Re: [PATCH 14/26] block: move the nonrot flag to queue_limits

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To: Christoph Hellwig <hch@xxxxxx>
Subject: Re: [PATCH 14/26] block: move the nonrot flag to queue_limits
From: Keith Busch <kbusch@xxxxxxxxxx>
Date: Mon, 24 Jun 2024 11:08:16 -0600
Cc: Jens Axboe <axboe@xxxxxxxxx>, 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@xxxxxxxxxxxxxxx, 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, Damien Le Moal <dlemoal@xxxxxxxxxx>
In-reply-to: <20240617060532.127975-15-hch@lst.de>

On Mon, Jun 17, 2024 at 08:04:41AM +0200, Christoph Hellwig wrote:
> -#define blk_queue_nonrot(q)	test_bit(QUEUE_FLAG_NONROT, &(q)->queue_flags)
> +#define blk_queue_nonrot(q)	((q)->limits.features & BLK_FEAT_ROTATIONAL)

This is inverted. Should be:

 #define blk_queue_nonrot(q)	(!((q)->limits.features & BLK_FEAT_ROTATIONAL))

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Follow-Ups:
- Re: [PATCH 14/26] block: move the nonrot flag to queue_limits
  - From: Simon Fernandez
- Re: [PATCH 14/26] block: move the nonrot flag to queue_limits
  - From: Christoph Hellwig

References:
- move features flags into queue_limits v2
  - From: Christoph Hellwig
- [PATCH 14/26] block: move the nonrot flag to queue_limits
  - From: Christoph Hellwig

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