mount: mention mtab for single mount point mount in mount.8

Karel Zak wrote: "This is very old (10+years) feature. The mount(8) is
trying to found mountpoint/device in fstab and then in mtab.

I guess the original purpose for this feature is user-friendly 'mount
/node -o remount'. Unfortunately, the code does not check for
MS_REMOUNT flag and consults mtab in all cases. (The code is
consulting fstab/mtab before mount options parsing.)"

This commit documents this feature.

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/mount/mount.8 b/mount/mount.8
index a8f64c7b4fed73d583c20b6d9cc547a22afb4f77..4e1b572da9b70dd98557d0270907bf223519ebf3 100644 (file)
--- a/mount/mount.8
+++ b/mount/mount.8
@@ -274,7 +274,9 @@ option will make mount fork, so that the
 filesystems are mounted simultaneously.
 .LP
 When mounting a filesystem mentioned in
-.IR fstab ,
+.IR fstab
+or
+.IR mtab ,
 it suffices to give only the device, or only the mount point.