MIME-Version: 1.0
References: <20230130092157.1759539-1-hch@lst.de> <20230130092157.1759539-23-hch@lst.de>
In-Reply-To: <20230130092157.1759539-23-hch@lst.de>
From:   Jason Wang <jasowang@redhat.com>
Date:   Tue, 31 Jan 2023 10:31:18 +0800
Message-ID: <CACGkMEsPvy5jVWA7AHJkyRKa8-xr9oi4DUAzBcU0pQ_n4rqCFA@mail.gmail.com>
Subject: Re: [PATCH 22/23] vring: use bvec_set_page to initialize a bvec
To:     Christoph Hellwig <hch@lst.de>
Cc:     Jens Axboe <axboe@kernel.dk>, Ilya Dryomov <idryomov@gmail.com>,
        "Michael S. Tsirkin" <mst@redhat.com>,
        Minchan Kim <minchan@kernel.org>,
        Sergey Senozhatsky <senozhatsky@chromium.org>,
        Keith Busch <kbusch@kernel.org>,
        Sagi Grimberg <sagi@grimberg.me>,
        Chaitanya Kulkarni <kch@nvidia.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        David Howells <dhowells@redhat.com>,
        Marc Dionne <marc.dionne@auristor.com>,
        Xiubo Li <xiubli@redhat.com>, Steve French <sfrench@samba.org>,
        Trond Myklebust <trond.myklebust@hammerspace.com>,
        Anna Schumaker <anna@kernel.org>,
        Mike Marshall <hubcap@omnibond.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Chuck Lever <chuck.lever@oracle.com>,
        linux-block@vger.kernel.org, ceph-devel@vger.kernel.org,
        virtualization@lists.linux-foundation.org,
        linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org,
        target-devel@vger.kernel.org, kvm@vger.kernel.org,
        netdev@vger.kernel.org, linux-afs@lists.infradead.org,
        linux-cifs@vger.kernel.org, samba-technical@lists.samba.org,
        linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org,
        devel@lists.orangefs.org, io-uring@vger.kernel.org,
        linux-mm@kvack.org
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Mon, Jan 30, 2023 at 5:23 PM Christoph Hellwig <hch@lst.de> wrote:
>
> Use the bvec_set_page helper to initialize a bvec.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>

A typo in the subject, should be "vringh".

Other than this

Acked-by: Jason Wang <jasowang@redhat.com>

Thanks

> ---
>  drivers/vhost/vringh.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c
> index 33eb941fcf1546..a1e27da544814a 100644
> --- a/drivers/vhost/vringh.c
> +++ b/drivers/vhost/vringh.c
> @@ -1126,9 +1126,8 @@ static int iotlb_translate(const struct vringh *vrh,
>                 size = map->size - addr + map->start;
>                 pa = map->addr + addr - map->start;
>                 pfn = pa >> PAGE_SHIFT;
> -               iov[ret].bv_page = pfn_to_page(pfn);
> -               iov[ret].bv_len = min(len - s, size);
> -               iov[ret].bv_offset = pa & (PAGE_SIZE - 1);
> +               bvec_set_page(&iov[ret], pfn_to_page(pfn), min(len - s, size),
> +                             pa & (PAGE_SIZE - 1));
>                 s += size;
>                 addr += size;
>                 ++ret;
> --
> 2.39.0
>