Messages in this thread | | | Date | Thu, 21 Jan 2021 11:06:10 -0500 (EST) | From | Mikulas Patocka <> | Subject | Re: Expense of read_iter |
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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
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