From b4bd326970bb65f375348312f3ebb799f3287ff0 Mon Sep 17 00:00:00 2001
From: Kirill Tkhai <ktkhai@virtuozzo.com>
Date: Thu, 19 Jul 2018 15:49:39 +0300
Subject: [PATCH] fuse: Add missed unlock_page() to fuse_readpages_fill()

commit 109728ccc5933151c68d1106e4065478a487a323 upstream.

The above error path returns with page unlocked, so this place seems also
to behave the same.

Fixes: f8dbdf81821b ("fuse: rework fuse_readpages()")
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/fuse/file.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index c4353da0591d..2ac8b9f3d806 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -868,6 +868,7 @@ static int fuse_readpages_fill(struct file *_data, struct page *page)
 	}
 
 	if (WARN_ON(req->num_pages >= req->max_pages)) {
+		unlock_page(page);
 		fuse_put_request(fc, req);
 		return -EIO;
 	}