BLK_QUEUE_IO_MIN(9) Block Devices BLK_QUEUE_IO_MIN(9)NAMEblk_queue_io_min - set minimum request size for the queue
SYNOPSIS
void blk_queue_io_min(struct request_queue * q, unsigned int min);
ARGUMENTS
q
the request queue for the device
min
smallest I/O size in bytes
DESCRIPTION
Storage devices may report a granularity or preferred minimum I/O size
which is the smallest request the device can perform without incurring
a performance penalty. For disk drives this is often the physical block
size. For RAID arrays it is often the stripe chunk size. A properly
aligned multiple of minimum_io_size is the preferred request size for
workloads where a high number of I/O operations is desired.
COPYRIGHTKernel Hackers Manual 3.8. June 2014 BLK_QUEUE_IO_MIN(9)