diff options
Diffstat (limited to 'drivers/s390/block/dasd.c')
| -rw-r--r-- | drivers/s390/block/dasd.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 82d9ce36bd0b..4e266f43332d 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -369,6 +369,11 @@ dasd_state_ready_to_online(struct dasd_device * device) device->state = DASD_STATE_ONLINE; if (device->block) { dasd_schedule_block_bh(device->block); + if ((device->features & DASD_FEATURE_USERAW)) { + disk = device->block->gdp; + kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE); + return 0; + } disk = device->block->bdev->bd_disk; disk_part_iter_init(&piter, disk, DISK_PITER_INCL_PART0); while ((part = disk_part_iter_next(&piter))) @@ -394,7 +399,7 @@ static int dasd_state_online_to_ready(struct dasd_device *device) return rc; } device->state = DASD_STATE_READY; - if (device->block) { + if (device->block && !(device->features & DASD_FEATURE_USERAW)) { disk = device->block->bdev->bd_disk; disk_part_iter_init(&piter, disk, DISK_PITER_INCL_PART0); while ((part = disk_part_iter_next(&piter))) @@ -2258,8 +2263,20 @@ static void dasd_setup_queue(struct dasd_block *block) { int max; - blk_queue_logical_block_size(block->request_queue, block->bp_block); - max = block->base->discipline->max_blocks << block->s2b_shift; + if (block->base->features & DASD_FEATURE_USERAW) { + /* + * the max_blocks value for raw_track access is 256 + * it is higher than the native ECKD value because we + * only need one ccw per track + * so the max_hw_sectors are + * 2048 x 512B = 1024kB = 16 tracks + */ + max = 2048; + } else { + max = block->base->discipline->max_blocks << block->s2b_shift; + } + blk_queue_logical_block_size(block->request_queue, + block->bp_block); blk_queue_max_hw_sectors(block->request_queue, max); blk_queue_max_segments(block->request_queue, -1L); /* with page sized segments we can translate each segement into |
