On 5/3/18 2:15 PM, Adam Manzanares wrote: > > > On 5/3/18 11:33 AM, Matthew Wilcox wrote: >> On Thu, May 03, 2018 at 11:21:14AM -0700, adam.manzanares@xxxxxxx wrote: >>> If we want to avoid bloating struct kiocb, I suggest we turn the private field >>> into a union of the private and ki_ioprio field. It seems like the users of >>> the private field all use it at a point where we can yank the priority from >>> the kiocb before the private field is used. Comments and suggestions welcome. >> >> Or we could just make ki_hint a u8 or u16 ... seems unlikely we'll need >> 32 bits of ki_hint. (currently defined values are 1-5) > > I like the approach of using a u16 for the ki_hint. I'll update and > resubmit. It's intended to be a mask. If you do shrink it for now, then we need some guard code to ensure it can always carry what it needs to. -- Jens Axboe
