Re: [PATCH] mm: Use fallthrough;

From: Sergey Senozhatsky
Date: Mon Mar 09 2020 - 02:21:23 EST


On (20/03/08 21:51), Joe Perches wrote:
> On Mon, 2020-03-09 at 13:15 +0900, Sergey Senozhatsky wrote:
> > On (20/03/07 19:54), Joe Perches wrote:
> > > On Sun, 2020-03-08 at 12:18 +0900, Sergey Senozhatsky wrote:
> > > > On (20/03/06 23:58), Joe Perches wrote:
> > > > [..]

[..]

> > > Consecutive case labels do not need an interleaving fallthrough;
> > >
> > > ie: ditto
> >
> > I see. Shall this be mentioned in the commit message, maybe?
>
> <shrug, maybe> I've no real opinion about that necessity.
>
> fallthrough commments are relatively rarely used as a
> separating element between case labels.
>
> It's by far most common to just have consecutive case labels
> without any other content.
>
> It's somewhere between 500:1 to 1000:1 in the kernel.

I thought that those labels were used by some static code analysis
tools, so that the removal of some labels raised questions. But I
don't think I have opinions otherwise.

-ss