Re: [PATCH v2 02/28] mm: Add functions to zero portions of a folio

[Christoph Hellwig]

On Mon, Nov 08, 2021 at 04:05:25AM +0000, Matthew Wilcox (Oracle) wrote:
> These functions are wrappers around zero_user_segments(), which means
> that zero_user_segments() can now be called for compound pages even when
> CONFIG_TRANSPARENT_HUGEPAGE is disabled.

Looks good,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

Related note: the inline !HIGHMEM version should switch to page_address
instead of kmap_local_page to make the code more obvious.