Re: [PATCH v2][RESEND] md/raid10: properly indicate failure when ending a failed write request

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On Tue, Jun 29, 2021 at 12:24 AM Guoqing Jiang <jiangguoqing@xxxxxxxxxx> wrote:
>
>
>
> On 6/28/21 3:15 PM, wsy@xxxxxxxxxx wrote:
> > Similar to commit 2417b9869b81882ab90fd5ed1081a1cb2d4db1dd, this patch
> > fixes the same bug in raid10. Also cleanup the comments.
> >
> > Fixes: 7cee6d4e6035 ("md/raid10: end bio when the device faulty")
> > Signed-off-by: Wei Shuyu <wsy@xxxxxxxxxx>

Applied to md-next.

I fixed some issues highlighted by checkpatch.pl. For the next time, please run
checkpatch.pl before sending the patch.

Thanks,
Song

> > ---
> >   drivers/md/raid1.c  | 2 --
> >   drivers/md/raid10.c | 4 ++--
> >   2 files changed, 2 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
> > index ced076ba560e..753822ca9613 100644
> > --- a/drivers/md/raid1.c
> > +++ b/drivers/md/raid1.c
> > @@ -472,8 +472,6 @@ static void raid1_end_write_request(struct bio *bio)
> >               /*
> >                * When the device is faulty, it is not necessary to
> >                * handle write error.
> > -              * For failfast, this is the only remaining device,
> > -              * We need to retry the write without FailFast.
> >                */
> >               if (!test_bit(Faulty, &rdev->flags))
> >                       set_bit(R1BIO_WriteError, &r1_bio->state);
> > diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
> > index 13f5e6b2a73d..40e845fb9717 100644
> > --- a/drivers/md/raid10.c
> > +++ b/drivers/md/raid10.c
> > @@ -469,12 +469,12 @@ static void raid10_end_write_request(struct bio *bio)
> >                       /*
> >                        * When the device is faulty, it is not necessary to
> >                        * handle write error.
> > -                      * For failfast, this is the only remaining device,
> > -                      * We need to retry the write without FailFast.
> >                        */
> >                       if (!test_bit(Faulty, &rdev->flags))
> >                               set_bit(R10BIO_WriteError, &r10_bio->state);
> >                       else {
> > +                             /* Fail the request */
> > +                             set_bit(R10BIO_Degraded, &r10_bio->state);
> >                               r10_bio->devs[slot].bio = NULL;
> >                               to_put = bio;
> >                               dec_rdev = 1;
>
> Acked-by: Guoqing Jiang <jiangguoqing@xxxxxxxxxx>
>
> Thanks,
> Guoqing



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