3.16.44-rc1 review patch. If anyone has any objections, please let me know.
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From: Miklos Szeredi <mszeredi@xxxxxxxxxx>
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.
Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Fixes: 5a18ec176c93 ("fuse: fix hang of single threaded fuseblk filesystem")
[bwh: Backported to 3.16:
- "force" flag is a bitfield
- Adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
fs/fuse/file.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -136,6 +136,7 @@ static void fuse_file_put(struct fuse_fi
path_put(&req->misc.release.path);
fuse_put_request(ff->fc, req);
} else if (sync) {
+ req->force = 1;
req->background = 0;
fuse_request_send(ff->fc, req);
path_put(&req->misc.release.path);