On Thu, 21 Jan 2021, Matthew Wilcox wrote: > On Wed, Jan 20, 2021 at 10:12:01AM -0500, Mikulas Patocka wrote: > > Do you have some idea how to optimize the generic code that calls > > ->read_iter? > > Yes. > > > It might be better to maintain an f_iocb_flags in the > > struct file and just copy that unconditionally. We'd need to remember > > to update it in fcntl(F_SETFL), but I think that's the only place. > > Want to give that a try? Yes - send me the patch and I'll benchmark it. Mikulas
