linux-kernel - RE: [RFC][PATCH] device mapper: Add builtin function dm_get

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Message-ID: <e57d2d23ec7845febb79ca4476c73fcb@huawei.com>
Date:   Thu, 2 Dec 2021 07:59:38 +0000
From:   Roberto Sassu <roberto.sassu@...wei.com>
To:     Christoph Hellwig <hch@...radead.org>
CC:     "deven.desai@...ux.microsoft.com" <deven.desai@...ux.microsoft.com>,
        "corbet@....net" <corbet@....net>,
        "axboe@...nel.dk" <axboe@...nel.dk>,
        "agk@...hat.com" <agk@...hat.com>,
        "snitzer@...hat.com" <snitzer@...hat.com>,
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        "serge@...lyn.com" <serge@...lyn.com>,
        "jannh@...gle.com" <jannh@...gle.com>,
        "dm-devel@...hat.com" <dm-devel@...hat.com>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
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        "tusharsu@...ux.microsoft.com" <tusharsu@...ux.microsoft.com>
Subject: RE: [RFC][PATCH] device mapper: Add builtin function dm_get_status()

> From: Christoph Hellwig [mailto:hch@...radead.org]
> Sent: Thursday, December 2, 2021 8:21 AM
> On Wed, Dec 01, 2021 at 05:37:08PM +0100, Roberto Sassu wrote:
> > Users of the device mapper driver might want to obtain a device status,
> > with status types defined in the status_type_t enumerator.
> 
> The patch looks really odd.  And without the corresponding user of your
> new functionality it is entirely unreviewable anyway.

Hi Christoph

ok, I will send it together with a patch for a not yet accepted
software, Integrity Policy Enforcement (IPE), that will be
the primary user of the introduced functionality.

Regarding the patch itself, could you please provide a more
detailed explanation?

Thanks

Roberto

HUAWEI TECHNOLOGIES Duesseldorf GmbH, HRB 56063
Managing Director: Li Peng, Zhong Ronghua