linux-kernel - Re: [PATCH v3 04/47] filelock: add some new helper functions

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Message-ID: <20240205-fragil-begraben-4b78fd1b5981@brauner>
Date: Mon, 5 Feb 2024 13:19:57 +0100
From: Christian Brauner <brauner@...nel.org>
To: Jeff Layton <jlayton@...nel.org>
Cc: Steven Rostedt <rostedt@...dmis.org>, 
	Masami Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, 
	Chuck Lever <chuck.lever@...cle.com>, Alexander Viro <viro@...iv.linux.org.uk>, 
	Jan Kara <jack@...e.cz>, Eric Van Hensbergen <ericvh@...nel.org>, 
	Latchesar Ionkov <lucho@...kov.net>, Dominique Martinet <asmadeus@...ewreck.org>, 
	Christian Schoenebeck <linux_oss@...debyte.com>, David Howells <dhowells@...hat.com>, 
	Marc Dionne <marc.dionne@...istor.com>, Xiubo Li <xiubli@...hat.com>, Ilya Dryomov <idryomov@...il.com>, 
	Alexander Aring <aahringo@...hat.com>, David Teigland <teigland@...hat.com>, 
	Andreas Gruenbacher <agruenba@...hat.com>, Neil Brown <neilb@...e.de>, Olga Kornievskaia <kolga@...app.com>, 
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	linux-fsdevel@...r.kernel.org, v9fs@...ts.linux.dev, linux-afs@...ts.infradead.org, 
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Subject: Re: [PATCH v3 04/47] filelock: add some new helper functions

On Mon, Feb 05, 2024 at 07:06:00AM -0500, Jeff Layton wrote:
> On Mon, 2024-02-05 at 12:57 +0100, Christian Brauner wrote:
> > On Mon, Feb 05, 2024 at 06:55:44AM -0500, Jeff Layton wrote:
> > > On Mon, 2024-02-05 at 12:36 +0100, Christian Brauner wrote:
> > > > > diff --git a/include/linux/filelock.h b/include/linux/filelock.h
> > > > > index 085ff6ba0653..a814664b1053 100644
> > > > > --- a/include/linux/filelock.h
> > > > > +++ b/include/linux/filelock.h
> > > > > @@ -147,6 +147,29 @@ int fcntl_setlk64(unsigned int, struct file *, unsigned int,
> > > > >  int fcntl_setlease(unsigned int fd, struct file *filp, int arg);
> > > > >  int fcntl_getlease(struct file *filp);
> > > > >  
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > +static inline bool lock_is_unlock(struct file_lock *fl)
> > > > > +{
> > > > > +	return fl->fl_type == F_UNLCK;
> > > > > +}
> > > > > +
> > > > > +static inline bool lock_is_read(struct file_lock *fl)
> > > > > +{
> > > > > +	return fl->fl_type == F_RDLCK;
> > > > > +}
> > > > > +
> > > > > +static inline bool lock_is_write(struct file_lock *fl)
> > > > > +{
> > > > > +	return fl->fl_type == F_WRLCK;
> > > > > +}
> > > > > +
> > > > > +static inline void locks_wake_up(struct file_lock *fl)
> > > > > +{
> > > > > +	wake_up(&fl->fl_wait);
> > > > > +}
> > > > > +
> > > > > +/* for walking lists of file_locks linked by fl_list */
> > > > > +#define for_each_file_lock(_fl, _head)	list_for_each_entry(_fl, _head, fl_list)
> > > > > +
> > > > 
> > > > This causes a build warning for fs/ceph/ and fs/afs when
> > > > !CONFIG_FILE_LOCKING. I'm about to fold the following diff into this
> > > > patch. The diff looks a bit wonky but essentially I've moved
> > > > lock_is_unlock(), lock_is_{read,write}(), locks_wake_up() and
> > > > for_each_file_lock() out of the ifdef CONFIG_FILE_LOCKING:
> > > > 
> > > 
> > > I sent a patch for this problem yesterday. Did you not get it?
> > 
> > Whoops, probably missed it on the trip back from fosdem.
> > I'll double check now.
> 
> No worries. If you choose to go with your version, you can add:

No, I took yours. :)