From: Eric Dumazet <edumazet@google.com>
Date: Sat, 5 Jan 2013 21:31:18 +0000 (+0000)
Subject: net: splice: avoid high order page splitting
X-Git-Tag: v3.9-rc1~139^2~448
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9ca1b22d6d228177e6f929f6818a1cd3d5e30c4a;p=pandora-kernel.git

net: splice: avoid high order page splitting

splice() can handle pages of any order, but network code tries hard to
split them in PAGE_SIZE units. Not quite successfully anyway, as
__splice_segment() assumed poff < PAGE_SIZE. This is true for
the skb->data part, not necessarily for the fragments.

This patch removes this logic to give the pages as they are in the skb.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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