linux-kernel - [PATCH 3.16 075/328] fuse: Add missed unlock_page() to fuse_readpages

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Date:   Sun, 09 Dec 2018 21:50:33 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Kirill Tkhai" <ktkhai@...tuozzo.com>,
        "Miklos Szeredi" <mszeredi@...hat.com>
Subject: [PATCH 3.16 075/328] fuse: Add missed unlock_page() to
 fuse_readpages_fill()

3.16.62-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Kirill Tkhai <ktkhai@...tuozzo.com>

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@...tuozzo.com>
Signed-off-by: Miklos Szeredi <mszeredi@...hat.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 fs/fuse/file.c | 1 +
 1 file changed, 1 insertion(+)

--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -911,6 +911,7 @@ static int fuse_readpages_fill(void *_da
 	}
 
 	if (WARN_ON(req->num_pages >= req->max_pages)) {
+		unlock_page(page);
 		fuse_put_request(fc, req);
 		return -EIO;
 	}