John, > This series introduces atomic write support for software RAID 0/1/10. > > The main changes are to ensure that we can calculate the stacked > device request_queue limits appropriately for atomic writes. > Fundamentally, if some bottom does not support atomic writes, then > atomic writes are not supported for the top device. Furthermore, the > atomic writes limits are the lowest common supported limits from all > bottom devices. > > Flag BLK_FEAT_ATOMIC_WRITES_STACKED is introduced to enable atomic > writes for stacked devices selectively. This ensures that we can > analyze and test atomic writes support per individual md/dm > personality (prior to enabling). LGTM. Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> -- Martin K. Petersen Oracle Linux Engineering
