Re: [PATCH 19/26] block: move the nowait flag to queue_limits
- To: Damien Le Moal <dlemoal@kernel.org>
- Cc: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>, Geert Uytterhoeven <geert@linux-m68k.org>, Richard Weinberger <richard@nod.at>, Philipp Reisner <philipp.reisner@linbit.com>, Lars Ellenberg <lars.ellenberg@linbit.com>, Christoph Böhmwalder <christoph.boehmwalder@linbit.com>, Josef Bacik <josef@toxicpanda.com>, Ming Lei <ming.lei@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Jason Wang <jasowang@redhat.com>, Roger Pau Monné <roger.pau@citrix.com>, Alasdair Kergon <agk@redhat.com>, Mike Snitzer <snitzer@kernel.org>, Mikulas Patocka <mpatocka@redhat.com>, Song Liu <song@kernel.org>, Yu Kuai <yukuai3@huawei.com>, Vineeth Vijayan <vneethv@linux.ibm.com>, "Martin K. Petersen" <martin.petersen@oracle.com>, linux-m68k@lists.linux-m68k.org, linux-um@lists.infradead.org, drbd-dev@lists.linbit.com, nbd@other.debian.org, linuxppc-dev@lists.ozlabs.org, ceph-devel@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-block@vger.kernel.org
- Subject: Re: [PATCH 19/26] block: move the nowait flag to queue_limits
- From: Christoph Hellwig <hch@lst.de>
- Date: Wed, 12 Jun 2024 07:01:09 +0200
- Message-id: <[🔎] 20240612050109.GA26959@lst.de>
- In-reply-to: <[🔎] 4845aae8-ad03-407e-bf31-f164b8f684d4@kernel.org>
- References: <[🔎] 20240611051929.513387-1-hch@lst.de> <[🔎] 20240611051929.513387-20-hch@lst.de> <[🔎] 4845aae8-ad03-407e-bf31-f164b8f684d4@kernel.org>
On Tue, Jun 11, 2024 at 05:16:37PM +0900, Damien Le Moal wrote:
> > @@ -1825,9 +1815,7 @@ int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
> > int r;
> >
> > if (dm_table_supports_nowait(t))
> > - blk_queue_flag_set(QUEUE_FLAG_NOWAIT, q);
> > - else
> > - blk_queue_flag_clear(QUEUE_FLAG_NOWAIT, q);
> > + limits->features &= ~BLK_FEAT_NOWAIT;
>
> Shouldn't you set the flag here instead of clearing it ?
No, but the dm_table_supports_nowait check needs to be inverted.
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