From: Hannes Frederic Sowa <hannes@stressinduktion.org>
Date: Thu, 21 May 2015 15:00:01 +0000 (+0200)
Subject: net: af_unix: implement splice for stream af_unix sockets
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~163^2~229^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2b514574f7e88c8498027ee366fd6e7aae5aa4b5;p=pandora-kernel.git

net: af_unix: implement splice for stream af_unix sockets

unix_stream_recvmsg is refactored to unix_stream_read_generic in this
patch and enhanced to deal with pipe splicing. The refactoring is
inneglible, we mostly have to deal with a non-existing struct msghdr
argument.

Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/fs/splice.c b/fs/splice.c
index bfe62ae40f40..4f355a1c1a9e 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -261,6 +261,7 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(splice_to_pipe);
 
 void spd_release_page(struct splice_pipe_desc *spd, unsigned int i)
 {
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