Commit 1e6be9c1 authored Feb 22, 2017 by Miklos Szeredi Committed by Greg Kroah-Hartman Mar 12, 2017

fuse: add missing FR_FORCE



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@redhat.com>
Fixes: 5a18ec17 ("fuse: fix hang of single threaded fuseblk filesystem")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent abf74467

fs/fuse/file.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -100,6 +100,7 @@ static void fuse_file_put(struct fuse_file *ff, bool sync)
		iput(req->misc.release.inode);
		fuse_put_request(ff->fc, req);
		} else if (sync) {
		__set_bit(FR_FORCE, &req->flags);
		__clear_bit(FR_BACKGROUND, &req->flags);
		fuse_request_send(ff->fc, req);
		iput(req->misc.release.inode);