The man page is talking about read-only bind mounts (-o
remount,bind,ro), but this feature also works for another VFS flags
like nodev, suid, etc. For example:
mount -o remount,bind,noatime /mountpoint
is a valid command.
Addresses: https://github.com/karelzak/util-linux/issues/342
Signed-off-by: Karel Zak <kzak@redhat.com>
.B mount \-\-bind
.I olddir newdir
.br
-.B mount \-o remount,ro,bind
+.B mount \-o remount,bind,ro
.I olddir newdir
.RE
.I newdir
will be read-only.
-It's impossible to change mount options recursively
-(for example with \fB-o rbind,ro\fR).
+It's also possible to change nosuid, nodev, noexec, noatime, nodiratime and
+relatime VFS entry flags by "remount,bind" operation. It's impossible to change
+mount options recursively (for example with \fB-o rbind,ro\fR).
.RE
.SS The move operation