fP\fI nodesize\fP ]
[ \fB \-s\fP\fI sectorsize\fP ]
[ \fB \-h\fP ]
@@ -45,6 +46,12 @@ Specify a label for the filesystem.
Specify how metadata must be spanned across the devices specified. Valid
values are raid0, raid1, raid10 or single.
.TP
+\fB\-M\fR, \fB\-\-mixed\fR
+Mix data and metadata chunks together for more efficient space
+utilization. This feature incurs a performance penalty in
+larger filesystems. It is recommended for use with filesystems
+of 1 GiB or smaller.
+.TP
\fB\-n\fR, \fB\-\-nodesize \fIsize\fR
Specify the nodesize. By default the value is set to the pagesize.
.TP