From: Bart Van Assche <bvanassche@acm.org>
To: Niklas Cassel <Niklas.Cassel@wdc.com>,
Damien Le Moal <dlemoal@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
Christoph Hellwig <hch@lst.de>, Avri Altman <Avri.Altman@wdc.com>,
Bean Huo <huobean@gmail.com>,
Daejun Park <daejun7.park@samsung.com>,
Hannes Reinecke <hare@suse.de>
Subject: Re: [PATCH v2 03/15] block: Support data lifetime in the I/O priority bitfield
Date: Fri, 13 Oct 2023 14:20:23 -0700 [thread overview]
Message-ID: <2f092612-eed0-4c4b-940f-48793b97b068@acm.org> (raw)
In-Reply-To: <ZSkO8J9pD+IVaGPf@x1-carbon>
On 10/13/23 02:33, Niklas Cassel wrote:
> In commit c75e707fe1aa ("block: remove the per-bio/request write hint")
> this line from fs/direct-io.c was removed:
> - bio->bi_write_hint = dio->iocb->ki_hint;
>
> I'm not sure why this series does not readd a similar line to set the
> lifetime (using bio_set_data_lifetime()) also for fs/direct-io.c.
It depends on how we want the user to specify the data lifetime for
direct I/O. This assignment is not modified by this patch series and
copies the data lifetime information from the ioprio bitfield from user
space into the bio:
bio->bi_ioprio = dio->iocb->ki_ioprio;
> I still don't understand what happens if one uses io_uring to write
> to a file on a f2fs filesystem using buffered-io, with both
> inode->i_write_hint set using fcntl F_SET_RW_HINT, and bits belonging
> to life time hints set in the io_uring SQE (sqe->ioprio).
Is the documentation of the whint_mode mount option in patch 5/15 of this
series sufficient to answer the above question?
Thanks,
Bart.
next prev parent reply other threads:[~2023-10-13 21:20 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-05 19:40 [PATCH v2 00/15] Pass data temperature information to UFS devices Bart Van Assche
2023-10-05 19:40 ` [PATCH v2 01/15] block: Make bio_set_ioprio() modify fewer bio->bi_ioprio bits Bart Van Assche
2023-10-06 6:28 ` Kanchan Joshi
2023-10-06 18:20 ` Bart Van Assche
2023-10-10 5:22 ` Kanchan Joshi
2023-10-11 16:52 ` Bart Van Assche
2023-10-12 8:49 ` Kanchan Joshi
2023-10-12 14:03 ` Niklas Cassel
2023-10-12 17:42 ` Bart Van Assche
2023-10-05 19:40 ` [PATCH v2 02/15] blk-ioprio: Modify " Bart Van Assche
2023-10-06 6:36 ` Kanchan Joshi
2023-10-06 18:25 ` Bart Van Assche
2023-10-05 19:40 ` [PATCH v2 03/15] block: Support data lifetime in the I/O priority bitfield Bart Van Assche
2023-10-06 6:42 ` Kanchan Joshi
2023-10-06 8:19 ` Damien Le Moal
2023-10-06 9:53 ` Niklas Cassel
2023-10-06 18:07 ` Bart Van Assche
2023-10-11 20:51 ` Bart Van Assche
2023-10-12 1:02 ` Damien Le Moal
2023-10-12 18:00 ` Bart Van Assche
2023-10-13 1:08 ` Damien Le Moal
2023-10-13 9:33 ` Niklas Cassel
2023-10-13 21:20 ` Bart Van Assche [this message]
2023-10-16 9:20 ` Niklas Cassel
2023-10-16 16:36 ` Bart Van Assche
2023-10-13 20:18 ` Bart Van Assche
2023-10-15 22:22 ` Damien Le Moal
2023-10-16 16:31 ` Bart Van Assche
2023-10-16 6:17 ` Christoph Hellwig
2023-10-16 16:32 ` Bart Van Assche
2023-10-05 19:40 ` [PATCH v2 04/15] fs: Restore write hint support Bart Van Assche
2023-10-10 5:42 ` Kanchan Joshi
2023-10-11 16:56 ` Bart Van Assche
2023-10-16 6:20 ` Christoph Hellwig
2023-10-05 19:40 ` [PATCH v2 05/15] fs/f2fs: Restore the whint_mode mount option Bart Van Assche
2023-10-05 19:40 ` [PATCH v2 06/15] scsi: core: Query the Block Limits Extension VPD page Bart Van Assche
2023-10-05 19:40 ` [PATCH v2 07/15] scsi_proto: Add structures and constants related to I/O groups and streams Bart Van Assche
2023-10-05 19:40 ` [PATCH v2 08/15] sd: Translate data lifetime information Bart Van Assche
2023-10-05 19:40 ` [PATCH v2 09/15] scsi_debug: Reduce code duplication Bart Van Assche
2023-10-05 19:40 ` [PATCH v2 10/15] scsi_debug: Support the block limits extension VPD page Bart Van Assche
2023-10-05 19:40 ` [PATCH v2 11/15] scsi_debug: Rework page code error handling Bart Van Assche
2023-10-05 19:40 ` [PATCH v2 12/15] scsi_debug: Rework subpage " Bart Van Assche
2023-10-05 19:40 ` [PATCH v2 13/15] scsi_debug: Implement the IO Advice Hints Grouping mode page Bart Van Assche
2023-10-05 19:41 ` [PATCH v2 14/15] scsi_debug: Implement GET STREAM STATUS Bart Van Assche
2023-10-05 19:41 ` [PATCH v2 15/15] scsi_debug: Maintain write statistics per group number Bart Van Assche
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