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From: David Miller <>
Subject: Re: [PATCH v4 net-next 0/2] tcp: mmap: rework zerocopy receive
Date: Sun, 29 Apr 2018 21:34:17 -0400 (EDT)	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

From: Eric Dumazet <>
Date: Fri, 27 Apr 2018 08:58:07 -0700

> syzbot reported a lockdep issue caused by tcp mmap() support.
> I implemented Andy Lutomirski nice suggestions to resolve the
> issue and increase scalability as well.
> First patch is adding a new getsockopt() operation and changes mmap()
> behavior.
> Second patch changes tcp_mmap reference program.
> v4: tcp mmap() support depends on CONFIG_MMU, as kbuild bot told us.
> v3: change TCP_ZEROCOPY_RECEIVE to be a getsockopt() option
>     instead of setsockopt(), feedback from Ka-Cheon Poon
> v2: Added a missing page align of zc->length in tcp_zerocopy_receive()
>     Properly clear zc->recv_skip_hint in case user request was completed.

Looks great, series applied, thanks Eric.

      parent reply	other threads:[~2018-04-30  1:34 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-27 15:58 Eric Dumazet
2018-04-27 15:58 ` [PATCH v4 net-next 1/2] tcp: add TCP_ZEROCOPY_RECEIVE support for " Eric Dumazet
2018-04-27 15:58 ` [PATCH v4 net-next 2/2] selftests: net: tcp_mmap must use TCP_ZEROCOPY_RECEIVE Eric Dumazet
2018-04-30  1:34 ` David Miller [this message]

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