Messages in this thread | | | From | Chaitanya Kulkarni <> | Subject | Re: [PATCH v11 4/9] block: add check when merging zone device pages | Date | Tue, 25 Oct 2022 01:16:25 +0000 |
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On 10/21/22 10:41, 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> > Reviewed-by: Christoph Hellwig <hch@lst.de> > Reviewed-by: John Hubbard <jhubbard@nvidia.com> > --- > block/bio.c | 2 ++ > include/linux/mmzone.h | 24 ++++++++++++++++++++++++ > 2 files changed, 26 insertions(+) >
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
-ck
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