From: Vasily Averin <vvs@virtuozzo.com>
Date: Fri, 13 Sep 2019 15:17:11 +0000 (+0300)
Subject: fuse: fix missing unlock_page in fuse_writepage()
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=d9768d068b4ee98932eb24205f39c60397d57571;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git

fuse: fix missing unlock_page in fuse_writepage()

commit d5880c7a8620290a6c90ced7a0e8bd0ad9419601 upstream.

unlock_page() was missing in case of an already in-flight write against the
same page.

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Fixes: ff17be086477 ("fuse: writepage: skip already in flight")
Cc: <stable@vger.kernel.org> # v3.13
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index ab93c4591f8c..e0ec8b80c873 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1706,6 +1706,7 @@ static int fuse_writepage(struct page *page, struct writeback_control *wbc)
 		WARN_ON(wbc->sync_mode == WB_SYNC_ALL);
 
 		redirty_page_for_writepage(wbc, page);
+		unlock_page(page);
 		return 0;
 	}