Re: [PATCH v8 06/10] iomap: fix iomap_dio_zero() for fs bs > system page size

[Pankaj Raghav (Samsung)]

On Tue, Jul 02, 2024 at 05:42:16PM +0200, Christoph Hellwig wrote:
> On Tue, Jul 02, 2024 at 02:01:23PM +0000, Pankaj Raghav (Samsung) wrote:
> +static int iomap_dio_zero(const struct iomap_iter *iter, struct iomap_dio *dio,
> >                 loff_t pos, unsigned len)
> >  {
> >         struct inode *inode = file_inode(dio->iocb->ki_filp);
> >         struct bio *bio;
> >  
> > +       if (!len)
> > +               return 0;
> >         /*
> >          * Max block size supported is 64k
> >          */
> > -       WARN_ON_ONCE(len > ZERO_PAGE_64K_SIZE);
> > +       if (len > ZERO_PAGE_64K_SIZE)
> > +               return -EINVAL;
> 
> The should probably be both WARN_ON_ONCE in addition to the error
> return (and ZERO_PAGE_64K_SIZE really needs to go away..)

Yes, I will rename it to ZERO_PAGE_SZ_64K as you suggested.
> 
> > +                       ret = iomap_dio_zero(iter, dio, pos, fs_block_size - pad);
> 
> Overly lone line here.
> 
> Otherwise this looks good.
>