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

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Date: Mon, 05 Feb 2024 07:06:00 -0500
From: Jeff Layton <jlayton@...nel.org>
To: Christian Brauner <brauner@...nel.org>
Cc: Steven Rostedt <rostedt@...dmis.org>, Masami Hiramatsu
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Subject: Re: [PATCH v3 04/47] filelock: add some new helper functions

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:

Reviewed-by: Jeff Layton <jlayton@...nel.org>