4e181761ff
commit2f3d8ff457upstream. This may be a typo. The comment has said shared locks are not allowed when this bit is set. If using shared lock, the wait in `fuse_file_cached_io_open` may be forever. Fixes:205c1d8026("fuse: allow parallel dio writes with FUSE_DIRECT_IO_ALLOW_MMAP") CC: stable@vger.kernel.org # v6.9 Signed-off-by: yangyun <yangyun50@huawei.com> Reviewed-by: Bernd Schubert <bschubert@ddn.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>