Commit 5d540162 authored by Caleb Sander Mateos's avatar Caleb Sander Mateos Committed by Jens Axboe
Browse files

ublk: report BLK_SPLIT_INTERVAL_CAPABLE 



The ublk driver doesn't access request integrity buffers directly, it
only copies them to/from the ublk server in ublk_copy_user_integrity().
ublk_copy_user_integrity() uses bio_for_each_integrity_vec() to walk all
the integrity segments. ublk devices are therefore capable of handling
requests with integrity intervals split across segments. Set
BLK_SPLIT_INTERVAL_CAPABLE in the struct blk_integrity flags for ublk
devices to opt out of the integrity-interval dma_alignment limit.

Reviewed-by: default avatarMing Lei <ming.lei@redhat.com>
Reviewed-by: default avatarKeith Busch <kbusch@kernel.org>
Reviewed-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: default avatarCaleb Sander Mateos <csander@purestorage.com>
Signed-off-by: default avatarKeith Busch <kbusch@kernel.org>
Link: https://patch.msgid.link/20260313144701.1221652-3-kbusch@meta.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 203247c5

drivers/block/ublk_drv.c

+1 −1
Original line number Diff line number Diff line
@@ -808,7 +808,7 @@ static void ublk_dev_param_basic_apply(struct ublk_device *ub) 


static int ublk_integrity_flags(u32 flags)

{

	int ret_flags = 0;

	int ret_flags = BLK_SPLIT_INTERVAL_CAPABLE;



	if (flags & LBMD_PI_CAP_INTEGRITY) {

		flags &= ~LBMD_PI_CAP_INTEGRITY;