On Sat, 1 Jan 2022 16:30:07 -0800 Song Liu <song@xxxxxxxxxx> wrote: > On Fri, Dec 17, 2021 at 1:30 AM Mariusz Tkaczyk > <mariusz.tkaczyk@xxxxxxxxxxxxxxx> wrote: > > > > As suggested by Neil Brown[1], this limitation seems to be > > deprecated. > > > > With plugging in use, writes are processed behind the raid thread > > and conf->pending_count is not increased. This limitation occurs > > only if caller doesn't use plugs. > > > > It can be avoided and often it is (with plugging). There are no > > reports that queue is growing to enormous size so remove queue > > limitation for non-plugged IOs too. > > > > [1] > > https://lore.kernel.org/linux-raid/162496301481.7211.18031090130574610495@xxxxxxxxxxxxxxxxxxxxx > > > > Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@xxxxxxxxxxxxxxx> > > I applied this patch to md-next, cecause it helps simplify Vishal's > patches for REQ_NOWAIT. However, I think this change is not complete, > as we can now remove pending_count from r1conf and r10conf. Please > send patch on top of md-next to clean up pending_count. > Should I also remove pending_cnt from raid1_plug_cb and raid10_plug_cb? Thanks, Mariusz
