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Date:   Mon, 19 Jun 2023 07:46:53 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@gmail.com>
To:     David Howells <dhowells@redhat.com>,
        Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Cc:     dhowells@redhat.com, netdev@vger.kernel.org,
        Alexander Duyck <alexander.duyck@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        David Ahern <dsahern@kernel.org>,
        Matthew Wilcox <willy@infradead.org>,
        Jens Axboe <axboe@kernel.dk>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, Keith Busch <kbusch@kernel.org>,
        Jens Axboe <axboe@fb.com>, Christoph Hellwig <hch@lst.de>,
        Sagi Grimberg <sagi@grimberg.me>,
        Chaitanya Kulkarni <kch@nvidia.com>,
        linux-nvme@lists.infradead.org
Message-ID: <6490402d8401a_37b5c7294c6@willemb.c.googlers.com.notmuch>
In-Reply-To: <755077.1687109321@warthog.procyon.org.uk>
References: <648f353c55ce8_33cfbc29413@willemb.c.googlers.com.notmuch>
 <20230617121146.716077-1-dhowells@redhat.com>
 <20230617121146.716077-11-dhowells@redhat.com>
 <755077.1687109321@warthog.procyon.org.uk>
Subject: Re: [PATCH net-next v2 10/17] nvme: Use sendmsg(MSG_SPLICE_PAGES)
 rather then sendpage
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David Howells wrote:
> Willem de Bruijn <willemdebruijn.kernel@gmail.com> wrote:
> 
> >     struct bio_vec bvec;
> >     struct msghdr msg = { .msg_flags = MSG_SPLICE_PAGES | ... };
> > 
> >     ..
> > 
> >     bvec_set_virt
> >     iov_iter_bvec
> >     sock_sendmsg
> > 
> > is a frequent pattern. Does it make sense to define a wrapper? Same for bvec_set_page.
> 
> I dunno.  I'm trying to move towards aggregating multiple pages in a bvec
> before calling sendmsg if possible rather than doing it one page at a time,
> but it's easier and more obvious in some places than others.

Ok. I just wanted to have your opinion. Fine to leave as is.

Acked-by: Willem de Bruijn <willemb@google.com>