linux-kernel - Re: [PATCH v3 02/10] fsdax: Factor helper: dax_fault

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Date:   Fri, 2 Apr 2021 09:47:20 +0200
From:   Christoph Hellwig <hch@....de>
To:     Shiyang Ruan <ruansy.fnst@...itsu.com>
Cc:     linux-kernel@...r.kernel.org, linux-xfs@...r.kernel.org,
        linux-nvdimm@...ts.01.org, linux-fsdevel@...r.kernel.org,
        darrick.wong@...cle.com, dan.j.williams@...el.com,
        willy@...radead.org, jack@...e.cz, viro@...iv.linux.org.uk,
        linux-btrfs@...r.kernel.org, ocfs2-devel@....oracle.com,
        david@...morbit.com, hch@....de, rgoldwyn@...e.de
Subject: Re: [PATCH v3 02/10] fsdax: Factor helper: dax_fault_actor()

> +		if (!pmd)
> +			return dax_load_hole(xas, mapping, &entry, vmf);
> +		else
> +			return dax_pmd_load_hole(xas, vmf, iomap, &entry);

> +	if (pmd)
> +		return vmf_insert_pfn_pmd(vmf, pfn, write);
> +	if (write)
> +		return vmf_insert_mixed_mkwrite(vmf->vma, vmf->address, pfn);
> +	else
> +		return vmf_insert_mixed(vmf->vma, vmf->address, pfn);
> +}

No need for else statements after returning.

Otherwise looks good:

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