From: 'Christoph Hellwig' <hch@infradead.org>
To: kanchan <joshi.k@samsung.com>
Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org,
linux-ext4@vger.kernel.org, prakash.v@samsung.com,
anshul@samsung.com,
"Martin K. Petersen" <martin.petersen@oracle.com>
Subject: Re: [PATCH v5 0/7] Extend write-hint framework, and add write-hint for Ext4 journal
Date: Mon, 20 May 2019 07:27:19 -0700 [thread overview]
Message-ID: <20190520142719.GA15705@infradead.org> (raw)
In-Reply-To: <00fb01d50c71$dd358e50$97a0aaf0$@samsung.com>
On Fri, May 17, 2019 at 11:01:55AM +0530, kanchan wrote:
> Sorry but can you please elaborate the issue? I do not get what is being
> statically allocated which was globally available earlier.
> If you are referring to nvme driver, available streams at subsystem level
> are being reflected for all namespaces. This is same as earlier.
> There is no attempt to explicitly allocate (using dir-receive) or reserve
> streams for any namespace.
> Streams will continue to get allocated/released implicitly as and when
> writes (with stream id) arrive.
We have made a concious decision that we do not want to expose streams
as an awkward not fish not flesh interface, but instead life time hints.
I see no reason to change from and burden the whole streams complexity
on other in-kernel callers.
next prev parent reply other threads:[~2019-05-20 14:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20190425112347epcas2p1f7be48b8f0d2203252b8c9dd510c1b61@epcas2p1.samsung.com>
2019-04-25 11:19 ` [PATCH v5 0/7] Extend write-hint framework, and add write-hint for Ext4 journal Kanchan Joshi
[not found] ` <CGME20190425112351epcas2p209fdb12872bdcdcb11afd7b6e196b85e@epcas2p2.samsung.com>
2019-04-25 11:19 ` [PATCH v5 1/7] fs: introduce write-hint start point for in-kernel hints Kanchan Joshi
[not found] ` <CGME20190425112355epcas2p11e197c8fc33698feb7150d1f4148407e@epcas2p1.samsung.com>
2019-04-25 11:19 ` [PATCH v5 2/7] block: increase stream count for in-kernel use Kanchan Joshi
[not found] ` <CGME20190425112358epcas1p13da4f182241366c309cb2c76df3fb048@epcas1p1.samsung.com>
2019-04-25 11:19 ` [PATCH v5 3/7] block: introduce API to register stream information with block-layer Kanchan Joshi
[not found] ` <CGME20190425112400epcas1p26e7634f95a185a83c31470006d291161@epcas1p2.samsung.com>
2019-04-25 11:19 ` [PATCH v5 4/7] block: introduce write-hint to stream-id conversion Kanchan Joshi
[not found] ` <CGME20190425112403epcas1p13006198cda351a08c8403c2b85c9f102@epcas1p1.samsung.com>
2019-04-25 11:20 ` [PATCH v5 5/7] nvme: register stream info with block layer Kanchan Joshi
[not found] ` <CGME20190425112406epcas1p4a54b2c5d15ae42a53ff3c206cf7a7892@epcas1p4.samsung.com>
2019-04-25 11:20 ` [PATCH v5 6/7] fs: introduce APIs to enable passing write-hint with buffer-head Kanchan Joshi
[not found] ` <CGME20190425112408epcas2p2ddba9fdf175645dd2647da191eac5e1c@epcas2p2.samsung.com>
2019-04-25 11:20 ` [PATCH v5 7/7] fs/ext4,jbd2: add support for sending write-hint with journal Kanchan Joshi
2019-05-10 5:31 ` [PATCH v5 0/7] Extend write-hint framework, and add write-hint for Ext4 journal kanchan
2019-05-10 17:02 ` Christoph Hellwig
2019-05-17 5:31 ` kanchan
2019-05-20 14:27 ` 'Christoph Hellwig' [this message]
2019-05-21 8:25 ` Jan Kara
2019-05-21 8:28 ` 'Christoph Hellwig'
2019-05-22 10:25 ` Jan Kara
2019-06-26 12:47 ` kanchan
2019-06-28 7:25 ` 'Christoph Hellwig'
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