From: Tom Zanussi <zanussi@comcast.ne>
Date: Thu, 24 Apr 2008 10:52:20 +0000 (+0200)
Subject: relay: fix splice problem
X-Git-Tag: firefly_0821_release~20849^2~15
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c3270e577c18b3d0e984c3371493205a4807db9d;p=firefly-linux-kernel-4.4.55.git

relay: fix splice problem

Splice isn't always incrementing the ppos correctly, which broke
relay splice.

Signed-off-by: Tom Zanussi <zanussi@comcast.net>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

diff --git a/fs/splice.c b/fs/splice.c
index eeb1a86a7014..633f58ebfb72 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1075,7 +1075,7 @@ long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
 
 	ret = splice_direct_to_actor(in, &sd, direct_splice_actor);
 	if (ret > 0)
-		*ppos += ret;
+		*ppos = sd.pos;
 
 	return ret;
 }
diff --git a/kernel/relay.c b/kernel/relay.c
index d6204a485818..dc873fba90d2 100644
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -1162,7 +1162,7 @@ static ssize_t relay_file_splice_read(struct file *in,
 	ret = 0;
 	spliced = 0;
 
-	while (len) {
+	while (len && !spliced) {
 		ret = subbuf_splice_actor(in, ppos, pipe, len, flags, &nonpad_ret);
 		if (ret < 0)
 			break;