Re: [PATCH] cifs: document 'fsc' mount option

[Randy Dunlap <randy.dunlap-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>]

On Tue, 27 Jul 2010 11:38:20 -0500 Steve French wrote:

> On Tue, Jul 27, 2010 at 11:33 AM, Suresh Jayaraman <sjayaraman@suse.de> wrote:
> > On 07/27/2010 08:51 PM, Steve French wrote:
> >> scripts/extract-ikconfig could be run against the image (or look at
> >> /proc/config.gz) - but unless there is an easier way to view kernel
> >> config options on particular distros via distro specific tools -
> >> probably easier just to note that CONFIG_FSCACHE must be selected in
> >> the kernel build (since it forces dependencies on the other kernel
> >> options being set)
> >
> > Does something like
> >        $zcat /proc/config.gz | grep CONFIG_CIFS_FSCACHE
> >
> > might work on all distros?
> >
> > But, Jeff's idea of having a features file in /proc sounds good. Apart
> > from using them as a reference to check in documentation, it could be a
> > useful information while collecting debugging output as well..?
> 
> Seems reasonable - but wondering if other file systems have run into the same
> problem - how to view their build/config options - and how they have
> solved it (if at all) so ccing fsdevel

There is no guarantee that scripts/extract-ikconfig can find anything,
or that proc/config.gz is present.

The safe, sure-to-work thing to do is create some strings or files or whatever
based on CONFIG_* kconfig symbols during kernel build, then those hints will
be available at kernel run-time.

---
~Randy
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