Re: [PATCH 12/23] ceph: use bvec_set_page to initialize a bvec

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On Mon, Jan 30, 2023 at 10:22 AM Christoph Hellwig <hch@xxxxxx> wrote:
>
> Use the bvec_set_page helper to initialize a bvec.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
>  fs/ceph/file.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/fs/ceph/file.c b/fs/ceph/file.c
> index 764598e1efd91f..6419dce7c57987 100644
> --- a/fs/ceph/file.c
> +++ b/fs/ceph/file.c
> @@ -103,11 +103,11 @@ static ssize_t __iter_get_bvecs(struct iov_iter *iter, size_t maxsize,
>                 size += bytes;
>
>                 for ( ; bytes; idx++, bvec_idx++) {
> -                       struct bio_vec bv = {
> -                               .bv_page = pages[idx],
> -                               .bv_len = min_t(int, bytes, PAGE_SIZE - start),
> -                               .bv_offset = start,
> -                       };
> +                       struct bio_vec bv;
> +
> +                       bvec_set_page(&bv, pages[idx],

Hi Christoph,

There is trailing whitespace on this line which git complains about
and it made me take a second look.  I think bvec_set_page() allows to
make this more compact:

        for ( ; bytes; idx++, bvec_idx++) {
                int len = min_t(int, bytes, PAGE_SIZE - start);

                bvec_set_page(&bvecs[bvec_idx], pages[idx], len, start);
                bytes -= len;
                start = 0;
        }

Thanks,

                Ilya



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