This patch removes the mount options of the proc filesystem.  They don't
have any effect since 2.4.something.

Only proc_fill_super() calls parse_options, notably proc_remount() does
not.  And proc_fill_super() is only called at the very first mount which in
turn is the one caused by kern_mount() in fs/proc/root.c and that passes a
NULL pointer as mount options string.  It is called only once because proc
is a filesystem with a single super_block (i.e.  it uses get_sb_single()).

Since noone seems to miss the uid and gid options so far I suggest to
simply remove them.  Their function can be easily performed in userspace.
E.g.  this (if it worked like intended):

    # mount -t proc -o uid=procuser,gid=procgrp proc /proc

can be done like so, probably in some init script:

    # mount -t proc proc /proc && chown procuser:procgrp /proc

But I don't see why anyone would want to do that in the first place.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>