linux-kernel - Re: [PATCH v4 01/23] lib/scatterlist: cleanup macros into static inline functions

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Message-ID: <20211221090003.GA7949@lst.de>
Date:   Tue, 21 Dec 2021 10:00:03 +0100
From:   Christoph Hellwig <hch@....de>
To:     Logan Gunthorpe <logang@...tatee.com>
Cc:     linux-kernel@...r.kernel.org, linux-nvme@...ts.infradead.org,
        linux-block@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-mm@...ck.org, iommu@...ts.linux-foundation.org,
        Stephen Bates <sbates@...thlin.com>,
        Christoph Hellwig <hch@....de>,
        Dan Williams <dan.j.williams@...el.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Christian König <christian.koenig@....com>,
        John Hubbard <jhubbard@...dia.com>,
        Don Dutile <ddutile@...hat.com>,
        Matthew Wilcox <willy@...radead.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Jakowski Andrzej <andrzej.jakowski@...el.com>,
        Minturn Dave B <dave.b.minturn@...el.com>,
        Jason Ekstrand <jason@...kstrand.net>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Xiong Jianxin <jianxin.xiong@...el.com>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Ira Weiny <ira.weiny@...el.com>,
        Robin Murphy <robin.murphy@....com>,
        Martin Oliveira <martin.oliveira@...eticom.com>,
        Chaitanya Kulkarni <ckulkarnilinux@...il.com>,
        Jason Gunthorpe <jgg@...dia.com>
Subject: Re: [PATCH v4 01/23] lib/scatterlist: cleanup macros into static
 inline functions

On Wed, Nov 17, 2021 at 02:53:48PM -0700, Logan Gunthorpe wrote:
> Convert the sg_is_chain(), sg_is_last() and sg_chain_ptr() macros
> into static inline functions. There's no reason for these to be macros
> and static inline are generally preferred these days.
> 
> Also introduce the SG_PAGE_LINK_MASK define so the P2PDMA work, which is
> adding another bit to this mask, can do so more easily.
> 
> Suggested-by: Jason Gunthorpe <jgg@...dia.com>
> Signed-off-by: Logan Gunthorpe <logang@...tatee.com>

Looks fine:

Reviewed-by: Christoph Hellwig <hch@....de>

scatterlist.h doesn't have a real maintainer, do you want me to pick
this up through the DMA tree?