linux-kernel - Re: [PATCH 05/12] cifs: Pass a pointer to virt_to

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Date:   Wed, 17 May 2023 10:00:52 -0400
From:   Tom Talpey <tom@...pey.com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Vineet Gupta <vgupta@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Russell King <linux@...linux.org.uk>,
        Greg Ungerer <gerg@...ux-m68k.org>
Cc:     linux-kernel@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
        linux-snps-arc@...ts.infradead.org, linux-fsdevel@...r.kernel.org,
        linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org,
        linux-arm-kernel@...ts.infradead.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH 05/12] cifs: Pass a pointer to virt_to_page()

On 5/11/2023 7:59 AM, Linus Walleij wrote:
> Like the other calls in this function virt_to_page() expects
> a pointer, not an integer.
> 
> However since many architectures implement virt_to_pfn() as
> a macro, this function becomes polymorphic and accepts both a
> (unsigned long) and a (void *).
> 
> Fix this up with an explicit cast.
> 
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>

For fs/cifs:

Acked-by: Tom Talpey <tom@...pey.com>

> ---
>   fs/cifs/smbdirect.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c
> index 0362ebd4fa0f..964f07375a8d 100644
> --- a/fs/cifs/smbdirect.c
> +++ b/fs/cifs/smbdirect.c
> @@ -2500,7 +2500,7 @@ static ssize_t smb_extract_kvec_to_rdma(struct iov_iter *iter,
>   			if (is_vmalloc_or_module_addr((void *)kaddr))
>   				page = vmalloc_to_page((void *)kaddr);
>   			else
> -				page = virt_to_page(kaddr);
> +				page = virt_to_page((void *)kaddr);
>   
>   			if (!smb_set_sge(rdma, page, off, seg))
>   				return -EIO;
>