linux-kernel - [045/101] splice: direct_splice_actor() should not use pos in sd

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Message-Id: <20111102222743.846479604@clark.kroah.org>
Date:	Wed, 02 Nov 2011 15:26:29 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Changli Gao <xiaosuo@...il.com>,
	Miklos Szeredi <mszeredi@...e.cz>,
	Jens Axboe <jaxboe@...ionio.com>
Subject: [045/101] splice: direct_splice_actor() should not use pos in sd

2.6.33-longterm review patch.  If anyone has any objections, please let us know.

------------------

From: Changli Gao <xiaosuo@...il.com>

commit 2cb4b05e7647891b46b91c07c9a60304803d1688 upstream.

direct_splice_actor() shouldn't use sd->pos, as sd->pos is for file reading,
file->f_pos should be used instead.

Signed-off-by: Changli Gao <xiaosuo@...il.com>
Signed-off-by: Miklos Szeredi <mszeredi@...e.cz>
Signed-off-by: Jens Axboe <jaxboe@...ionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 fs/splice.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1231,7 +1231,8 @@ static int direct_splice_actor(struct pi
 {
 	struct file *file = sd->u.file;
 
-	return do_splice_from(pipe, file, &sd->pos, sd->total_len, sd->flags);
+	return do_splice_from(pipe, file, &file->f_pos, sd->total_len,
+			      sd->flags);
 }
 
 /**


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