linux-kernel - Re: [PATCH 0/4] locks: flock and lease related bugfixes, and remove i

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Date:	Tue, 17 Feb 2015 12:20:20 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Jeff Layton <jeff.layton@...marydata.com>
Cc:	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Christoph Hellwig <hch@....de>,
	Dave Chinner <david@...morbit.com>,
	Sasha Levin <sasha.levin@...cle.com>
Subject: Re: [PATCH 0/4] locks: flock and lease related bugfixes, and remove
 i_flctx counters

On Tue, Feb 17, 2015 at 11:55 AM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> I do believe that we should add a "list_count()" function, so that we could write
>
>    *flock_count = list_count(&ctx->flc_flock);
>
> instead of that horribly ugly
>
>     list_for_each_entry(lock, &ctx->flc_flock, fl_list)
>          ++(*flock_count);
>
> thing. But that's a separate cleanup.

The helper function would possibly be something like this.

Untested. It may mix-count, or it might do unspeakable acts on your
pets. No guarantees.

                        Linus

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