Re: [PATCH 20/21] iomap: Support multi-page folios in invalidatepage

[Christoph Hellwig]

On Mon, Nov 01, 2021 at 08:39:28PM +0000, Matthew Wilcox (Oracle) wrote:
> If we're punching a hole in a multi-page folio, we need to remove the
> per-folio iomap data as the folio is about to be split and each page will
> need its own.  If a dirty folio is only partially-uptodate, the iomap
> data contains the information about which blocks cannot be written back,
> so assert that a dirty folio is fully uptodate.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>

Looks good,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>