Use the .Tn macro for generic FreeBSD references. Other minor cleanup.

1 files changed, 12 insertions, 7 deletions

diff --git a/lib/libc/sys/mmap.2 b/lib/libc/sys/mmap.2
index 1e8109d..c5d18e2 100644
--- a/lib/libc/sys/mmap.2
+++ b/lib/libc/sys/mmap.2
@@ -216,21 +216,26 @@ was specified and insufficient memory was available.
 .Xr munlock 2 ,
 .Xr munmap 2 ,
 .Xr getpagesize 3
-
 .Sh BUGS
 .Ar len
 is limited to 2GB.  Mmapping slightly more than 2GB doesn't work, but
 it is possible to map a window of size (filesize % 2GB) for file sizes 
 of slightly less than 2G, 4GB, 6GB and 8GB.
-
+.Pp
 The limit is imposed for a variety of reasons. Most of them have to do
-with FreeBSD not wanting to use 64 bit offsets in the VM system due to
-the extreme performance penalty. So FreeBSD uses 32bit page indexes and
-this gives FreeBSD a maximum of 8TB filesizes. It's actually bugs in
+with
+.Tn FreeBSD
+not wanting to use 64 bit offsets in the VM system due to
+the extreme performance penalty. So
+.Tn FreeBSD
+uses 32bit page indexes and
+this gives
+.Tn FreeBSD
+a maximum of 8TB filesizes. It's actually bugs in
 the filesystem code that causes the limit to be further restricted to
 1TB (loss of precision when doing blockno calculations).
-
+.Pp
 Another reason for the 2GB limit is that filesystem metadata can
 reside at negative offsets.
-
+.Pp
 We currently can only deal with page aligned file offsets.