fs.quota.warnings sysctl parameter usage

[Ravi Prakash Putchala]

Thank you. This helps a lot. I will check it out.


On Wed, May 15, 2019 at 5:04 PM Greg KH <greg at kroah.com> wrote:

> On Wed, May 15, 2019 at 03:41:30PM +0530, Ravi Prakash Putchala wrote:
> > On Wed, May 15, 2019 at 1:46 PM Greg KH <greg at kroah.com> wrote:
> >
> > > On Wed, May 15, 2019 at 01:14:24PM +0530, Ravi Prakash Putchala wrote:
> > > > Hi,
> > > >
> > > > I am exploring fs sysctl parameters and unable to find the reference
> to
> > > > fs.quota.warnings parameter in the kernel source code. I tried
> searching
> > > > with fs.quota.warnings (ignoring case) and also
> sysctl_fs_quota_warnings.
> > > >
> > > > Could anyone please point me to the place in the kernel source where
> this
> > > > parameter is used?
> > >
> > > Look at the flag_print_warnings variable in fs/quota/dquot.c
> > >
> >
> > Thank you. But how do I associate it with fs.quota.warnings? Asking
> because
> > this would be useful for me to associate other sysctl parameters in
> > future.
>
> Step back a minute and think about how you create a sysctl entry.  It's
> with a call to register_sysctl_table(), right?  And what is the
> parameter of that function?  It takes a table that describes the sysctl
> directory structure.  And from that you can see the different quota
> sysctl entries and variables.
>
> Look at the sys_table and fs_table structures for that information,
> understand how they work and then you will be able to find any sysctl
> entry in the kernel source quite easily.
>
> hope this helps,
>
> greg k-h
>
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