inode_wq
wq = inode_wq(inode);
queue_work(ceph_inode_to_fs_client(inode)->inode_wq,
if (queue_work(fsc->inode_wq, &ci->i_work)) {
flush_workqueue(fsc->inode_wq);
fsc->inode_wq = alloc_workqueue("ceph-inode", WQ_UNBOUND, 0);
if (!fsc->inode_wq)
destroy_workqueue(fsc->inode_wq);
flush_workqueue(fsc->inode_wq);
destroy_workqueue(fsc->inode_wq);
struct workqueue_struct *inode_wq;