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Re: [PATCH 24/27] block: remove QUEUE_FLAG_DISCARD
- To: Christoph Hellwig <hch@xxxxxx>, Jens Axboe <axboe@xxxxxxxxx>
- From: Jan Höppner <hoeppner@xxxxxxxxxxxxx>
- Date: Mon, 11 Apr 2022 14:03:50 +0200
- Cc: dm-devel@xxxxxxxxxx, linux-xfs@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-um@xxxxxxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, drbd-dev@xxxxxxxxxxxxxxxx, nbd@xxxxxxxxxxxxxxxx, ceph-devel@xxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-bcache@xxxxxxxxxxxxxxx, linux-raid@xxxxxxxxxxxxxxx, linux-mmc@xxxxxxxxxxxxxxx, linux-mtd@xxxxxxxxxxxxxxxxxxx, linux-nvme@xxxxxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, target-devel@xxxxxxxxxxxxxxx, linux-btrfs@xxxxxxxxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx, cluster-devel@xxxxxxxxxx, jfs-discussion@xxxxxxxxxxxxxxxxxxxxx, linux-nilfs@xxxxxxxxxxxxxxx, ntfs3@xxxxxxxxxxxxxxx, ocfs2-devel@xxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, "Martin K . Petersen" <martin.petersen@xxxxxxxxxx>, Christoph Böhmwalder <christoph.boehmwalder@xxxxxxxxxx>, Coly Li <colyli@xxxxxxx>
- Delivery-date: Mon, 11 Apr 2022 12:15:20 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 09/04/2022 06:50, 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@xxxxxx>
> Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
> Acked-by: Christoph Böhmwalder <christoph.boehmwalder@xxxxxxxxxx> [btrfs]
> Acked-by: Coly Li <colyli@xxxxxxx> [bcache]
> ---
For
> drivers/s390/block/dasd_fba.c | 1 -
Acked-by: Jan Höppner <hoeppner@xxxxxxxxxxxxx>
|
