[PATCH 1/2] nfsd(7): minimal updates

J. Bruce Fields
2020-03-19T19:15:37Z

From: "J. Bruce Fields" <bfields@redhat.com>

The nfsd(7) man page has some useful documentation of the files under
/proc/fs/nfsd/ and proc/net/rpc, but it's many years out of date.

As a start, banish any discussion of the long-deprecated nfsctl
systemcall to a NOTES section at the end, and admit that there are more
than 3 files under /proc/fs/nfsd/.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
utils/exportfs/nfsd.man | 27 ++++++++++++++-------------
1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/utils/exportfs/nfsd.man b/utils/exportfs/nfsd.man
index 9efa29f9f01c..1392f3926053 100644
--- a/utils/exportfs/nfsd.man
+++ b/utils/exportfs/nfsd.man
@@ -13,14 +13,8 @@ nfsd \- special filesystem for controlling Linux NFS server
The
.B nfsd
filesystem is a special filesystem which provides access to the Linux
-NFS server. The filesystem consists of a single directory which
-contains a number of files. These files are actually gateways into
-the NFS server. Writing to them can affect the server. Reading from
-them can provide information about the server.
-.P
-This file system is only available in Linux 2.6 and later series
-kernels (and in the later parts of the 2.5 development series leading
-up to 2.6). This man page does not apply to 2.4 and earlier.
+NFS server. Writing to files in this filesystem can affect the server.
+Reading from them can provide information about the server.
.P
As well as this filesystem, there are a collection of files in the
.B procfs
@@ -38,13 +32,10 @@ filesystem mounted at
.B /proc/fs/nfsd
or
.BR /proc/fs/nfs .
-If it is not mounted, they will fall-back on 2.4 style functionality.
-This involves accessing the NFS server via a systemcall. This
-systemcall is scheduled to be removed after the 2.6 kernel series.
.SH DETAILS
-The three files in the
+Files in the
.B nfsd
-filesystem are:
+filesystem include:
.TP
.B exports
This file contains a list of filesystems that are currently exported
@@ -191,6 +182,16 @@ number represents a bit-pattern where bits that are set cause certain
classes of tracing to be enabled. Consult the kernel header files to
find out what number correspond to what tracing.

+.SH NOTES
+This file system is only available in Linux 2.6 and later series
+kernels (and in the later parts of the 2.5 development series leading
+up to 2.6). This man page does not apply to 2.4 and earlier.
+.P
+Previously the nfsctl systemcall was used for communication between nfsd
+and user utilities. That systemcall was removed in kernel version 3.1.
+Older nfs-utils versions were able to fall back to nfsctl if necessary;
+that was removed from nfs-utils 1.3.5.
+
.SH SEE ALSO
.BR nfsd (8),
.BR rpc.nfsd (8),
--
2.25.1