linux-kernel - Re: [PATCH 20/20] filelock: split leases out of struct file

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Date: Wed, 17 Jan 2024 07:45:10 -0500
From: Jeff Layton <jlayton@...nel.org>
To: NeilBrown <neilb@...e.de>
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Subject: Re: [PATCH 20/20] filelock: split leases out of struct file_lock

On Wed, 2024-01-17 at 09:44 +1100, NeilBrown wrote:
> On Wed, 17 Jan 2024, Jeff Layton wrote:
> > Add a new struct file_lease and move the lease-specific fields from
> > struct file_lock to it. Convert the appropriate API calls to take
> > struct file_lease instead, and convert the callers to use them.
> 
> I think that splitting of struct lease_manager_operations out from
> lock_manager_operations should be mentioned here too.
> 

Will do.

> 
> >  
> > +struct file_lease {
> > +	struct file_lock_core fl_core;
> > +	struct fasync_struct *	fl_fasync; /* for lease break notifications */
> > +	/* for lease breaks: */
> > +	unsigned long fl_break_time;
> > +	unsigned long fl_downgrade_time;
> > +	const struct lease_manager_operations *fl_lmops;	/* Callbacks for lockmanagers */
> 
> comment should be "Callbacks for leasemanagers".  Or maybe 
> "lease managers". 
> 
> It is unfortunate that "lock" and "lease" both start with 'l' as we now
> have two quite different fields in different structures with the same
> name - fl_lmops.
> 

Hah, I had sort of considered that an advantage since I didn't need to
change as many call sites! Still, I get your point that having distinct
names is preferable.

I can change this to be distinct. I'll just need to come up with a
reasonable variable name (never my strong suit).

-- 
Jeff Layton <jlayton@...nel.org>