Document softdep option.

>From NetBSD.

art@ ok.

1 files changed, 9 insertions, 1 deletions

diff --git a/sbin/mount/mount.8 b/sbin/mount/mount.8
index 876f64a14b2..7bac46265c3 100644
--- a/sbin/mount/mount.8
+++ b/sbin/mount/mount.8
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: mount.8,v 1.27 2001/03/28 12:59:39 espie Exp $
+.\"	$OpenBSD: mount.8,v 1.28 2001/04/04 20:23:39 gluk Exp $
 .\"	$NetBSD: mount.8,v 1.11 1995/07/12 06:23:21 cgd Exp $
 .\"
 .\" Copyright (c) 1980, 1989, 1991, 1993
@@ -146,6 +146,14 @@ system crash.
 The most common use of this flag is to speed up
 .Xr restore 8
 where it can give a factor of two speed increase.
+.It softdep
+(FFS only) Mount the filesystem using soft-dependencies. This means
+that metadata will not be written immediately, but is written in an
+ordered fashion to keep the on-disk state of the filesystem consistent.
+This results in significant speedups for file create/delete operations.
+This option will be ignored when using the -u flag and a filesystem
+is already mounted read/write. This option should be used with care.
+It requires the FFS_SOFTUPDATES option to be enabled in the running kernel.
 .It force
 The same as
 .Fl f ;