Messages in this thread | | | Date | Mon, 5 Sep 2022 16:34:05 +0200 | From | Christoph Hellwig <> | Subject | Re: [PATCH v9 3/8] block: add check when merging zone device pages |
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On Thu, Aug 25, 2022 at 09:24:20AM -0600, Logan Gunthorpe wrote: > Consecutive zone device pages should not be merged into the same sgl > or bvec segment with other types of pages or if they belong to different > pgmaps. Otherwise getting the pgmap of a given segment is not possible > without scanning the entire segment. This helper returns true either if > both pages are not zone device pages or both pages are zone device > pages with the same pgmap. > > Add a helper to determine if zone device pages are mergeable and use > this helper in page_is_mergeable(). > > Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Looks good:
Reviewed-by: Christoph Hellwig <hch@lst.de>
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