On 4/17/24 10:51 AM, Mikulas Patocka wrote: > There was reported hang warning when using dm-integrity on the top of loop > device on XFS on a rotational disk. The warning was triggered because > flush on the loop device was too slow. > > There's no easy way to reduce the latency, so I made a patch that shuts > the warning up. > > There's already a function blk_wait_io that avoids the hung task warning. > This commit moves this function from block/blk.h to > kernel/sched/completion.c, renames it to wait_for_completion_long_io > (because it is not dependent on the block layer at all) and uses it in > dm-io instead of wait_for_completion_io. Looks good to me, though I'd probably split out that dm change as it's a new addition where the other parts are strictly mechanical (moving the helper to where it belongs, and using it where we already do it). -- Jens Axboe
