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Commit 240ed68e authored by Sage Weil's avatar Sage Weil
Browse files

ceph: reuse mon subscribe message instead of allocated anew 



Use the same message, allocated during startup.  No need to reallocate a
new one each time around (and potentially ENOMEM).

Signed-off-by: default avatarSage Weil <sage@newdream.net>
parent 97069001

fs/ceph/mon_client.c

+13 −9
Original line number Diff line number Diff line
@@ -188,16 +188,12 @@ static void __send_subscribe(struct ceph_mon_client *monc) 
	     monc->want_next_osdmap);

	if ((__sub_expired(monc) && !monc->sub_sent) ||

	    monc->want_next_osdmap == 1) {

		struct ceph_msg *msg;

		struct ceph_msg *msg = monc->m_subscribe;

		struct ceph_mon_subscribe_item *i;

		void *p, *end;



		msg = ceph_msg_new(CEPH_MSG_MON_SUBSCRIBE, 96, GFP_NOFS);

		if (!msg)

			return;



		p = msg->front.iov_base;

		end = p + msg->front.iov_len;

		end = p + msg->front_max;



		dout("__send_subscribe to 'mdsmap' %u+\n",

		     (unsigned)monc->have_mdsmap);
@@ -227,7 +223,8 @@ static void __send_subscribe(struct ceph_mon_client *monc) 


		msg->front.iov_len = p - msg->front.iov_base;

		msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);

		ceph_con_send(monc->con, msg);

		ceph_con_revoke(monc->con, msg);

		ceph_con_send(monc->con, ceph_msg_get(msg));



		monc->sub_sent = jiffies | 1;  /* never 0 */

	}
@@ -631,7 +628,7 @@ int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl) 
		CEPH_ENTITY_TYPE_AUTH | CEPH_ENTITY_TYPE_MON |

		CEPH_ENTITY_TYPE_OSD | CEPH_ENTITY_TYPE_MDS;



	/* msg pools */

	/* msgs */

	err = -ENOMEM;

	monc->m_subscribe_ack = ceph_msg_new(CEPH_MSG_MON_SUBSCRIBE_ACK,

				     sizeof(struct ceph_mon_subscribe_ack),
@@ -639,9 +636,13 @@ int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl) 
	if (!monc->m_subscribe_ack)

		goto out_monmap;



	monc->m_subscribe = ceph_msg_new(CEPH_MSG_MON_SUBSCRIBE, 96, GFP_NOFS);

	if (!monc->m_subscribe)

		goto out_subscribe_ack;



	monc->m_auth_reply = ceph_msg_new(CEPH_MSG_AUTH_REPLY, 4096, GFP_NOFS);

	if (!monc->m_auth_reply)

		goto out_subscribe_ack;

		goto out_subscribe;



	monc->m_auth = ceph_msg_new(CEPH_MSG_AUTH, 4096, GFP_NOFS);

	monc->pending_auth = 0;
@@ -665,6 +666,8 @@ int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl) 


out_auth_reply:

	ceph_msg_put(monc->m_auth_reply);

out_subscribe:

	ceph_msg_put(monc->m_subscribe);

out_subscribe_ack:

	ceph_msg_put(monc->m_subscribe_ack);

out_monmap:
@@ -691,6 +694,7 @@ void ceph_monc_stop(struct ceph_mon_client *monc) 


	ceph_msg_put(monc->m_auth);

	ceph_msg_put(monc->m_auth_reply);

	ceph_msg_put(monc->m_subscribe);

	ceph_msg_put(monc->m_subscribe_ack);



	kfree(monc->monmap);

fs/ceph/mon_client.h

+1 −1
Original line number Diff line number Diff line
@@ -63,7 +63,7 @@ struct ceph_mon_client { 
	struct delayed_work delayed_work;



	struct ceph_auth_client *auth;

	struct ceph_msg *m_auth, *m_auth_reply, *m_subscribe_ack;

	struct ceph_msg *m_auth, *m_auth_reply, *m_subscribe, *m_subscribe_ack;

	int pending_auth;



	bool hunting;