On 8/4/21 9:35 PM, Ming Lei wrote: > On Thu, Jul 29, 2021 at 11:42:26AM +0800, Ming Lei wrote: >> When merging one bio to request, if they are discard IO and the queue >> supports multi-range discard, we need to return ELEVATOR_DISCARD_MERGE >> because both block core and related drivers(nvme, virtio-blk) doesn't >> handle mixed discard io merge(traditional IO merge together with >> discard merge) well. >> >> Fix the issue by returning ELEVATOR_DISCARD_MERGE in this situation, >> so both blk-mq and drivers just need to handle multi-range discard. >> >> Reported-by: Oleksandr Natalenko <oleksandr@xxxxxxxxxxxxxx> >> Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx> > > Hello Jens and Guys, > > Ping... Since this isn't a new regression this release and since this kind of change always makes me a bit nervous, any objections to queueing it up for 5.15 with the stable/fixes tags? -- Jens Axboe
