https://bugzilla.kernel.org/show_bug.cgi?id=201685 --- Comment #225 from Steven Noonan (steven@xxxxxxxxxxxxxx) --- (In reply to Manfred from comment #224) > (In reply to Guenter Roeck from comment #223) > > > There is a key difference, though: With 4.18.20, cfq is active. > > > > $ cat /sys/block/sd*/queue/scheduler > > noop deadline [cfq] > > noop deadline [cfq] > > > > In 4.19, cfq is not available <--- ? > > # grep -i cfq config-4.19.3-gentoo > > CONFIG_IOSCHED_CFQ=y < --- ! > # CONFIG_CFQ_GROUP_IOSCHED is not set > CONFIG_DEFAULT_CFQ=y > CONFIG_DEFAULT_IOSCHED="cfq" > When scsi_mod.use_blk_mq=1 (i.e. result of CONFIG_SCSI_MQ_DEFAULT=y), the I/O scheduler is just "none", and you cannot set a different scheduler. -- You are receiving this mail because: You are watching the assignee of the bug.
