[PATCH 17/26] drbd: Move resource options from connection to resource
From: Philipp Reisner
Date: Fri Dec 20 2013 - 07:47:08 EST
From: Andreas Gruenbacher <agruen@xxxxxxxxxx>
Signed-off-by: Andreas Gruenbacher <agruen@xxxxxxxxxx>
Signed-off-by: Philipp Reisner <philipp.reisner@xxxxxxxxxx>
---
drivers/block/drbd/drbd_int.h | 4 ++--
drivers/block/drbd/drbd_main.c | 33 +++++++++++++++++++--------------
drivers/block/drbd/drbd_nl.c | 8 +++-----
drivers/block/drbd/drbd_state.c | 2 +-
4 files changed, 25 insertions(+), 22 deletions(-)
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 1a1dd41..e1d6c53 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -537,6 +537,7 @@ struct drbd_resource {
struct idr devices; /* volume number to device mapping */
struct list_head connections;
struct list_head resources;
+ struct res_opts res_opts;
};
struct drbd_connection {
@@ -555,7 +556,6 @@ struct drbd_connection {
struct net_conf *net_conf; /* content protected by rcu */
struct mutex conf_update; /* mutex for ready-copy-update of net_conf and disk_conf */
wait_queue_head_t ping_wait; /* Woken upon reception of a ping, and a state change */
- struct res_opts res_opts;
struct sockaddr_storage my_addr;
int my_addr_len;
@@ -1203,7 +1203,7 @@ extern void drbd_delete_minor(struct drbd_device *mdev);
extern struct drbd_resource *drbd_create_resource(const char *name);
extern void drbd_free_resource(struct drbd_resource *resource);
-extern int set_resource_options(struct drbd_connection *connection, struct res_opts *res_opts);
+extern int set_resource_options(struct drbd_resource *resource, struct res_opts *res_opts);
extern struct drbd_connection *conn_create(const char *name, struct res_opts *res_opts);
extern void drbd_destroy_connection(struct kref *kref);
extern struct drbd_connection *conn_get_by_addrs(void *my_addr, int my_addr_len,
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index dd9fe7a..1792bc2 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2489,8 +2489,9 @@ void conn_free_crypto(struct drbd_connection *connection)
connection->int_dig_vv = NULL;
}
-int set_resource_options(struct drbd_connection *connection, struct res_opts *res_opts)
+int set_resource_options(struct drbd_resource *resource, struct res_opts *res_opts)
{
+ struct drbd_connection *connection;
cpumask_var_t new_cpu_mask;
int err;
@@ -2512,13 +2513,15 @@ int set_resource_options(struct drbd_connection *connection, struct res_opts *re
goto fail;
}
}
- connection->res_opts = *res_opts;
- if (!cpumask_equal(connection->cpu_mask, new_cpu_mask)) {
- cpumask_copy(connection->cpu_mask, new_cpu_mask);
- drbd_calc_cpu_mask(connection);
- connection->receiver.reset_cpu_mask = 1;
- connection->asender.reset_cpu_mask = 1;
- connection->worker.reset_cpu_mask = 1;
+ resource->res_opts = *res_opts;
+ for_each_connection_rcu(connection, resource) {
+ if (!cpumask_equal(connection->cpu_mask, new_cpu_mask)) {
+ cpumask_copy(connection->cpu_mask, new_cpu_mask);
+ drbd_calc_cpu_mask(connection);
+ connection->receiver.reset_cpu_mask = 1;
+ connection->asender.reset_cpu_mask = 1;
+ connection->worker.reset_cpu_mask = 1;
+ }
}
err = 0;
@@ -2565,9 +2568,6 @@ struct drbd_connection *conn_create(const char *name, struct res_opts *res_opts)
if (!zalloc_cpumask_var(&connection->cpu_mask, GFP_KERNEL))
goto fail;
- if (set_resource_options(connection, res_opts))
- goto fail;
-
connection->current_epoch = kzalloc(sizeof(struct drbd_epoch), GFP_KERNEL);
if (!connection->current_epoch)
goto fail;
@@ -2604,19 +2604,24 @@ struct drbd_connection *conn_create(const char *name, struct res_opts *res_opts)
kref_init(&connection->kref);
- kref_get(&resource->kref);
connection->resource = resource;
- list_add_tail_rcu(&connection->connections, &resource->connections);
+ if (set_resource_options(resource, res_opts))
+ goto fail_resource;
+
+ kref_get(&resource->kref);
+ list_add_tail_rcu(&connection->connections, &resource->connections);
return connection;
+fail_resource:
+ list_del(&resource->resources);
+ drbd_free_resource(resource);
fail:
kfree(connection->current_epoch);
free_cpumask_var(connection->cpu_mask);
drbd_free_socket(&connection->meta);
drbd_free_socket(&connection->data);
kfree(connection);
-
return NULL;
}
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index e804487..2153afd 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -2520,7 +2520,6 @@ int drbd_adm_resize(struct sk_buff *skb, struct genl_info *info)
int drbd_adm_resource_opts(struct sk_buff *skb, struct genl_info *info)
{
enum drbd_ret_code retcode;
- struct drbd_connection *connection;
struct res_opts res_opts;
int err;
@@ -2529,9 +2528,8 @@ int drbd_adm_resource_opts(struct sk_buff *skb, struct genl_info *info)
return retcode;
if (retcode != NO_ERROR)
goto fail;
- connection = adm_ctx.connection;
- res_opts = connection->res_opts;
+ res_opts = adm_ctx.resource->res_opts;
if (should_set_defaults(info))
set_res_opts_defaults(&res_opts);
@@ -2542,7 +2540,7 @@ int drbd_adm_resource_opts(struct sk_buff *skb, struct genl_info *info)
goto fail;
}
- err = set_resource_options(connection, &res_opts);
+ err = set_resource_options(adm_ctx.resource, &res_opts);
if (err) {
retcode = ERR_INVALID_REQUEST;
if (err == -ENOMEM)
@@ -2802,7 +2800,7 @@ int nla_put_status_info(struct sk_buff *skb, struct drbd_device *device,
if (nla_put_drbd_cfg_context(skb, first_peer_device(device)->connection, device->vnr))
goto nla_put_failure;
- if (res_opts_to_skb(skb, &first_peer_device(device)->connection->res_opts, exclude_sensitive))
+ if (res_opts_to_skb(skb, &device->resource->res_opts, exclude_sensitive))
goto nla_put_failure;
rcu_read_lock();
diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c
index cf6b475..516992d 100644
--- a/drivers/block/drbd/drbd_state.c
+++ b/drivers/block/drbd/drbd_state.c
@@ -874,7 +874,7 @@ static union drbd_state sanitize_state(struct drbd_device *device, union drbd_st
(ns.role == R_PRIMARY && ns.conn < C_CONNECTED && ns.pdsk > D_OUTDATED))
ns.susp_fen = 1; /* Suspend IO while fence-peer handler runs (peer lost) */
- if (first_peer_device(device)->connection->res_opts.on_no_data == OND_SUSPEND_IO &&
+ if (device->resource->res_opts.on_no_data == OND_SUSPEND_IO &&
(ns.role == R_PRIMARY && ns.disk < D_UP_TO_DATE && ns.pdsk < D_UP_TO_DATE))
ns.susp_nod = 1; /* Suspend IO while no data available (no accessible data available) */
--
1.7.9.5
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