From: Christoph Hellwig <hch@infradead.org>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
adilger@dilger.ca, hch@infradead.org, martin.petersen@oracle.com
Subject: Re: [PATCH 04/11] fs: add support for allowing applications to pass in write life time hints
Date: Sun, 18 Jun 2017 23:27:06 -0700 [thread overview]
Message-ID: <20170619062706.GC2311@infradead.org> (raw)
In-Reply-To: <1497729594-4707-5-git-send-email-axboe@kernel.dk>
On Sat, Jun 17, 2017 at 01:59:47PM -0600, Jens Axboe wrote:
> Add four flags for the pwritev2(2) system call, allowing an application
> to give the kernel a hint about what on-media life times can be
> expected from a given write.
>
> The intent is for these values to be relative to each other, no
> absolute meaning should be attached to these flag names.
>
> Set aside 3 bits in the iocb flags structure to carry this information
> over from the pwritev2 RWF_WRITE_LIFE_* flags.
What is the strong use case for the per-I/O flags? I'd much rather
stick to fcntl only for now if we can.
next prev parent reply other threads:[~2017-06-19 6:27 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-17 19:59 [PATCHSET v7] Add support for write life time hints Jens Axboe
2017-06-17 19:59 ` [PATCH 01/11] fs: add support for an inode to carry write hint related data Jens Axboe
2017-06-19 6:26 ` Christoph Hellwig
2017-06-19 14:55 ` Jens Axboe
2017-06-17 19:59 ` [PATCH 02/11] block: add support for write hints in a bio Jens Axboe
2017-06-17 19:59 ` [PATCH 03/11] blk-mq: expose stream write hints through debugfs Jens Axboe
2017-06-17 19:59 ` [PATCH 04/11] fs: add support for allowing applications to pass in write life time hints Jens Axboe
2017-06-19 6:27 ` Christoph Hellwig [this message]
2017-06-19 14:56 ` Jens Axboe
2017-06-19 16:02 ` Jens Axboe
2017-06-19 18:58 ` Christoph Hellwig
2017-06-19 19:00 ` Jens Axboe
2017-06-19 19:10 ` Jens Axboe
2017-06-19 20:33 ` Jens Axboe
2017-06-20 2:06 ` Jens Axboe
2017-06-20 8:57 ` Christoph Hellwig
2017-06-20 12:43 ` Jens Axboe
2017-06-20 12:43 ` Christoph Hellwig
2017-06-20 12:45 ` Jens Axboe
2017-06-20 12:47 ` Christoph Hellwig
2017-06-20 12:51 ` Jens Axboe
2017-06-20 12:56 ` Christoph Hellwig
2017-06-20 13:00 ` Jens Axboe
2017-06-17 19:59 ` [PATCH 05/11] fs: add fcntl() interface for setting/getting " Jens Axboe
2017-06-19 6:28 ` Christoph Hellwig
2017-06-19 14:57 ` Jens Axboe
2017-06-17 19:59 ` [PATCH 06/11] fs: add O_DIRECT support for sending down " Jens Axboe
2017-06-19 6:28 ` Christoph Hellwig
2017-06-19 14:57 ` Jens Axboe
2017-06-17 19:59 ` [PATCH 07/11] fs: add support for buffered writeback to pass down write hints Jens Axboe
2017-06-17 19:59 ` [PATCH 08/11] ext4: add support for passing in write hints for buffered writes Jens Axboe
2017-06-17 19:59 ` [PATCH 09/11] xfs: " Jens Axboe
2017-06-17 19:59 ` [PATCH 10/11] btrfs: " Jens Axboe
2017-06-17 19:59 ` [PATCH 11/11] nvme: add support for streams and directives Jens Axboe
2017-06-19 6:35 ` Christoph Hellwig
2017-06-19 15:04 ` Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2017-06-16 17:24 [PATCHSET v6] Add support for write life time hints Jens Axboe
2017-06-16 17:24 ` [PATCH 04/11] fs: add support for allowing applications to pass in " Jens Axboe
2017-06-15 3:45 [PATCHSET v4] Add support for " Jens Axboe
2017-06-15 3:45 ` [PATCH 04/11] fs: add support for allowing applications to pass in " Jens Axboe
2017-06-15 4:15 ` Darrick J. Wong
2017-06-15 4:33 ` Jens Axboe
2017-06-15 8:19 ` Christoph Hellwig
2017-06-15 14:21 ` Jens Axboe
2017-06-15 15:23 ` Jens Axboe
2017-06-16 7:30 ` Christoph Hellwig
2017-06-16 14:35 ` Jens Axboe
2017-06-16 7:33 ` Christoph Hellwig
2017-06-16 14:35 ` Jens Axboe
2017-06-16 14:53 ` Jens Axboe
2017-06-16 15:52 ` Christoph Hellwig
2017-06-16 15:59 ` Jens Axboe
2017-06-16 16:14 ` Jens Axboe
2017-06-16 18:00 ` Christoph Hellwig
2017-06-16 18:02 ` Christoph Hellwig
2017-06-16 19:35 ` Jens Axboe
2017-06-15 11:24 ` Al Viro
2017-06-14 19:05 [PATCHSET v3] Add support for " Jens Axboe
2017-06-14 19:05 ` [PATCH 04/11] fs: add support for allowing applications to pass in " Jens Axboe
2017-06-14 20:26 ` Christoph Hellwig
2017-06-14 20:37 ` Jens Axboe
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