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From:   Andreas Dilger <adilger@dilger.ca>
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Subject: Re: [PATCH 2/3] uapi: get rid of STATX_ALL
Date:   Thu, 18 Oct 2018 19:45:42 -0600
In-Reply-To: <875zxzxuo9.fsf@mid.deneb.enyo.de>
Cc:     Miklos Szeredi <mszeredi@redhat.com>,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-api@vger.kernel.org, David Howells <dhowells@redhat.com>,
        Michael Kerrisk <mtk.manpages@gmail.com>,
        Amir Goldstein <amir73il@gmail.com>
To:     Florian Weimer <fw@deneb.enyo.de>
References: <20181018131125.6303-1-mszeredi@redhat.com>
 <20181018131125.6303-2-mszeredi@redhat.com>
 <875zxzxuo9.fsf@mid.deneb.enyo.de>
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> On Oct 18, 2018, at 7:15 AM, Florian Weimer <fw@deneb.enyo.de> wrote:
>=20
> * Miklos Szeredi:
>=20
>> #define STATX__RESERVED		0x80000000U	/* Reserved for =
future struct statx expansion */
>=20
> What about this?  Isn't it similar to STATX_ALL in the sense that we
> don't know yet what it will mean?

No, this means that this last bit will be used for increasing the size =
of the
stx_mask field at some point in the future.  IMHO, this is present as a =
reminder
to any developer who is adding fields in the future not to use the last =
flag.

Cheers, Andreas


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