On Fri, Nov 04, 2022 at 10:39:37AM +0800, Yu Kuai wrote: > From: Yu Kuai <yukuai3@xxxxxxxxxx> > > match_u64() is called inside ioc->lock, which causes smatch static > checker warnings: > > block/blk-iocost.c:3211 ioc_qos_write() warn: sleeping in atomic context > block/blk-iocost.c:3240 ioc_qos_write() warn: sleeping in atomic context > block/blk-iocost.c:3407 ioc_cost_model_write() warn: sleeping in atomic > context > > Fix the problem by introducing a mutex and using it while prasing input > params. s/prasing/parsing/ Otherwise looks good: Reviewed-by: Christoph Hellwig <hch@xxxxxx>
