blk_limits_max_hw_sectors — set hard and soft limit of max sectors for request
void blk_limits_max_hw_sectors ( | struct queue_limits * limits, |
unsigned int max_hw_sectors); |
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 capabilities of the I/O controller.
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.