linux-kernel - Re: [PATCH 9/9] fs: dlm: lockd: Convert int result to unsigned char type

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Message-ID: <20140723183332.GA21992@redhat.com>
Date:	Wed, 23 Jul 2014 13:33:32 -0500
From:	David Teigland <teigland@...hat.com>
To:	Jeff Layton <jlayton@...chiereds.net>
Cc:	Joe Perches <joe@...ches.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Al Viro <viro@...IV.linux.org.uk>,
	Christine Caulfield <ccaulfie@...hat.com>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Trond Myklebust <trond.myklebust@...marydata.com>,
	cluster-devel@...hat.com, linux-kernel@...r.kernel.org,
	linux-nfs@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 9/9] fs: dlm: lockd: Convert int result to unsigned char
 type

On Wed, Jul 23, 2014 at 02:11:39PM -0400, Jeff Layton wrote:
> On Sun, 20 Jul 2014 11:23:43 -0700
> Joe Perches <joe@...ches.com> wrote:
> 
> > op->info.rv is an s32, but it's only used as a u8.
> > 
> 
> I don't understand this patch. info.rv is s32 (and I assume that "rv"
> stands for "return value"). What I don't get is why you think it's just
> used as a u8. It seems to be used more like a bool than anything else,

Thank you, Jeff.

        /* info.rv from userspace is 1 for conflict, 0 for no-conflict,
           -ENOENT if there are no locks on the file */

        rv = op->info.rv;

> and I'm not sure that "type" is really a good description for it. Maybe
> it should be a "bool" and named "conflict", given the comments in
> dlm_posix_get ?

type is not a good name.

Sorry Joe, I'm not a fan of your patches.

Dave
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