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Message-ID: <d23dce00-48ec-c319-c326-cb5a8e9410b2@nvidia.com>
Date:   Fri, 28 Jan 2022 09:26:11 +0000
From:   Chaitanya Kulkarni <chaitanyak@...dia.com>
To:     Logan Gunthorpe <logang@...tatee.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>
CC:     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>,
        Ralph Campbell <rcampbell@...dia.com>,
        Alex Sierra <alex.sierra@....com>,
        Theodore Ts'o <tytso@....edu>,
        "Darrick J . Wong" <djwong@...nel.org>
Subject: Re: [PATCH v5 01/24] ext4/xfs: add page refcount helper

On 1/27/22 4:25 PM, Logan Gunthorpe wrote:
> External email: Use caution opening links or attachments
> 
> 
> From: Ralph Campbell <rcampbell@...dia.com>
> 
> There are several places where ZONE_DEVICE struct pages assume a reference
> count == 1 means the page is idle and free. Instead of open coding this,
> add a helper function to hide this detail.
> 
> Signed-off-by: Ralph Campbell <rcampbell@...dia.com>
> Signed-off-by: Alex Sierra <alex.sierra@....com>
> Reviewed-by: Christoph Hellwig <hch@....de>
> Acked-by: Theodore Ts'o <tytso@....edu>
> Acked-by: Darrick J. Wong <djwong@...nel.org>
> ---

Looks good.

Reviewed-by: Chaitanya Kulkarni <kch@...dia.com>

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