(gdb) p ((struct ll_inode_info*)0xffff880231233b38)->lli_clob
$1 = (struct cl_object *) 0x0
(gdb) p
#0 0xffffffffa0590d3e in cl_object_top ()
#1 0xffffffffa05a186d in cl_io_init ()
#2 0xffffffffa0a78145 in cl_sync_file_range ()
#3 0xffffffffa0a7b241 in ll_fsync ()
#4 0xffffffff811a5891 in vfs_fsync_range (file=0xffff880230732d40,
dentry=0xffff880243d48b40, start=<value optimized out>,
end=<value optimized out>, datasync=<value optimized out>) at fs/sync.c:260
#5 0xffffffff811a593d in vfs_fsync (file=<value optimized out>,
dentry=<value optimized out>, datasync=<value optimized out>)
at fs/sync.c:285
#6 0xffffffff811a597e in do_fsync (fd=<value optimized out>, datasync=1)
at fs/sync.c:296
#7 0xffffffff811a59b3 in sys_fdatasync (fd=<value optimized out>)
at fs/sync.c:309