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Commit 81c65213 authored by Ilya Dryomov's avatar Ilya Dryomov
Browse files

libceph: assign cookies in linger_submit() 



Register lingers directly in linger_submit().  This avoids allocating
memory for notify pagelist while holding osdc->lock and simplifies both
callers of linger_submit().

Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
parent 3b83f60d

net/ceph/osd_client.c

+27 −21
Original line number Diff line number Diff line
@@ -2998,11 +2998,21 @@ static void linger_submit(struct ceph_osd_linger_request *lreq) 
	struct ceph_osd_client *osdc = lreq->osdc;

	struct ceph_osd *osd;



	down_write(&osdc->lock);

	linger_register(lreq);

	if (lreq->is_watch) {

		lreq->reg_req->r_ops[0].watch.cookie = lreq->linger_id;

		lreq->ping_req->r_ops[0].watch.cookie = lreq->linger_id;

	} else {

		lreq->reg_req->r_ops[0].notify.cookie = lreq->linger_id;

	}



	calc_target(osdc, &lreq->t, NULL, false);

	osd = lookup_create_osd(osdc, lreq->t.osd, true);

	link_linger(osd, lreq);



	send_linger(lreq);

	up_write(&osdc->lock);

}



static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq)
@@ -4523,15 +4533,14 @@ ceph_osdc_watch(struct ceph_osd_client *osdc, 
		goto err_put_lreq;

	}



	down_write(&osdc->lock);

	linger_register(lreq); /* before osd_req_op_* */

	osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id,

			      CEPH_OSD_WATCH_OP_WATCH);

	osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id,

			      CEPH_OSD_WATCH_OP_PING);

	linger_submit(lreq);

	up_write(&osdc->lock);

	/*

	 * Pass 0 for cookie because we don't know it yet, it will be

	 * filled in by linger_submit().

	 */

	osd_req_op_watch_init(lreq->reg_req, 0, 0, CEPH_OSD_WATCH_OP_WATCH);

	osd_req_op_watch_init(lreq->ping_req, 0, 0, CEPH_OSD_WATCH_OP_PING);



	linger_submit(lreq);

	ret = linger_reg_commit_wait(lreq);

	if (ret) {

		linger_cancel(lreq);
@@ -4728,29 +4737,26 @@ int ceph_osdc_notify(struct ceph_osd_client *osdc, 
		goto out_put_lreq;

	}



	/*

	 * Pass 0 for cookie because we don't know it yet, it will be

	 * filled in by linger_submit().

	 */

	ret = osd_req_op_notify_init(lreq->reg_req, 0, 0, 1, timeout,

				     payload, payload_len);

	if (ret)

		goto out_put_lreq;



	/* for notify_id */

	pages = ceph_alloc_page_vector(1, GFP_NOIO);

	if (IS_ERR(pages)) {

		ret = PTR_ERR(pages);

		goto out_put_lreq;

	}



	down_write(&osdc->lock);

	linger_register(lreq); /* before osd_req_op_* */

	ret = osd_req_op_notify_init(lreq->reg_req, 0, lreq->linger_id, 1,

				     timeout, payload, payload_len);

	if (ret) {

		linger_unregister(lreq);

		up_write(&osdc->lock);

		ceph_release_page_vector(pages, 1);

		goto out_put_lreq;

	}

	ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify,

						 response_data),

				 pages, PAGE_SIZE, 0, false, true);

	linger_submit(lreq);

	up_write(&osdc->lock);



	linger_submit(lreq);

	ret = linger_reg_commit_wait(lreq);

	if (!ret)

		ret = linger_notify_finish_wait(lreq);