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Message-ID: <CAPhsuW5Nn4gPv6EKaxHqtJfRFXMLg3bEBTNknLBR3tNuxFyVMQ@mail.gmail.com>
Date:   Thu, 17 Aug 2023 14:49:16 -0700
From:   Song Liu <song@...nel.org>
To:     Mariusz Tkaczyk <mariusz.tkaczyk@...ux.intel.com>
Cc:     Yu Kuai <yukuai1@...weicloud.com>, xni@...hat.com,
        linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org,
        yukuai3@...wei.com, yi.zhang@...wei.com, yangerkun@...wei.com
Subject: Re: [PATCH -next v2 2/7] md: factor out a helper to choose sync
 direction from md_check_recovery()

On Thu, Aug 17, 2023 at 12:58 AM Mariusz Tkaczyk
<mariusz.tkaczyk@...ux.intel.com> wrote:
>
> On Tue, 15 Aug 2023 11:09:52 +0800
> Yu Kuai <yukuai1@...weicloud.com> wrote:
>
> > From: Yu Kuai <yukuai3@...wei.com>
> >
> > There are no functional changes, on the one hand make the code cleaner,
> > on the other hand prevent following checkpatch error in the next patch to
> > delay choosing sync direction to md_start_sync().
> >
> > ERROR: do not use assignment in if condition
> > +       } else if ((spares = remove_and_add_spares(mddev, NULL))) {
> >
> > Signed-off-by: Yu Kuai <yukuai3@...wei.com>
> > ---
> >  drivers/md/md.c | 68 +++++++++++++++++++++++++++++++------------------
> >  1 file changed, 43 insertions(+), 25 deletions(-)
> >
> > diff --git a/drivers/md/md.c b/drivers/md/md.c
> > index 90815be1e80f..4846ff6d25b0 100644
> > --- a/drivers/md/md.c
> > +++ b/drivers/md/md.c
> > @@ -9246,6 +9246,48 @@ static int remove_and_add_spares(struct mddev *mddev,
> >       return spares;
> >  }
> >
> > +static bool md_choose_sync_direction(struct mddev *mddev, int *spares)
>
> The naming is little confusing because as a direction I would expect forward or
> backward - from end to start or or from start to end. In this case you are
> determining the type of the background operation needed. Assuming that reshape
> is a kind of "sync" operation I would say "md_choose_sync_action".

Yeah, md_choose_sync_direction is indeed confusing.

Thanks,
Song

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