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OpenCloudOS-Kernel
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drbd: Improve some function and variable naming 

Rename functions
conn_destroy() -> drbd_destroy_connection(),
drbd_minor_destroy() -> drbd_destroy_device()
drbd_adm_add_minor() -> drbd_adm_add_minor()
drbd_adm_delete_minor() -> drbd_adm_del_minor()

Rename global variable minors to drbd_devices

Signed-off-by: Andreas Gruenbacher <agruen@linbit.com>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
This commit is contained in:
Andreas Gruenbacher 2011-06-07 22:54:17 +02:00 committed by Philipp Reisner
parent a6b32bc3ce
commit 05a10ec790
8 changed files with 49 additions and 49 deletions
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8
drivers/block/drbd/drbd_int.h
View File

@ -166,7 +166,7 @@ drbd_insert_fault(struct drbd_device *device, unsigned int type) {
#define div_floor(A, B) ((A)/(B))
extern struct ratelimit_state drbd_ratelimit_state;
extern struct idr minors; /* RCU, updates: genl_lock() */
extern struct idr drbd_devices; /* RCU, updates: genl_lock() */
extern struct list_head drbd_connections; /* RCU, updates: genl_lock() */
extern const char *cmdname(enum drbd_packet cmd);
@ -771,7 +771,7 @@ struct drbd_device {
static inline struct drbd_device *minor_to_device(unsigned int minor)
{
return (struct drbd_device *)idr_find(&minors, minor);
return (struct drbd_device *)idr_find(&drbd_devices, minor);
}
static inline struct drbd_peer_device *first_peer_device(struct drbd_device *device)
@ -1175,11 +1175,11 @@ extern rwlock_t global_state_lock;
extern int conn_lowest_minor(struct drbd_connection *connection);
enum drbd_ret_code drbd_create_minor(struct drbd_connection *connection, unsigned int minor, int vnr);
extern void drbd_minor_destroy(struct kref *kref);
extern void drbd_destroy_device(struct kref *kref);
extern int set_resource_options(struct drbd_connection *connection, struct res_opts *res_opts);
extern struct drbd_connection *conn_create(const char *name, struct res_opts *res_opts);
extern void conn_destroy(struct kref *kref);
extern void drbd_destroy_connection(struct kref *kref);
struct drbd_connection *conn_get_by_name(const char *name);
extern struct drbd_connection *conn_get_by_addrs(void *my_addr, int my_addr_len,
void *peer_addr, int peer_addr_len);

