On Wednesday, October 04, 2017 11:48:27 AM Ulf Hansson wrote: > [...] > > >> MQ code that doesn't perform and therefore we cannot switch seamlessly > >> to MQ. > > > > I think that switching seamlessly to blk-mq in short/medium-term > > is not possible (SCSI tried and failed to do so). The changes to > > the old path are very complex and besides affecting performance > > they also affect error recovery handling (which needs to be tested > > properly before the switch). > > Agreed, and that's why I have queued up the new Kconfig option for > enabling the blkmq path from MMC. This seems premature - the new Kconfig option change for "mmc-mq" should belong to the patch adding "mmc-mq" support (otherwise it may just confuse users who enable it). Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics
