On Thu, Apr 01, 2021 at 10:19:15AM +0800, Ming Lei wrote: > Hi Jens, > > Add per-task io poll context for holding HIPRI blk-mq/underlying bios > queued from bio based driver's io submission context, and reuse one bio > padding field for storing 'cookie' returned from submit_bio() for these > bios. Also explicitly end these bios in poll context by adding two > new bio flags. > > In this way, we needn't to poll all underlying hw queues any more, > which is implemented in Jeffle's patches. And we can just poll hw queues > in which there is HIPRI IO queued. > > Usually io submission and io poll share same context, so the added io > poll context data is just like one stack variable, and the cost for > saving bios is cheap. > > V5: > - fix one use-after-free issue in case that polling is from another > context: adds one new cookie of BLK_QC_T_NOT_READY for preventing > this issue in patch 8/12 > - add reviewed-by & tested-by tag Hello Guys, Ping... Thanks, Ming -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
