Re: [PATCH v2 19/28] iomap: Convert __iomap_zero_iter to use a folio

[Christoph Hellwig]

On Mon, Nov 08, 2021 at 04:05:42AM +0000, Matthew Wilcox (Oracle) wrote:
> The zero iterator can work in folio-sized chunks instead of page-sized
> chunks.  This will save a lot of page cache lookups if the file is cached
> in multi-page folios.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>

Looks good:

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

but it will clash with my just sent series that decouples DAX
zeroing from buffered I/O zeroing and folds __iomap_zero_iter into
the caller.