From: Christoph Hellwig <hch@lst.de>
To: Chaitanya Kulkarni <Chaitanya.Kulkarni@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>,
"sagi@grimberg.me" <sagi@grimberg.me>,
Damien Le Moal <Damien.LeMoal@wdc.com>
Subject: Re: [PATCH V9 5/9] nvmet: add bio get helper for different backends
Date: Mon, 18 Jan 2021 19:28:03 +0100 [thread overview]
Message-ID: <20210118182803.GE11082@lst.de> (raw)
In-Reply-To: <BYAPR04MB4965361DC74566BD26E3DC7B86A90@BYAPR04MB4965.namprd04.prod.outlook.com>
On Wed, Jan 13, 2021 at 05:03:05AM +0000, Chaitanya Kulkarni wrote:
> On 1/11/21 23:33, Christoph Hellwig wrote:
> > I'm not a huge fan of this helper, especially as it sets an end_io
> > callback only for the allocated case, which is a weird calling
> > convention.
> >
>
> The patch has a right documentation and that end_io is needed
> for passthru case. To get rid of the weirdness I can remove
> passthru case and make itend_io assign to inline and non-inline bio
> to make it non-weired.
>
> Since this eliminates exactly identical lines of the code in atleast two
> backend which we should try to use the helper in non-wried way.
I really do not like helper that just eliminate "duplicate lines" vs
encapsulating logic that makes sense one its own.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Chaitanya Kulkarni <Chaitanya.Kulkarni@wdc.com>
Cc: "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
Damien Le Moal <Damien.LeMoal@wdc.com>,
Christoph Hellwig <hch@lst.de>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>,
"sagi@grimberg.me" <sagi@grimberg.me>
Subject: Re: [PATCH V9 5/9] nvmet: add bio get helper for different backends
Date: Mon, 18 Jan 2021 19:28:03 +0100 [thread overview]
Message-ID: <20210118182803.GE11082@lst.de> (raw)
In-Reply-To: <BYAPR04MB4965361DC74566BD26E3DC7B86A90@BYAPR04MB4965.namprd04.prod.outlook.com>
On Wed, Jan 13, 2021 at 05:03:05AM +0000, Chaitanya Kulkarni wrote:
> On 1/11/21 23:33, Christoph Hellwig wrote:
> > I'm not a huge fan of this helper, especially as it sets an end_io
> > callback only for the allocated case, which is a weird calling
> > convention.
> >
>
> The patch has a right documentation and that end_io is needed
> for passthru case. To get rid of the weirdness I can remove
> passthru case and make itend_io assign to inline and non-inline bio
> to make it non-weired.
>
> Since this eliminates exactly identical lines of the code in atleast two
> backend which we should try to use the helper in non-wried way.
I really do not like helper that just eliminate "duplicate lines" vs
encapsulating logic that makes sense one its own.
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next prev parent reply other threads:[~2021-01-18 18:29 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-12 4:26 [PATCH V9 0/9] nvmet: add ZBD backend support Chaitanya Kulkarni
2021-01-12 4:26 ` Chaitanya Kulkarni
2021-01-12 4:26 ` [PATCH V9 1/9] block: export bio_add_hw_pages() Chaitanya Kulkarni
2021-01-12 4:26 ` Chaitanya Kulkarni
2021-01-12 5:40 ` Damien Le Moal
2021-01-12 5:40 ` Damien Le Moal
2021-01-12 7:24 ` Christoph Hellwig
2021-01-12 7:24 ` Christoph Hellwig
2021-01-13 1:20 ` Chaitanya Kulkarni
2021-01-13 1:20 ` Chaitanya Kulkarni
2021-01-12 4:26 ` [PATCH V9 2/9] nvmet: add lba to sect conversion helpers Chaitanya Kulkarni
2021-01-12 4:26 ` Chaitanya Kulkarni
2021-01-12 5:08 ` Damien Le Moal
2021-01-12 5:08 ` Damien Le Moal
2021-01-18 18:19 ` Christoph Hellwig
