linux-kernel - Re: [PATCH v2 2/5] uapi: deprecate STATX

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Message-ID: <CAJfpegviiy=9fru3zButbqLnhshH85srH3qyZO2zf-_RPqSs=g@mail.gmail.com>
Date:   Fri, 19 Oct 2018 17:40:40 +0200
From:   Miklos Szeredi <miklos@...redi.hu>
To:     David Howells <dhowells@...hat.com>
Cc:     Miklos Szeredi <mszeredi@...hat.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Linux API <linux-api@...r.kernel.org>,
        Michael Kerrisk <mtk.manpages@...il.com>,
        Andreas Dilger <adilger@...ger.ca>,
        Florian Weimer <fw@...eb.enyo.de>,
        Amir Goldstein <amir73il@...il.com>
Subject: Re: [PATCH v2 2/5] uapi: deprecate STATX_ALL

On Fri, Oct 19, 2018 at 5:35 PM, David Howells <dhowells@...hat.com> wrote:
> Miklos Szeredi <mszeredi@...hat.com> wrote:
>
>> +/*
>> + * This is deprecated, and shall remain the same value in the future.  To avoid
>> + * confusion please use the equivalent (STATX_BASIC_STATS | STATX_BTIME)
>> + * instead.
>> + */
>> +#define STATX_ALL            0x00000fffU
>
> The comment is misleading.  STATX_ALL is *not* equivalent to
> STATX_BASIC_STATS | STATX_BTIME, even though it might be numerically the
> same.  You would need to update the comment when you add STATX_ATTRIBUTES
> to mention that also.

The definition of STATX_ALL is, and will remain, equivalent to
STATX_BASIC_STATS | STATX_BTIME.

What is misleading about this?

If you feel confused by this comment, then maybe I should just drop that part.

Thanks,
Miklos