- void blk_limits_max_hw_sectors(struct queue_limits * limits, unsigned int max_hw_sectors);
- the queue limits
- max hardware sectors in the usual 512b unit
Enables a low level driver to set a hard upper limit, max_hw_sectors, on the size of requests. max_hw_sectors is set by the device driver based upon the combined capabilities of I/O controller and storage device.
max_sectors is a soft limit imposed by the block layer for filesystem type requests. This value can be overridden on a per-device basis in /sys/block/<device>/queue/max_sectors_kb. The soft limit can not exceed max_hw_sectors.