Re: [PATCH v3 01/11] iomap: introduce IOMAP_F_ZERO_TAIL flag

[Christoph Hellwig]

> +++ b/fs/iomap/buffered-io.c
> @@ -837,6 +837,7 @@ static int __iomap_write_begin(const struct iomap_iter *iter,
>  			folio_zero_segments(folio, poff, from, to, poff + plen);
>  		} else {
>  			int status;
> +			const struct iomap *iomap = iomap_iter_srcmap(iter);

Please keep variables initialized at declaration time above those that
are not.

Otherwise looks good:

Reviewed-by: Christoph Hellwig <hch@xxxxxx>