Re: [PATCH v9 3/8] iomap: Don't get an reference on ZERO_PAGE for direct I/O block zeroing

[John Hubbard <jhubbard@xxxxxxxxxx>]

On 1/24/23 09:01, David Howells wrote:
> ZERO_PAGE can't go away, no need to hold an extra reference.
>
> Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
> Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
> ---
>   fs/iomap/direct-io.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: John Hubbard <jhubbard@xxxxxxxxxx>

thanks,
--
John Hubbard
NVIDIA

> diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c
> index 9804714b1751..47db4ead1e74 100644
> --- a/fs/iomap/direct-io.c
> +++ b/fs/iomap/direct-io.c
> @@ -202,7 +202,7 @@ static void iomap_dio_zero(const struct iomap_iter *iter, struct iomap_dio *dio,
>   	bio->bi_private = dio;
>   	bio->bi_end_io = iomap_dio_bio_end_io;
>   
> -	get_page(page);
> +	bio_set_flag(bio, BIO_NO_PAGE_REF);
>   	__bio_add_page(bio, page, len, 0);
>   	iomap_dio_submit_bio(iter, dio, bio, pos);
>   }