32
drivers/block/drbd/drbd_main.c
View File

@ -117,7 +117,7 @@ module_param_string(usermode_helper, usermode_helper, sizeof(usermode_helper), 0
/* in 2.6.x, our device mapping and config info contains our virtual gendisks
* as member "struct gendisk *vdisk;"
*/
struct idr minors;
struct idr drbd_devices;
struct list_head drbd_connections; /* list of struct drbd_connection */
struct kmem_cache *drbd_request_cache;
@ -364,7 +364,7 @@ restart:
/* Release mod reference taken when thread was started */
kref_put(&connection->kref, &conn_destroy);
kref_put(&connection->kref, drbd_destroy_connection);
module_put(THIS_MODULE);
return retval;
}
@ -416,7 +416,7 @@ int drbd_thread_start(struct drbd_thread *thi)
if (IS_ERR(nt)) {
conn_err(connection, "Couldn't start thread\n");
kref_put(&connection->kref, &conn_destroy);
kref_put(&connection->kref, drbd_destroy_connection);
module_put(THIS_MODULE);
return false;
}
@ -2158,7 +2158,7 @@ static void drbd_release_all_peer_reqs(struct drbd_device *device)
}
/* caution. no locking. */
void drbd_minor_destroy(struct kref *kref)
void drbd_destroy_device(struct kref *kref)
{
struct drbd_device *device = container_of(kref, struct drbd_device, kref);
struct drbd_connection *connection = first_peer_device(device)->connection;
@ -2195,7 +2195,7 @@ void drbd_minor_destroy(struct kref *kref)
kfree(first_peer_device(device));
kfree(device);
kref_put(&connection->kref, &conn_destroy);
kref_put(&connection->kref, drbd_destroy_connection);
}
/* One global retry thread, if we need to push back some bio and have it
@ -2301,26 +2301,26 @@ static void drbd_cleanup(void)
drbd_genl_unregister();
idr_for_each_entry(&minors, device, i) {
idr_remove(&minors, device_to_minor(device));
idr_for_each_entry(&drbd_devices, device, i) {
idr_remove(&drbd_devices, device_to_minor(device));
idr_remove(&first_peer_device(device)->connection->volumes, device->vnr);
destroy_workqueue(device->submit.wq);
del_gendisk(device->vdisk);
/* synchronize_rcu(); No other threads running at this point */
kref_put(&device->kref, &drbd_minor_destroy);
kref_put(&device->kref, drbd_destroy_device);
}
/* not _rcu since, no other updater anymore. Genl already unregistered */
list_for_each_entry_safe(connection, tmp, &drbd_connections, connections) {
list_del(&connection->connections); /* not _rcu no proc, not other threads */
/* synchronize_rcu(); */
kref_put(&connection->kref, &conn_destroy);
kref_put(&connection->kref, drbd_destroy_connection);
}
drbd_destroy_mempools();
unregister_blkdev(DRBD_MAJOR, "drbd");
idr_destroy(&minors);
idr_destroy(&drbd_devices);
printk(KERN_INFO "drbd: module cleanup done.\n");
}
@ -2576,7 +2576,7 @@ fail:
return NULL;
}
void conn_destroy(struct kref *kref)
void drbd_destroy_connection(struct kref *kref)
{
struct drbd_connection *connection = container_of(kref, struct drbd_connection, kref);
@ -2688,7 +2688,7 @@ enum drbd_ret_code drbd_create_minor(struct drbd_connection *connection, unsigne
device->read_requests = RB_ROOT;
device->write_requests = RB_ROOT;
minor_got = idr_alloc(&minors, device, minor, minor + 1, GFP_KERNEL);
minor_got = idr_alloc(&drbd_devices, device, minor, minor + 1, GFP_KERNEL);
if (minor_got < 0) {
if (minor_got == -ENOSPC) {
err = ERR_MINOR_EXISTS;
@ -2725,7 +2725,7 @@ enum drbd_ret_code drbd_create_minor(struct drbd_connection *connection, unsigne
out_idr_remove_vol:
idr_remove(&connection->volumes, vnr_got);
out_idr_remove_minor:
idr_remove(&minors, minor_got);
idr_remove(&drbd_devices, minor_got);
synchronize_rcu();
out_no_minor_idr:
drbd_bm_cleanup(device);
@ -2736,7 +2736,7 @@ out_no_io_page:
out_no_disk:
blk_cleanup_queue(q);
out_no_q:
kref_put(&connection->kref, &conn_destroy);
kref_put(&connection->kref, drbd_destroy_connection);
out_no_peer_device:
kfree(device);
return err;
@ -2772,7 +2772,7 @@ int __init drbd_init(void)
init_waitqueue_head(&drbd_pp_wait);
drbd_proc = NULL; /* play safe for drbd_cleanup */
idr_init(&minors);
idr_init(&drbd_devices);
rwlock_init(&global_state_lock);
INIT_LIST_HEAD(&drbd_connections);
@ -2863,7 +2863,7 @@ void conn_md_sync(struct drbd_connection *connection)
kref_get(&device->kref);
rcu_read_unlock();
drbd_md_sync(device);
kref_put(&device->kref, &drbd_minor_destroy);
kref_put(&device->kref, drbd_destroy_device);
rcu_read_lock();
}
rcu_read_unlock();

