linux-kernel - Re: [PATCH] filelock: move file locking definitions to separate header file

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Message-ID: <Y3xHQwM3UiD/SK0K@casper.infradead.org>
Date:   Tue, 22 Nov 2022 03:51:31 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Jeff Layton <jlayton@...nel.org>
Cc:     Eric Van Hensbergen <ericvh@...il.com>,
        Latchesar Ionkov <lucho@...kov.net>,
        Dominique Martinet <asmadeus@...ewreck.org>,
        Christian Schoenebeck <linux_oss@...debyte.com>,
        David Howells <dhowells@...hat.com>,
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Subject: Re: [PATCH] filelock: move file locking definitions to separate
 header file

On Sun, Nov 20, 2022 at 03:59:57PM -0500, Jeff Layton wrote:
> Move the file locking definitions to a new header file, and add the
> appropriate #include directives to the source files that need them. By
> doing this we trim down fs.h a bit and limit the amount of rebuilding
> that has to be done when we make changes to the file locking APIs.

I'm in favour of this in general, but I think there's a few implicit
includes.  Can you create a test.c that only #include
<linnux/filelock.h> and see if there's anything missing?

> +	wait_queue_head_t fl_wait;
> +	struct file *fl_file;

These two seem undefined at this point.

> +	struct fasync_struct *	fl_fasync; /* for lease break notifications */

Likewise.