[PATCH 0/5] dm-mpath: improve I/O schedule

Hi, We depend on I/O scheduler in dm-mpath layer, and underlying I/O scheduler is bypassed basically. I/O scheduler depends on queue busy condition to trigger I/O merge, unfortunatley inside dm-mpath, the underlying queue busy feedback is not accurate enough, and we just allocate one request and

[PATCH 0/5] dm-mpath: improve I/O schedule

Hi, We depend on I/O scheduler in dm-mpath layer, and underlying I/O scheduler is bypassed basically. I/O scheduler depends on queue busy condition to trigger I/O merge, unfortunatley inside dm-mpath, the underlying queue busy feedback is not accurate enough, and we just allocate one request and