ceph: drop unnecessary msgpool for mon_client subscribe_ack

Preallocate a single message to reuse instead.

Signed-off-by: Sage Weil <sage@newdream.net>

diff --git a/fs/ceph/mon_client.c b/fs/ceph/mon_client.c
index 5a67732..5bee925 100644 (file)
--- a/fs/ceph/mon_client.c
+++ b/fs/ceph/mon_client.c
@@ -634,17 +634,21 @@ int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl)
                CEPH_ENTITY_TYPE_OSD | CEPH_ENTITY_TYPE_MDS;
 
        /* msg pools */
-       err = ceph_msgpool_init(&monc->msgpool_subscribe_ack,
-                              sizeof(struct ceph_mon_subscribe_ack), 1, false);
-       if (err < 0)
+       monc->m_subscribe_ack = ceph_msg_new(CEPH_MSG_MON_SUBSCRIBE_ACK,
+                                    sizeof(struct ceph_mon_subscribe_ack),
+                                    0, 0, NULL);
+       if (IS_ERR(monc->m_subscribe_ack)) {
+               err = PTR_ERR(monc->m_subscribe_ack);
+               monc->m_subscribe_ack = NULL;
                goto out_monmap;
+       }
 
        monc->m_auth_reply = ceph_msg_new(CEPH_MSG_AUTH_REPLY, 4096, 0, 0,
                                          NULL);
        if (IS_ERR(monc->m_auth_reply)) {
                err = PTR_ERR(monc->m_auth_reply);
                monc->m_auth_reply = NULL;
-               goto out_pool;
+               goto out_subscribe_ack;
        }
 
        monc->m_auth = ceph_msg_new(CEPH_MSG_AUTH, 4096, 0, 0, NULL);
@@ -672,8 +676,8 @@ int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl)
 
 out_auth_reply:
        ceph_msg_put(monc->m_auth_reply);
-out_pool:
-       ceph_msgpool_destroy(&monc->msgpool_subscribe_ack);
+out_subscribe_ack:
+       ceph_msg_put(monc->m_subscribe_ack);
 out_monmap:
        kfree(monc->monmap);
 out:
@@ -698,7 +702,7 @@ void ceph_monc_stop(struct ceph_mon_client *monc)
 
        ceph_msg_put(monc->m_auth);
        ceph_msg_put(monc->m_auth_reply);
-       ceph_msgpool_destroy(&monc->msgpool_subscribe_ack);
+       ceph_msg_put(monc->m_subscribe_ack);
 
        kfree(monc->monmap);
 }
@@ -815,7 +819,7 @@ static struct ceph_msg *mon_alloc_msg(struct ceph_connection *con,
 
        switch (type) {
        case CEPH_MSG_MON_SUBSCRIBE_ACK:
-               m = ceph_msgpool_get(&monc->msgpool_subscribe_ack, front_len);
+               m = ceph_msg_get(monc->m_subscribe_ack);
                break;
        case CEPH_MSG_STATFS_REPLY:
                return get_statfs_reply(con, hdr, skip);

diff --git a/fs/ceph/mon_client.h b/fs/ceph/mon_client.h
index 2658e3e..0046dee 100644 (file)
--- a/fs/ceph/mon_client.h
+++ b/fs/ceph/mon_client.h
@@ -6,7 +6,6 @@
 #include <linux/rbtree.h>
 
 #include "messenger.h"
-#include "msgpool.h"
 
 struct ceph_client;
 struct ceph_mount_args;
@@ -63,7 +62,7 @@ struct ceph_mon_client {
        struct delayed_work delayed_work;
 
        struct ceph_auth_client *auth;
-       struct ceph_msg *m_auth, *m_auth_reply;
+       struct ceph_msg *m_auth, *m_auth_reply, *m_subscribe_ack;
        int pending_auth;
 
        bool hunting;
@@ -72,9 +71,6 @@ struct ceph_mon_client {
        struct ceph_connection *con;
        bool have_fsid;
 
-       /* msgs */
-       struct ceph_msgpool msgpool_subscribe_ack;
-
        /* pending statfs requests */
        struct rb_root statfs_request_tree;
        int num_statfs_requests;