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From: David Sterba <dsterba@suse.cz>
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 19:24:21 +0200	[thread overview]
Message-ID: <20220411172421.GU15609@twin.jikos.cz> (raw)
In-Reply-To: <20220409045043.23593-25-hch@lst.de>

On Sat, Apr 09, 2022 at 06:50:40AM +0200, Christoph Hellwig wrote:
> Just use a non-zero max_discard_sectors as an indicator for discard
> support, similar to what is done for write zeroes.
> 
> The only places where needs special attention is the RAID5 driver,
> which must clear discard support for security reasons by default,
> even if the default stacking rules would allow for it.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
> Acked-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> [btrfs]
> Acked-by: Coly Li <colyli@suse.de> [bcache]
> ---
>  arch/um/drivers/ubd_kern.c          |  2 --
>  block/blk-core.c                    |  2 +-
>  block/blk-lib.c                     |  2 +-
>  block/blk-mq-debugfs.c              |  1 -
>  block/ioctl.c                       |  3 +--
>  drivers/block/drbd/drbd_main.c      |  2 +-
>  drivers/block/drbd/drbd_nl.c        | 19 ++-----------------
>  drivers/block/drbd/drbd_receiver.c  |  3 +--
>  drivers/block/loop.c                | 11 +++--------
>  drivers/block/nbd.c                 |  5 +----
>  drivers/block/null_blk/main.c       |  1 -
>  drivers/block/rbd.c                 |  1 -
>  drivers/block/rnbd/rnbd-clt.c       |  2 --
>  drivers/block/rnbd/rnbd-srv-dev.h   |  3 ---
>  drivers/block/virtio_blk.c          |  2 --
>  drivers/block/xen-blkback/xenbus.c  |  2 +-
>  drivers/block/xen-blkfront.c        |  2 --
>  drivers/block/zram/zram_drv.c       |  1 -
>  drivers/md/bcache/request.c         |  4 ++--
>  drivers/md/bcache/super.c           |  3 +--
>  drivers/md/bcache/sysfs.c           |  2 +-
>  drivers/md/dm-cache-target.c        |  9 +--------
>  drivers/md/dm-clone-target.c        |  9 +--------
>  drivers/md/dm-log-writes.c          |  3 +--
>  drivers/md/dm-raid.c                |  9 ++-------
>  drivers/md/dm-table.c               |  9 ++-------
>  drivers/md/dm-thin.c                | 11 +----------
>  drivers/md/dm.c                     |  3 +--
>  drivers/md/md-linear.c              | 11 +----------
>  drivers/md/raid0.c                  |  7 -------
>  drivers/md/raid1.c                  | 16 +---------------
>  drivers/md/raid10.c                 | 18 ++----------------
>  drivers/md/raid5-cache.c            |  2 +-
>  drivers/md/raid5.c                  | 12 ++++--------
>  drivers/mmc/core/queue.c            |  1 -
>  drivers/mtd/mtd_blkdevs.c           |  1 -
>  drivers/nvme/host/core.c            |  6 ++----
>  drivers/s390/block/dasd_fba.c       |  1 -
>  drivers/scsi/sd.c                   |  2 --
>  drivers/target/target_core_device.c |  2 +-

For

>  fs/btrfs/extent-tree.c              |  4 ++--
>  fs/btrfs/ioctl.c                    |  2 +-

Acked-by: David Sterba <dsterba@suse.com>


  parent reply	other threads:[~2022-04-11 17:28 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
2022-04-11 17:24   ` David Sterba [this message]
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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