From: Jakub Kicinski <kuba@kernel.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Ofir Gal <ofir.gal@volumez.com>,
davem@davemloft.net, linux-block@vger.kernel.org,
linux-nvme@lists.infradead.org, netdev@vger.kernel.org,
ceph-devel@vger.kernel.org, dhowells@redhat.com,
edumazet@google.com, pabeni@redhat.com, kbusch@kernel.org,
axboe@kernel.dk, sagi@grimberg.me, philipp.reisner@linbit.com,
lars.ellenberg@linbit.com, christoph.boehmwalder@linbit.com,
idryomov@gmail.com, xiubli@redhat.com
Subject: Re: [PATCH v2 0/4] bugfix: Introduce sendpages_ok() to check sendpage_ok() on contiguous pages
Date: Tue, 4 Jun 2024 07:42:24 -0700 [thread overview]
Message-ID: <20240604074224.44668dab@kernel.org> (raw)
In-Reply-To: <20240604043041.GA28886@lst.de>
On Tue, 4 Jun 2024 06:30:41 +0200 Christoph Hellwig wrote:
> On Sat, Jun 01, 2024 at 03:36:10PM -0700, Jakub Kicinski wrote:
> > On Fri, 31 May 2024 09:32:14 +0200 Christoph Hellwig wrote:
> > > I still find it hightly annoying that we can't have a helper that
> > > simply does the right thing for callers, but I guess this is the
> > > best thing we can get without a change of mind from the networking
> > > maintainers..
> >
> > Change mind about what? Did I miss a discussion?
>
> Having a net helper to just send some memory in the most efficient
> way and leave it up to the networking code to decide if it wants
> to use sendpage or sendmsg internally as needed instead of burdening
> the caller.
I'd guess the thinking was that if we push back the callers would
switch the relevant allocations to be page-backed. But we can add
a comment above the helper that says "you'd be better off using
page frags and calling sendmsg(MSG_SPLICE_PAGES) directly".
next prev parent reply other threads:[~2024-06-04 14:42 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-30 14:24 [PATCH v2 0/4] bugfix: Introduce sendpages_ok() to check sendpage_ok() on contiguous pages Ofir Gal
2024-05-30 14:24 ` [PATCH v2 1/4] net: introduce helper sendpages_ok() Ofir Gal
2024-05-31 7:32 ` Christoph Hellwig
2024-05-31 8:51 ` Sagi Grimberg
2024-06-03 12:35 ` Ofir Gal
2024-06-03 21:27 ` Sagi Grimberg
2024-06-04 4:27 ` Christoph Hellwig
2024-06-04 8:24 ` Sagi Grimberg
2024-06-04 13:01 ` Sagi Grimberg
2024-06-06 12:57 ` Ofir Gal
2024-06-06 13:08 ` Christoph Hellwig
2024-06-06 13:18 ` Ofir Gal
2024-06-06 13:52 ` Christoph Hellwig
2024-06-06 15:42 ` Ofir Gal
2024-05-30 14:24 ` [PATCH v2 2/4] nvme-tcp: use sendpages_ok() instead of sendpage_ok() Ofir Gal
2024-05-31 7:32 ` Christoph Hellwig
2024-05-30 14:24 ` [PATCH v2 3/4] drbd: " Ofir Gal
2024-06-04 14:43 ` Christoph Böhmwalder
2024-05-30 14:24 ` [PATCH v2 4/4] libceph: " Ofir Gal
2024-05-31 7:32 ` [PATCH v2 0/4] bugfix: Introduce sendpages_ok() to check sendpage_ok() on contiguous pages Christoph Hellwig
2024-06-01 22:36 ` Jakub Kicinski
2024-06-04 4:30 ` Christoph Hellwig
2024-06-04 14:42 ` Jakub Kicinski [this message]
2024-06-05 7:27 ` Christoph Hellwig
2024-06-01 22:34 ` Jakub Kicinski
2024-06-02 7:48 ` Sagi Grimberg
2024-06-03 9:07 ` Hannes Reinecke
2024-06-03 12:46 ` Ofir Gal
2024-06-03 7:24 ` Hannes Reinecke
2024-06-03 12:49 ` Ofir Gal
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