Re: [PATCH v2 04/28] gup: Optimise compound_range_next()

[Christoph Hellwig]

On Mon, Jan 10, 2022 at 04:23:42AM +0000, Matthew Wilcox (Oracle) wrote:
> By definition, a compound page has an order >= 1, so the second half
> of the test was redundant.  Also, this cannot be a tail page since
> it's the result of calling compound_head(), so use PageHead() instead
> of PageCompound().
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>

Looks good,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>