Re: linux-next: manual merge of the vfs tree with the parisc-hd tree

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Luis Chamberlain <mcgrof@xxxxxxxxxx> writes:

> On Wed, May 13, 2020 at 08:42:30AM -0500, Eric W. Biederman wrote:
>> Luis Chamberlain <mcgrof@xxxxxxxxxx> writes:
>> 
>> > On Tue, May 12, 2020 at 12:40:55PM -0500, Eric W. Biederman wrote:
>> >> Luis Chamberlain <mcgrof@xxxxxxxxxx> writes:
>> >> 
>> >> > On Tue, May 12, 2020 at 06:52:35AM -0500, Eric W. Biederman wrote:
>> >> >> Luis Chamberlain <mcgrof@xxxxxxxxxx> writes:
>> >> >> 
>> >> >> > +static struct ctl_table fs_base_table[] = {
>> >> >> > +	{
>> >> >> > +		.procname	= "fs",
>> >> >> > +		.mode		= 0555,
>> >> >> > +		.child		= fs_table,
>> >> >> > +	},
>> >> >> > +	{ }
>> >> >> > +};
>> >> >>   ^^^^^^^^^^^^^^^^^^^^^^^^ You don't need this at all.
>> >> >> > > +static int __init fs_procsys_init(void)
>> >> >> > +{
>> >> >> > +	struct ctl_table_header *hdr;
>> >> >> > +
>> >> >> > +	hdr = register_sysctl_table(fs_base_table);
>> >> >>               ^^^^^^^^^^^^^^^^^^^^^ Please use register_sysctl instead.
>> >> >> 	AKA
>> >> >>         hdr = register_sysctl("fs", fs_table);
>> >> >
>> >> > Ah, much cleaner thanks!
>> >> 
>> >> It is my hope you we can get rid of register_sysctl_table one of these
>> >> days.  It was the original interface but today it is just a
>> >> compatibility wrapper.
>> >> 
>> >> I unfortunately ran out of steam last time before I finished converting
>> >> everything over.
>> >
>> > Let's give it one more go. I'll start with the fs stuff.
>> 
>> Just to be clear moving the tables out of kernel/sysctl.c is a related
>> but slightly different problem.
>
> Sure, but also before we go on this crusade, how about we add a few
> helpers:
>
> register_sysctl_kernel()
> register_sysctl_vm()
> register_sysctl_fs()
> register_sysctl_debug()
> register_sysctl_dev()

Hmm.

  register_sysctl("kernel")

> That should make it easier to look for these, and shorter. We *know*
> this is a common path, given the size of the existing table.

I don't really care but one character shorter doesn't look like it
really helps.  Not really for grepping and not maintenance as we get a
bunch of trivial one line implementations.

Eric



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