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SubjectRe: [PATCH 06/20] block: Bring back zero_fill_bio_iter
On Mon, Jul 24, 2023 at 10:35:45AM -0700, Christoph Hellwig wrote:
> On Wed, Jul 12, 2023 at 05:11:01PM -0400, Kent Overstreet wrote:
> > From: Kent Overstreet <kent.overstreet@gmail.com>
> >
> > This reverts 6f822e1b5d9dda3d20e87365de138046e3baa03a - this helper is
> > used by bcachefs.
> >
> > Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
> > Cc: Jens Axboe <axboe@kernel.dk>
> > Cc: linux-block@vger.kernel.org
> > ---
> > block/bio.c | 6 +++---
> > include/linux/bio.h | 7 ++++++-
> > 2 files changed, 9 insertions(+), 4 deletions(-)
>
> I really don't see any point in offering this in the block layer. By
> the lack of any other caller it obviously isn't such a generic and
> always used helper, but more importantly it literally is three lines
> of code to implement it.

And yet, we've had a subtle bug introduced in that code that took quite
awhile to be fixed - I'm not pro code duplication in general and I don't
think this is a good place to start.

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