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From: Keith Busch <kbusch@kernel.org>
To: Christoph Hellwig <hch@lst.de>
Cc: "Jens Axboe" <axboe@kernel.dk>,
	dm-devel@redhat.com, linux-xfs@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-um@lists.infradead.org,
	linux-block@vger.kernel.org, drbd-dev@lists.linbit.com,
	nbd@other.debian.org, ceph-devel@vger.kernel.org,
	virtualization@lists.linux-foundation.org,
	xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org,
	linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org,
	linux-mtd@lists.infradead.org, linux-nvme@lists.infradead.org,
	linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org,
	target-devel@vger.kernel.org, linux-btrfs@vger.kernel.org,
	linux-ext4@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com,
	jfs-discussion@lists.sourceforge.net,
	linux-nilfs@vger.kernel.org, ntfs3@lists.linux.dev,
	ocfs2-devel@oss.oracle.com, linux-mm@kvack.org,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	"Christoph Böhmwalder" <christoph.boehmwalder@linbit.com>,
	"Coly Li" <colyli@suse.de>
Subject: Re: [PATCH 24/27] block: remove QUEUE_FLAG_DISCARD
Date: Mon, 11 Apr 2022 08:01:41 -0600	[thread overview]
Message-ID: <YlQ0xbtIcf8gti43@kbusch-mbp.dhcp.thefacebook.com> (raw)
In-Reply-To: <20220409045043.23593-25-hch@lst.de>

On Sat, Apr 09, 2022 at 06:50:40AM +0200, Christoph Hellwig wrote:
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index efb85c6d8e2d5..7e07dd69262a7 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -1607,10 +1607,8 @@ static void nvme_config_discard(struct gendisk *disk, struct nvme_ns *ns)
>  	struct request_queue *queue = disk->queue;
>  	u32 size = queue_logical_block_size(queue);
>  
> -	if (ctrl->max_discard_sectors == 0) {
> -		blk_queue_flag_clear(QUEUE_FLAG_DISCARD, queue);
> +	if (ctrl->max_discard_sectors == 0)
>  		return;
> -	}

I think we need to update the queue limit in this condition. While unlikley,
the flag was cleared here in case the device changed support for discard from
the previous reset. 


  parent reply	other threads:[~2022-04-11 14:02 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-09  4:50 use block_device based APIs in block layer consumers v2 Christoph Hellwig
2022-04-09  4:50 ` [PATCH 01/27] target: remove an incorrect unmap zeroes data deduction Christoph Hellwig
2022-04-09  4:50 ` [PATCH 02/27] target: pass a block_device to target_configure_unmap_from_queue Christoph Hellwig
2022-04-09  4:50 ` [PATCH 03/27] target: fix discard alignment on partitions Christoph Hellwig
2022-04-09  4:50 ` [PATCH 04/27] drbd: remove assign_p_sizes_qlim Christoph Hellwig
2022-04-09  8:16   ` [Drbd-dev] " Christoph Böhmwalder
2022-04-09  4:50 ` [PATCH 05/27] drbd: use bdev based limit helpers in drbd_send_sizes Christoph Hellwig
2022-04-09  4:50 ` [PATCH 06/27] drbd: use bdev_alignment_offset instead of queue_alignment_offset Christoph Hellwig
2022-04-09  4:50 ` [PATCH 07/27] drbd: cleanup decide_on_discard_support Christoph Hellwig
2022-04-09  4:50 ` [PATCH 08/27] btrfs: use bdev_max_active_zones instead of open coding it Christoph Hellwig
2022-04-11 17:22   ` David Sterba
2022-04-09  4:50 ` [PATCH 09/27] ntfs3: use bdev_logical_block_size " Christoph Hellwig
2022-04-09  4:50 ` [PATCH 10/27] mm: use bdev_is_zoned in claim_swapfile Christoph Hellwig
2022-04-09  4:50 ` [PATCH 11/27] block: add a bdev_nonrot helper Christoph Hellwig
2022-04-09  4:50 ` [PATCH 12/27] block: add a bdev_write_cache helper Christoph Hellwig
2022-04-09  4:50 ` [PATCH 13/27] block: add a bdev_fua helper Christoph Hellwig
2022-04-09  4:50 ` [PATCH 14/27] block: add a bdev_stable_writes helper Christoph Hellwig
2022-04-09  4:50 ` [PATCH 15/27] block: add a bdev_max_zone_append_sectors helper Christoph Hellwig
2022-04-09  4:50 ` [PATCH 16/27] block: use bdev_alignment_offset in part_alignment_offset_show Christoph Hellwig
2022-04-09  4:50 ` [PATCH 17/27] block: use bdev_alignment_offset in disk_alignment_offset_show Christoph Hellwig
2022-04-09  4:50 ` [PATCH 18/27] block: move bdev_alignment_offset and queue_limit_alignment_offset out of line Christoph Hellwig
2022-04-09  4:50 ` [PATCH 19/27] block: remove queue_discard_alignment Christoph Hellwig
2022-04-09  4:50 ` [PATCH 20/27] block: use bdev_discard_alignment in part_discard_alignment_show Christoph Hellwig
2022-04-09  4:50 ` [PATCH 21/27] block: move {bdev,queue_limit}_discard_alignment out of line Christoph Hellwig
2022-04-09  4:50 ` [PATCH 22/27] block: refactor discard bio size limiting Christoph Hellwig
2022-04-09  4:50 ` [PATCH 23/27] block: add a bdev_max_discard_sectors helper Christoph Hellwig
2022-04-09  4:50 ` [PATCH 24/27] block: remove QUEUE_FLAG_DISCARD Christoph Hellwig
2022-04-09  8:15   ` Christoph Böhmwalder
2022-04-10  6:26     ` Christoph Hellwig
2022-04-11 12:03   ` Jan Höppner
2022-04-11 14:01   ` Keith Busch [this message]
2022-04-11 17:24   ` David Sterba
2022-04-09  4:50 ` [PATCH 25/27] block: add a bdev_discard_granularity helper Christoph Hellwig
2022-04-11 17:25   ` David Sterba
2022-04-09  4:50 ` [PATCH 26/27] block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARD Christoph Hellwig
2022-04-09 14:32   ` Coly Li
2022-04-10  6:27     ` Christoph Hellwig
2022-04-09  4:50 ` [PATCH 27/27] direct-io: remove random prefetches Christoph Hellwig
2022-04-15  4:52 use block_device based APIs in block layer consumers v3 Christoph Hellwig
2022-04-15  4:52 ` [PATCH 24/27] block: remove QUEUE_FLAG_DISCARD Christoph Hellwig
2022-04-15  5:47   ` Chaitanya Kulkarni

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