From: Miklos Szeredi <mszeredi@suse.cz>
Date: Thu, 26 Feb 2015 10:45:47 +0000 (+0100)
Subject: fuse: set stolen page uptodate
X-Git-Tag: firefly_0821_release~3679^2~664
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=ce6f883465ceb83908bd2385fd91145a466f3715;p=firefly-linux-kernel-4.4.55.git

fuse: set stolen page uptodate

commit aa991b3b267e24f578bac7b09cc57579b660304b upstream.

Regular pipe buffers' ->steal method (generic_pipe_buf_steal()) doesn't set
PG_uptodate.

Don't warn on this condition, just set the uptodate flag.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 23bf1a52a5da..c46f29082bb9 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -819,8 +819,8 @@ static int fuse_try_move_page(struct fuse_copy_state *cs, struct page **pagep)
 
 	newpage = buf->page;
 
-	if (WARN_ON(!PageUptodate(newpage)))
-		return -EIO;
+	if (!PageUptodate(newpage))
+		SetPageUptodate(newpage);
 
 	ClearPageMappedToDisk(newpage);