Add a function to find associated mpath_disk for a request. Signed-off-by: John Garry --- drivers/scsi/sd.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index f94a3b696dcab..9617878b53ec6 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -4081,6 +4081,14 @@ static int sd_mpath_ioctl(struct scsi_device *sdp, blk_mode_t mode, return sd_ioctl(bdev, mode, cmd, arg); } +static struct mpath_disk *sd_mpath_to_disk(struct request *req) +{ + struct scsi_disk *sdkp = req->part->bd_disk->private_data; + struct sd_mpath_disk *sd_mpath_disk = sdkp->sd_mpath_disk; + + return sd_mpath_disk->mpath_disk; +} + static int sd_mpath_pr_register(struct scsi_device *sdp, u64 old_key, u64 new_key, u32 flags) { @@ -4592,6 +4600,7 @@ static struct scsi_driver sd_template = { .mpath_end_cmd = sd_mpath_end_command, .mpath_ioctl = sd_mpath_ioctl, .mpath_pr_ops = &sd_mpath_pr_ops, + .to_mpath_disk = sd_mpath_to_disk, #endif .done = sd_done, .eh_action = sd_eh_action, -- 2.43.5