Re: NODIRATIME patch for 2.1.73

Adam D. Bradley (
Sun, 21 Dec 1997 23:31:46 -0500 (EST)

> > Perhaps the best option is to provide some mechanism (/etc or /proc file)
> > whereby mount could divine the latest mounting secrets at runtime? Some
> > hack on /proc/filesystems maybe, or a new /proc/fsoptions...
> I don't see what this has to do with the NODIRATIME patch?!?!
> BTW: /proc/mounts will tell you what options were used when a
> filesystem was mounted.

I think you missed the point... the problem with new mount options is
that they need to be specified explicitly in the userspace code for
mount as well as in the filesystem code.

This is actually an elegant idea... allow /proc/filesystems to
specify a list of textual names for options and their corresponding
binary flag values. This makes adding new mount options a non-issue
from the point of view of the mount program: if it sees an option it
doesn't recognize, it checks the appropriate /proc/filesystems line to
see if that specifies it.

Just ideas,

Things look so bad everywhere      Adam D. Bradley
In this whole world what is fair        Boston University Computer Science
We walk blind and we try to see             Ph.D. student and Linux hacker
Falling behind in what could be  ---->  Bring me a Higher Love  ---->  <><