net: splice: avoid high order page splitting
authorEric Dumazet <edumazet@google.com>
Sat, 5 Jan 2013 21:31:18 +0000 (21:31 +0000)
committerDavid S. Miller <davem@davemloft.net>
Mon, 21 Jan 2013 04:19:35 +0000 (23:19 -0500)
commit82bda6195615891181115f579a480aa5001ce7e9
tree6eab0263d72c665460d64243afeb64905106b8fd
parentb74aa930ef49a3c0d8e4c1987f89decac768fb2c
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>
net/core/skbuff.c