2021-01-18 18:19 ` Christoph Hellwig
2021-01-12 4:26 ` [PATCH V9 3/9] nvmet: add NVM command set identifier support Chaitanya Kulkarni
2021-01-12 4:26 ` Chaitanya Kulkarni
2021-01-12 7:27 ` Christoph Hellwig
2021-01-12 7:27 ` Christoph Hellwig
2021-01-13 4:16 ` Chaitanya Kulkarni
2021-01-13 4:16 ` Chaitanya Kulkarni
2021-01-18 18:21 ` Christoph Hellwig
2021-01-18 18:21 ` Christoph Hellwig
2021-01-12 4:26 ` [PATCH V9 4/9] nvmet: add ZBD over ZNS backend support Chaitanya Kulkarni
2021-01-12 4:26 ` Chaitanya Kulkarni
2021-01-12 5:32 ` Damien Le Moal
2021-01-12 5:32 ` Damien Le Moal
2021-01-12 6:11 ` Chaitanya Kulkarni
2021-01-12 6:11 ` Chaitanya Kulkarni
2021-01-12 6:31 ` Damien Le Moal
2021-01-12 6:31 ` Damien Le Moal
2021-01-12 7:48 ` Christoph Hellwig
2021-01-12 7:48 ` Christoph Hellwig
2021-01-12 7:52 ` Damien Le Moal
2021-01-12 7:52 ` Damien Le Moal
2021-01-18 18:25 ` Christoph Hellwig
2021-01-18 18:25 ` Christoph Hellwig
2021-01-19 0:02 ` Damien Le Moal
2021-01-19 0:02 ` Damien Le Moal
2021-01-19 4:28 ` Damien Le Moal
2021-01-19 4:28 ` Damien Le Moal
2021-01-19 6:15 ` hch
2021-01-19 6:15 ` hch
2021-01-13 4:57 ` Chaitanya Kulkarni
2021-01-13 4:57 ` Chaitanya Kulkarni
2021-01-18 18:27 ` Christoph Hellwig
2021-01-18 18:27 ` Christoph Hellwig
2021-01-12 4:26 ` [PATCH V9 5/9] nvmet: add bio get helper for different backends Chaitanya Kulkarni
2021-01-12 4:26 ` Chaitanya Kulkarni
2021-01-12 5:37 ` Damien Le Moal
2021-01-12 5:37 ` Damien Le Moal
2021-01-12 5:55 ` Chaitanya Kulkarni
2021-01-12 5:55 ` Chaitanya Kulkarni
2021-01-12 7:33 ` Christoph Hellwig
2021-01-12 7:33 ` Christoph Hellwig
2021-01-13 5:03 ` Chaitanya Kulkarni
2021-01-13 5:03 ` Chaitanya Kulkarni
2021-01-18 18:28 ` Christoph Hellwig [this message]
2021-01-18 18:28 ` Christoph Hellwig
2021-01-19 4:57 ` Chaitanya Kulkarni
2021-01-19 4:57 ` Chaitanya Kulkarni
2021-01-12 4:26 ` [PATCH V9 6/9] nvmet: add bio init " Chaitanya Kulkarni
2021-01-12 4:26 ` Chaitanya Kulkarni
2021-01-12 5:40 ` Damien Le Moal
2021-01-12 5:40 ` Damien Le Moal
2021-01-12 5:57 ` Chaitanya Kulkarni
2021-01-12 5:57 ` Chaitanya Kulkarni
2021-01-12 6:27 ` Damien Le Moal
2021-01-12 6:27 ` Damien Le Moal
2021-01-12 7:33 ` Christoph Hellwig
2021-01-12 7:33 ` Christoph Hellwig
2021-01-13 5:04 ` Chaitanya Kulkarni
2021-01-13 5:04 ` Chaitanya Kulkarni
2021-01-18 18:33 ` Christoph Hellwig
2021-01-18 18:33 ` Christoph Hellwig
2021-01-12 4:26 ` [PATCH V9 7/9] nvmet: add bio put " Chaitanya Kulkarni
2021-01-12 4:26 ` Chaitanya Kulkarni
2021-01-12 4:26 ` [PATCH V9 8/9] nvmet: add common I/O length check helper Chaitanya Kulkarni
2021-01-12 4:26 ` Chaitanya Kulkarni
2021-01-12 7:35 ` Christoph Hellwig
2021-01-12 7:35 ` Christoph Hellwig
2021-01-13 5:07 ` Chaitanya Kulkarni
2021-01-13 5:07 ` Chaitanya Kulkarni
2021-01-18 18:34 ` Christoph Hellwig
2021-01-18 18:34 ` Christoph Hellwig
2021-01-12 4:26 ` [PATCH V9 9/9] nvmet: call nvmet_bio_done() for zone append Chaitanya Kulkarni
2021-01-12 4:26 ` Chaitanya Kulkarni
2021-01-12 7:36 ` Christoph Hellwig
2021-01-12 7:36 ` Christoph Hellwig
2021-01-13 5:13 ` Chaitanya Kulkarni
2021-01-13 5:13 ` Chaitanya Kulkarni
2021-01-12 6:12 ` [PATCH V9 0/9] nvmet: add ZBD backend support Chaitanya Kulkarni
2021-01-12 6:12 ` Chaitanya Kulkarni
2021-02-10 22:42 ` Chaitanya Kulkarni
2021-02-10 22:42 ` Chaitanya Kulkarni
2021-02-11 7:20 ` hch
2021-02-11 7:20 ` hch
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