From: Miklos Szeredi <mszeredi@xxxxxxxxxx>
This patch has been added to the 3.12 stable tree. If you have any
objections, please let us know.
===============
commit 2e38bea99a80eab408adee27f873a188d57b76cb upstream.
fuse_file_put() was missing the "force" flag for the RELEASE request when
sending synchronously (fuseblk).
If this flag is not set, then a sync request may be interrupted before it
is dequeued by the userspace filesystem. In this case the OPEN won't be
balanced with a RELEASE.
[js] force is a variable, not a bit
Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Fixes: 5a18ec176c93 ("fuse: fix hang of single threaded fuseblk filesystem")
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
fs/fuse/file.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index f6314cd3e3b0..75dee32d41b5 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -128,6 +128,7 @@ static void fuse_file_put(struct fuse_file *ff, bool sync)
struct fuse_req *req = ff->reserved_req;
if (sync) {
+ req->force = 1;
req->background = 0;
fuse_request_send(ff->fc, req);
path_put(&req->misc.release.path);
--
2.12.0