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Date:   Wed, 5 Jul 2023 21:03:51 +0100
From:   Matthew Wilcox <willy@infradead.org>
To:     Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc:     linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        akpm@linux-foundation.org
Subject: Re: [PATCH v2 2/4] mm/memory: convert wp_page_shared() to use folios
Message-ID: <ZKXMp84KxEvlsWKi@casper.infradead.org>
References: <20230705194335.273790-1-sidhartha.kumar@oracle.com>
 <20230705194335.273790-2-sidhartha.kumar@oracle.com>
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On Wed, Jul 05, 2023 at 12:43:33PM -0700, Sidhartha Kumar wrote:
> @@ -3375,7 +3375,7 @@ static vm_fault_t do_wp_page(struct vm_fault *vmf)
>  		 */
>  		if (!vmf->page)
>  			return wp_pfn_shared(vmf);
> -		return wp_page_shared(vmf);
> +		return wp_page_shared(vmf, page_folio(vmf->page));
>  	}
>  
>  	if (vmf->page)

I was actually hoping you'd move:

        if (vmf->page)
                folio = page_folio(vmf->page);

up to immediately after the call to vm_normal_page(), and avoid even
this call to page_folio().