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Date: Wed, 21 Nov 2012 16:40:43 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
alan@...rguk.ukuu.org.uk, Alex Elder <elder@...tank.com>,
Yehuda Sadeh <yehuda@...tank.com>, Sage Weil <sage@...tank.com>
Subject: [ 097/171] libceph: embed ceph messenger structure in ceph_client
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Elder <elder@...tank.com>
(cherry picked from commit 15d9882c336db2db73ccf9871ae2398e452f694c)
A ceph client has a pointer to a ceph messenger structure in it.
There is always exactly one ceph messenger for a ceph client, so
there is no need to allocate it separate from the ceph client
structure.
Switch the ceph_client structure to embed its ceph_messenger
structure.
Signed-off-by: Alex Elder <elder@...tank.com>
Reviewed-by: Yehuda Sadeh <yehuda@...tank.com>
Reviewed-by: Sage Weil <sage@...tank.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
fs/ceph/mds_client.c | 2 +-
include/linux/ceph/libceph.h | 2 +-
include/linux/ceph/messenger.h | 9 +++++----
net/ceph/ceph_common.c | 18 +++++-------------
net/ceph/messenger.c | 30 +++++++++---------------------
net/ceph/mon_client.c | 6 +++---
net/ceph/osd_client.c | 4 ++--
7 files changed, 26 insertions(+), 45 deletions(-)
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -394,7 +394,7 @@ static struct ceph_mds_session *register
s->s_seq = 0;
mutex_init(&s->s_mutex);
- ceph_con_init(mdsc->fsc->client->msgr, &s->s_con);
+ ceph_con_init(&mdsc->fsc->client->msgr, &s->s_con);
s->s_con.private = s;
s->s_con.ops = &mds_con_ops;
s->s_con.peer_name.type = CEPH_ENTITY_TYPE_MDS;
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -132,7 +132,7 @@ struct ceph_client {
u32 supported_features;
u32 required_features;
- struct ceph_messenger *msgr; /* messenger instance */
+ struct ceph_messenger msgr; /* messenger instance */
struct ceph_mon_client monc;
struct ceph_osd_client osdc;
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -203,10 +203,11 @@ extern int ceph_msgr_init(void);
extern void ceph_msgr_exit(void);
extern void ceph_msgr_flush(void);
-extern struct ceph_messenger *ceph_messenger_create(
- struct ceph_entity_addr *myaddr,
- u32 features, u32 required);
-extern void ceph_messenger_destroy(struct ceph_messenger *);
+extern void ceph_messenger_init(struct ceph_messenger *msgr,
+ struct ceph_entity_addr *myaddr,
+ u32 supported_features,
+ u32 required_features,
+ bool nocrc);
extern void ceph_con_init(struct ceph_messenger *msgr,
struct ceph_connection *con);
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -468,19 +468,15 @@ struct ceph_client *ceph_create_client(s
/* msgr */
if (ceph_test_opt(client, MYIP))
myaddr = &client->options->my_addr;
- client->msgr = ceph_messenger_create(myaddr,
- client->supported_features,
- client->required_features);
- if (IS_ERR(client->msgr)) {
- err = PTR_ERR(client->msgr);
- goto fail;
- }
- client->msgr->nocrc = ceph_test_opt(client, NOCRC);
+ ceph_messenger_init(&client->msgr, myaddr,
+ client->supported_features,
+ client->required_features,
+ ceph_test_opt(client, NOCRC));
/* subsystems */
err = ceph_monc_init(&client->monc, client);
if (err < 0)
- goto fail_msgr;
+ goto fail;
err = ceph_osdc_init(&client->osdc, client);
if (err < 0)
goto fail_monc;
@@ -489,8 +485,6 @@ struct ceph_client *ceph_create_client(s
fail_monc:
ceph_monc_stop(&client->monc);
-fail_msgr:
- ceph_messenger_destroy(client->msgr);
fail:
kfree(client);
return ERR_PTR(err);
@@ -508,8 +502,6 @@ void ceph_destroy_client(struct ceph_cli
ceph_debugfs_client_cleanup(client);
- ceph_messenger_destroy(client->msgr);
-
ceph_destroy_options(client->options);
kfree(client);
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -2249,18 +2249,14 @@ out:
/*
- * create a new messenger instance
+ * initialize a new messenger instance
*/
-struct ceph_messenger *ceph_messenger_create(struct ceph_entity_addr *myaddr,
- u32 supported_features,
- u32 required_features)
+void ceph_messenger_init(struct ceph_messenger *msgr,
+ struct ceph_entity_addr *myaddr,
+ u32 supported_features,
+ u32 required_features,
+ bool nocrc)
{
- struct ceph_messenger *msgr;
-
- msgr = kzalloc(sizeof(*msgr), GFP_KERNEL);
- if (msgr == NULL)
- return ERR_PTR(-ENOMEM);
-
msgr->supported_features = supported_features;
msgr->required_features = required_features;
@@ -2273,19 +2269,11 @@ struct ceph_messenger *ceph_messenger_cr
msgr->inst.addr.type = 0;
get_random_bytes(&msgr->inst.addr.nonce, sizeof(msgr->inst.addr.nonce));
encode_my_addr(msgr);
+ msgr->nocrc = nocrc;
- dout("messenger_create %p\n", msgr);
- return msgr;
-}
-EXPORT_SYMBOL(ceph_messenger_create);
-
-void ceph_messenger_destroy(struct ceph_messenger *msgr)
-{
- dout("destroy %p\n", msgr);
- kfree(msgr);
- dout("destroyed messenger %p\n", msgr);
+ dout("%s %p\n", __func__, msgr);
}
-EXPORT_SYMBOL(ceph_messenger_destroy);
+EXPORT_SYMBOL(ceph_messenger_init);
static void clear_standby(struct ceph_connection *con)
{
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -763,7 +763,7 @@ int ceph_monc_init(struct ceph_mon_clien
monc->con = kmalloc(sizeof(*monc->con), GFP_KERNEL);
if (!monc->con)
goto out_monmap;
- ceph_con_init(monc->client->msgr, monc->con);
+ ceph_con_init(&monc->client->msgr, monc->con);
monc->con->private = monc;
monc->con->ops = &mon_con_ops;
@@ -888,8 +888,8 @@ static void handle_auth_reply(struct cep
} else if (!was_auth && monc->auth->ops->is_authenticated(monc->auth)) {
dout("authenticated, starting session\n");
- monc->client->msgr->inst.name.type = CEPH_ENTITY_TYPE_CLIENT;
- monc->client->msgr->inst.name.num =
+ monc->client->msgr.inst.name.type = CEPH_ENTITY_TYPE_CLIENT;
+ monc->client->msgr.inst.name.num =
cpu_to_le64(monc->auth->global_id);
__send_subscribe(monc);
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -639,7 +639,7 @@ static struct ceph_osd *create_osd(struc
INIT_LIST_HEAD(&osd->o_osd_lru);
osd->o_incarnation = 1;
- ceph_con_init(osdc->client->msgr, &osd->o_con);
+ ceph_con_init(&osdc->client->msgr, &osd->o_con);
osd->o_con.private = osd;
osd->o_con.ops = &osd_con_ops;
osd->o_con.peer_name.type = CEPH_ENTITY_TYPE_OSD;
@@ -1391,7 +1391,7 @@ void ceph_osdc_handle_map(struct ceph_os
epoch, maplen);
newmap = osdmap_apply_incremental(&p, next,
osdc->osdmap,
- osdc->client->msgr);
+ &osdc->client->msgr);
if (IS_ERR(newmap)) {
err = PTR_ERR(newmap);
goto bad;
--
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