Update dmsetup man page.

man/dmsetup.8.in

@@ -31,7 +31,10 @@ dmsetup \- low level logical volume management
 .br
 .B dmsetup ls
 .br
-.B dmsetup info
+.B dmsetup info 
+.I [device_name]
+.br
+.B dmsetup info -c|-C|--columns [--noheadings] [-o name]
 .I [device_name]
 .br
 .B dmsetup deps
@@ -53,6 +56,13 @@ dmsetup \- low level logical volume management
 .B dmsetup targets
 .br
 .B dmsetup version
+.br
+
+.B devmap_name
+.I major minor
+.br
+.B devmap_name 
+.I major:minor
 .ad b
 .SH DESCRIPTION
 dmsetup manages logical devices that use the device-mapper driver.  
@@ -61,16 +71,38 @@ each sector (512 bytes) in the logical device.
 
 The first argument to dmsetup is a command. 
 The second argument is the logical device name or uuid.
+
+Invoking the command as \fBdevmap_name\fP is equivalent to
+.br
+\fBdmsetup info -c --noheadings -j \fImajor\fB -m \fIminor\fP.
 .SH OPTIONS
+.IP \fB-c|-C|--columns
+.br
+Display output in columns rather than as Field: Value lines.
 .IP \fB-j|--major\ \fImajor
 .br
-Specify the major number to use on creation.
-.IP \fB-j|--minor\ \fIminor
+Specify the major number.
+.IP \fB-m|--minor\ \fIminor
 .br
-Specify the minor number to use on creation.
+Specify the minor number.
+.IP \fB-n|--noheadings
+.br
+Suppress the headings line when using columnar output.
+.IP \fB--noopencount
+.br
+Tell the kernel not to supply the open reference count for the device.
+.IP \fB--notable
+.br
+When creating a device, don't load any table.
+.IP \fB-o|--options
+.br
+Specify which fields to display.  Only \fB-o\ name\fP is supported.
 .IP \fB-r|--readonly
 .br
 Set the table being loaded read-only.
+.IP \fB-u|--uuid
+.br
+Specify the uuid.
 .IP \fB-v|--verbose [-v|--verbose]
 .br
 Produce additional output.