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Re: [PATCH 17/26] block: move the stable_write flag to queue_limits
- To: Christoph Hellwig <hch@xxxxxx>, Jens Axboe <axboe@xxxxxxxxx>
- From: Damien Le Moal <dlemoal@xxxxxxxxxx>
- Date: Tue, 11 Jun 2024 17:12:40 +0900
- Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>, Richard Weinberger <richard@xxxxxx>, Philipp Reisner <philipp.reisner@xxxxxxxxxx>, Lars Ellenberg <lars.ellenberg@xxxxxxxxxx>, Christoph Böhmwalder <christoph.boehmwalder@xxxxxxxxxx>, Josef Bacik <josef@xxxxxxxxxxxxxx>, Ming Lei <ming.lei@xxxxxxxxxx>, "Michael S. Tsirkin" <mst@xxxxxxxxxx>, Jason Wang <jasowang@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Alasdair Kergon <agk@xxxxxxxxxx>, Mike Snitzer <snitzer@xxxxxxxxxx>, Mikulas Patocka <mpatocka@xxxxxxxxxx>, Song Liu <song@xxxxxxxxxx>, Yu Kuai <yukuai3@xxxxxxxxxx>, Vineeth Vijayan <vneethv@xxxxxxxxxxxxx>, "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>, linux-m68k@xxxxxxxxxxxxxxxxxxxx, linux-um@xxxxxxxxxxxxxxxxxxx, drbd-dev@xxxxxxxxxxxxxxxx, nbd@xxxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, ceph-devel@xxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-bcache@xxxxxxxxxxxxxxx, dm-devel@xxxxxxxxxxxxxxx, linux-raid@xxxxxxxxxxxxxxx, linux-mmc@xxxxxxxxxxxxxxx, linux-mtd@xxxxxxxxxxxxxxxxxxx, nvdimm@xxxxxxxxxxxxxxx, linux-nvme@xxxxxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx
- Delivery-date: Tue, 11 Jun 2024 08:12:59 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 6/11/24 2:19 PM, Christoph Hellwig wrote:
> Move the io_stat flag into the queue_limits feature field so that it can
s/io_stat/stable_write
> be set atomically and all I/O is frozen when changing the flag.
>
> The flag is now inherited by blk_stack_limits, which greatly simplifies
> the code in dm, and fixed md which previously did not pass on the flag
> set on lower devices.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Other than the nit above, looks OK to me.
Reviewed-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
--
Damien Le Moal
Western Digital Research
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