0001-block-avoid-setting-wbt_lat_usec-to-current-value.patch - I didn't mention this one:) it is not needed for 4.15, because blk_mq_freeze_queue() in queue_wb_lat_store() was added only at 4.19 due to c125311d96b1bfcce0f5930a4f0fdfe39ea14f7c
I think, we can skip it for 4.15.
So, i'm asking to backport this one - e5fa81408fb43ebabde65938ef8b20ae879017e7
Hi, thank you! avoid-setting- none-scheduler- if-it-s- already- n.patch - looks good.
0002-block-
0001-block- avoid-setting- wbt_lat_ usec-to- current- value.patch - I didn't mention this one:) it is not needed for 4.15, because blk_mq_ freeze_ queue() in queue_wb_ lat_store( ) was added only at 4.19 due to c125311d96b1bfc ce0f5930a4f0fdf e39ea14f7c
I think, we can skip it for 4.15.
So, i'm asking to backport this one - e5fa81408fb43eb abde65938ef8b20 ae879017e7