Jens, On 2018/09/28 12:53, Jens Axboe wrote: > On 9/26/18 8:16 PM, Damien Le Moal wrote: >> As check_swd() is useful for debugging, revert its removal done with >> commit d60be7d51cbb ("zbd: Remove unused function and variable"). > > The problem with dead code is that it's often forgotten when > other changes are made, and then it doesn't even compile or > work anymore. > > I'd be happier if this was dependent on some debug static > bool instead, ala: > > static bool zbd_debug; > > And then have check_swd() do > > if (!zbd_debug) > return; > > instead of hiding everything behind an #if 0. OK. No problem. I will update and send a v2. (and another patch to fix the incorrect comments signaled by Bart) Thanks ! -- Damien Le Moal Western Digital Research