Formatting fixes plus additional material in ERRORS

man2/swapon.2

@@ -30,6 +30,7 @@
 .\" Modified 1998-09-08 by aeb
 .\" Modified 2004-06-17 by Michael Kerrisk <mtk-manpages@gmx.net>
 .\" Modified 2004-10-10 by aeb
+.\" 2004-12-14 mtk, Anand Kumria: added new errors
 .\"
 .TH SWAPON 2 2004-10-10 "Linux 2.6.7" "Linux Programmer's Manual"
 .SH NAME
@@ -45,14 +46,14 @@ swapon, swapoff \- start/stop swapping to file/device
 .br
 .BI "int swapoff(const char *" path );
 .SH DESCRIPTION
-.B swapon
+.BR swapon ()
 sets the swap area to the file or block device specified by
 .IR path .
-.B swapoff
+.BR swapoff ()
 stops swapping to the file or block device specified by
 .IR path .
 .PP
-.B swapon
+.BR swapon ()
 takes a
 .I swapflags
 argument.
@@ -61,7 +62,9 @@ If
 has the
 .I SWAP_FLAG_PREFER
 bit turned on, the new swap area will have a higher priority than default.
-The priority is encoded as:
+The priority is encoded within
+.I swapflags
+as:
 .br
 .sp
 .I "    (prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK"
@@ -99,6 +102,7 @@ is set appropriately.
 .SH ERRORS
 .TP
 .B EBUSY
+.RB (for swapon ())
 The specified
 .I path
 is already being used as a swap area.
@@ -107,7 +111,13 @@ is already being used as a swap area.
 The file
 .I path
 exists, but refers neither to a regular file nor to a block device;
-or, the indicated path does not contain a valid swap signature.
+or, for
+.BR swapon (),
+the indicated path does not contain a valid swap signature;
+or, for 
+.BR swapoff (),
+.I path
+is not currently a swap area.
 .TP
 .B ENFILE
 The system limit on the total number of open files has been reached.
@@ -129,7 +139,9 @@ capability, or all
 .SH "CONFORMING TO"
 These functions are Linux specific and should not be used in programs
 intended to be portable.
-The second `swapflags' argument was introduced in Linux 1.3.2.
+The second
+.I swapflags
+argument was introduced in Linux 1.3.2.
 .SH NOTES
 The partition or path must be prepared with
 .BR mkswap (8).