From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
adilger@dilger.ca, martin.petersen@oracle.com,
linux-nvme@lists.infradead.org
Subject: Re: [PATCH 9/9] nvme: add support for streams and directives
Date: Mon, 26 Jun 2017 13:52:02 -0400 [thread overview]
Message-ID: <yq17ezy4oxp.fsf@oracle.com> (raw)
In-Reply-To: <20170626095907.GG14057@infradead.org> (Christoph Hellwig's message of "Mon, 26 Jun 2017 02:59:07 -0700")
Christoph,
> - can we keep a module option to disable streams, or in fact for
> now maybe to explicitly enable it? I expect this to be interesting
> at least for the first devices that implement it. Also given that
> it needs to be explicitly enabled I would expect some overhead of
> just enabling it when never used
Yeah, based on my experiments we'll need to drive this as an opt-in
feature for now. Short term the module option is OK. Once more devices
start materializing we probably need a white/blacklist/quirk scheme.
--
Martin K. Petersen Oracle Linux Engineering
WARNING: multiple messages have this Message-ID (diff)
From: martin.petersen@oracle.com (Martin K. Petersen)
Subject: [PATCH 9/9] nvme: add support for streams and directives
Date: Mon, 26 Jun 2017 13:52:02 -0400 [thread overview]
Message-ID: <yq17ezy4oxp.fsf@oracle.com> (raw)
In-Reply-To: <20170626095907.GG14057@infradead.org> (Christoph Hellwig's message of "Mon, 26 Jun 2017 02:59:07 -0700")
Christoph,
> - can we keep a module option to disable streams, or in fact for
> now maybe to explicitly enable it? I expect this to be interesting
> at least for the first devices that implement it. Also given that
> it needs to be explicitly enabled I would expect some overhead of
> just enabling it when never used
Yeah, based on my experiments we'll need to drive this as an opt-in
feature for now. Short term the module option is OK. Once more devices
start materializing we probably need a white/blacklist/quirk scheme.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2017-06-26 17:52 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-21 0:21 [PATCHSET v9] Add support for write life time hints Jens Axboe
2017-06-21 0:21 ` Jens Axboe
2017-06-21 0:21 ` [PATCH 1/9] fs: add fcntl() interface for setting/getting " Jens Axboe
2017-06-21 0:21 ` Jens Axboe
2017-06-26 9:51 ` Christoph Hellwig
2017-06-26 9:51 ` Christoph Hellwig
2017-06-26 9:51 ` Christoph Hellwig
2017-06-26 13:55 ` Jens Axboe
2017-06-26 13:55 ` Jens Axboe
2017-06-26 13:55 ` Jens Axboe
2017-06-26 16:09 ` Darrick J. Wong
2017-06-26 16:09 ` Darrick J. Wong
2017-06-26 16:09 ` Darrick J. Wong
2017-06-26 16:29 ` Jens Axboe
2017-06-26 16:29 ` Jens Axboe
2017-06-26 16:29 ` Jens Axboe
2017-06-21 0:21 ` [PATCH 2/9] block: add support for write hints in a bio Jens Axboe
2017-06-21 0:21 ` Jens Axboe
2017-06-26 9:52 ` Christoph Hellwig
2017-06-26 9:52 ` Christoph Hellwig
2017-06-21 0:22 ` [PATCH 3/9] blk-mq: expose stream write hints through debugfs Jens Axboe
2017-06-21 0:22 ` Jens Axboe
2017-06-26 9:52 ` Christoph Hellwig
2017-06-26 9:52 ` Christoph Hellwig
2017-06-21 0:22 ` [PATCH 4/9] fs: add O_DIRECT support for sending down write life time hints Jens Axboe
2017-06-21 0:22 ` Jens Axboe
2017-06-26 9:55 ` Christoph Hellwig
2017-06-26 9:55 ` Christoph Hellwig
2017-06-26 14:12 ` Jens Axboe
2017-06-26 14:12 ` Jens Axboe
2017-06-21 0:22 ` [PATCH 5/9] fs: add support for buffered writeback to pass down write hints Jens Axboe
2017-06-21 0:22 ` Jens Axboe
2017-06-21 0:22 ` [PATCH 6/9] ext4: add support for passing in write hints for buffered writes Jens Axboe
2017-06-21 0:22 ` Jens Axboe
2017-06-21 0:22 ` [PATCH 7/9] xfs: " Jens Axboe
2017-06-21 0:22 ` Jens Axboe
2017-06-21 1:35 ` Darrick J. Wong
2017-06-21 1:35 ` Darrick J. Wong
2017-06-21 1:46 ` Jens Axboe
2017-06-21 1:46 ` Jens Axboe
2017-06-26 9:56 ` Christoph Hellwig
2017-06-26 9:56 ` Christoph Hellwig
2017-06-26 14:16 ` Jens Axboe
2017-06-26 14:16 ` Jens Axboe
2017-06-21 0:22 ` [PATCH 8/9] btrfs: " Jens Axboe
2017-06-21 0:22 ` Jens Axboe
2017-06-21 0:22 ` [PATCH 9/9] nvme: add support for streams and directives Jens Axboe
2017-06-21 0:22 ` Jens Axboe
2017-06-26 9:59 ` Christoph Hellwig
2017-06-26 9:59 ` Christoph Hellwig
2017-06-26 13:56 ` Jens Axboe
2017-06-26 13:56 ` Jens Axboe
2017-06-26 19:36 ` Andreas Dilger
2017-06-26 19:36 ` Andreas Dilger
2017-06-26 19:39 ` Jens Axboe
2017-06-26 19:39 ` Jens Axboe
2017-06-27 14:11 ` Christoph Hellwig
2017-06-27 14:11 ` Christoph Hellwig
2017-06-27 14:16 ` Jens Axboe
2017-06-27 14:16 ` Jens Axboe
2017-06-27 14:44 ` Christoph Hellwig
2017-06-27 14:44 ` Christoph Hellwig
2017-06-27 14:46 ` Jens Axboe
2017-06-27 14:46 ` Jens Axboe
2017-06-27 14:56 ` Jens Axboe
2017-06-27 14:56 ` Jens Axboe
2017-06-26 17:52 ` Martin K. Petersen [this message]
2017-06-26 17:52 ` Martin K. Petersen
2017-06-26 18:00 ` Jens Axboe
2017-06-26 18:00 ` Jens Axboe
2017-06-21 1:30 ` [PATCHSET v9] Add support for write life time hints Martin K. Petersen
2017-06-21 1:30 ` Martin K. Petersen
2017-06-21 1:45 ` Jens Axboe
2017-06-21 1:45 ` Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2017-06-26 15:37 [PATCHSET v10] " Jens Axboe
2017-06-26 15:38 ` [PATCH 9/9] nvme: add support for streams and directives Jens Axboe
2017-06-19 17:04 [PATCHSET v8] Add support for write life time hints Jens Axboe
2017-06-19 17:05 ` [PATCH 9/9] nvme: add support for streams and directives Jens Axboe
2017-06-19 17:05 ` Jens Axboe
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