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.