From: "David S. Miller" <davem@redhat.com>
To: linux-kernel@vger.kernel.org
Subject: [UPDATE] Zerocopy, last one today I promise :-)
Date: Thu, 25 Jan 2001 06:16:45 -0800 (PST) [thread overview]
Message-ID: <14960.13645.936452.235135@pizda.ninka.net> (raw)
Ok, it's pretty fast, but due to a critical bug fix, there's a new
one going up:
ftp://ftp.kernel.org/pub/linux/kernel/people/davem/zerocopy-2.4.1p10-3.diff.gz
o If sock_writepage is called on path via device without SG support,
the cooked up sock_sendmsg() call needs to switch to KERNEL_DS.
Discovered and fixed by Ingo Molnar.
This does show that not too many people are testing this all that
thoroughly :-) Basically, any sys_sendfile() over TCP using a network
card other than loopback/3c59x/sunhme/acenic would fail with -EFAULT
or even worse a kernel crash depending upon architecture.
Later,
David S. Miller
davem@redhat.com
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next reply other threads:[~2001-01-25 14:18 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-25 14:16 David S. Miller [this message]
2001-01-25 14:52 ` Tobias Ringstrom
2001-01-25 15:23 ` David S. Miller
2001-01-25 15:40 ` Tigran Aivazian
2001-01-25 15:42 ` David S. Miller
2001-01-25 16:10 ` James H. Cloos Jr.
2001-01-25 16:40 ` David S. Miller
2001-01-25 17:02 ` Andi Kleen
2001-01-25 19:40 ` kuznet
2001-01-26 9:09 ` Chris Wedgwood
2001-01-25 23:19 ` Anton Blanchard
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