linux-kernel - Re: [PATCH net-next v4 03/15] ceph: Use sendmsg(MSG_SPLICE

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Message-ID: <2611115.1687549406@warthog.procyon.org.uk>
Date:   Fri, 23 Jun 2023 20:43:26 +0100
From:   David Howells <dhowells@...hat.com>
To:     Jakub Kicinski <kuba@...nel.org>,
        Ilya Dryomov <idryomov@...il.com>, Xiubo Li <xiubli@...hat.com>
Cc:     dhowells@...hat.com, netdev@...r.kernel.org,
        Alexander Duyck <alexander.duyck@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Willem de Bruijn <willemdebruijn.kernel@...il.com>,
        David Ahern <dsahern@...nel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Jens Axboe <axboe@...nel.dk>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Jeff Layton <jlayton@...nel.org>,
        ceph-devel@...r.kernel.org
Subject: Re: [PATCH net-next v4 03/15] ceph: Use sendmsg(MSG_SPLICE_PAGES) rather than sendpage

Jakub Kicinski <kuba@...nel.org> wrote:

> >  		if (length == cursor->total_resid)
> > -			more = MSG_MORE;
> > -		ret = ceph_tcp_sendpage(con->sock, page, page_offset, length,
> > -					more);
> > +			msghdr.msg_flags |= MSG_MORE;
> 
> Should the condition also be flipped here, like you did below?
> (can be a follow up if so)

Yeah - the "==" in the if-statement needs flipping to "!=".  I can send a
follow-up patch for it or respin if you prefer.

David