32
drivers/block/drbd/drbd_nl.c
View File

@ -45,8 +45,8 @@
// int drbd_adm_create_resource(struct sk_buff *skb, struct genl_info *info);
// int drbd_adm_delete_resource(struct sk_buff *skb, struct genl_info *info);
int drbd_adm_add_minor(struct sk_buff *skb, struct genl_info *info);
int drbd_adm_delete_minor(struct sk_buff *skb, struct genl_info *info);
int drbd_adm_new_minor(struct sk_buff *skb, struct genl_info *info);
int drbd_adm_del_minor(struct sk_buff *skb, struct genl_info *info);
int drbd_adm_new_resource(struct sk_buff *skb, struct genl_info *info);
int drbd_adm_del_resource(struct sk_buff *skb, struct genl_info *info);
@ -274,7 +274,7 @@ fail:
static int drbd_adm_finish(struct genl_info *info, int retcode)
{
if (adm_ctx.connection) {
kref_put(&adm_ctx.connection->kref, &conn_destroy);
kref_put(&adm_ctx.connection->kref, drbd_destroy_connection);
adm_ctx.connection = NULL;
}
@ -517,7 +517,7 @@ static int _try_outdate_peer_async(void *data)
conn_try_outdate_peer(connection);
kref_put(&connection->kref, &conn_destroy);
kref_put(&connection->kref, drbd_destroy_connection);
return 0;
}
@ -529,7 +529,7 @@ void conn_try_outdate_peer_async(struct drbd_connection *connection)
opa = kthread_run(_try_outdate_peer_async, connection, "drbd_async_h");
if (IS_ERR(opa)) {
conn_err(connection, "out of mem, failed to invoke fence-peer helper\n");
kref_put(&connection->kref, &conn_destroy);
kref_put(&connection->kref, drbd_destroy_connection);
}
}
@ -2924,7 +2924,7 @@ static int get_one_status(struct sk_buff *skb, struct netlink_callback *cb)
* on each iteration.
*/
/* synchronize with conn_create()/conn_destroy() */
/* synchronize with conn_create()/drbd_destroy_connection() */
rcu_read_lock();
/* revalidate iterator position */
list_for_each_entry_rcu(tmp, &drbd_connections, connections) {
@ -3056,7 +3056,7 @@ int drbd_adm_get_status_all(struct sk_buff *skb, struct netlink_callback *cb)
if (!connection)
return -ENODEV;
kref_put(&connection->kref, &conn_destroy); /* get_one_status() (re)validates connection by itself */
kref_put(&connection->kref, drbd_destroy_connection); /* get_one_status() (re)validates connection by itself */
/* prime iterators, and set "filter" mode mark:
* only dump this connection. */
@ -3266,7 +3266,7 @@ out:
return 0;
}
int drbd_adm_add_minor(struct sk_buff *skb, struct genl_info *info)
int drbd_adm_new_minor(struct sk_buff *skb, struct genl_info *info)
{
struct drbd_genlmsghdr *dh = info->userhdr;
enum drbd_ret_code retcode;
@ -3303,7 +3303,7 @@ out:
return 0;
}
static enum drbd_ret_code adm_delete_minor(struct drbd_device *device)
static enum drbd_ret_code adm_del_minor(struct drbd_device *device)
{
if (device->state.disk == D_DISKLESS &&
/* no need to be device->state.conn == C_STANDALONE &&
@ -3313,17 +3313,17 @@ static enum drbd_ret_code adm_delete_minor(struct drbd_device *device)
_drbd_request_state(device, NS(conn, C_WF_REPORT_PARAMS),
CS_VERBOSE + CS_WAIT_COMPLETE);
idr_remove(&first_peer_device(device)->connection->volumes, device->vnr);
idr_remove(&minors, device_to_minor(device));
idr_remove(&drbd_devices, device_to_minor(device));
destroy_workqueue(device->submit.wq);
del_gendisk(device->vdisk);
synchronize_rcu();
kref_put(&device->kref, &drbd_minor_destroy);
kref_put(&device->kref, drbd_destroy_device);
return NO_ERROR;
} else
return ERR_MINOR_CONFIGURED;
}
int drbd_adm_delete_minor(struct sk_buff *skb, struct genl_info *info)
int drbd_adm_del_minor(struct sk_buff *skb, struct genl_info *info)
{
enum drbd_ret_code retcode;
@ -3333,7 +3333,7 @@ int drbd_adm_delete_minor(struct sk_buff *skb, struct genl_info *info)
if (retcode != NO_ERROR)
goto out;
retcode = adm_delete_minor(adm_ctx.device);
retcode = adm_del_minor(adm_ctx.device);
out:
drbd_adm_finish(info, retcode);
return 0;
@ -3389,7 +3389,7 @@ int drbd_adm_down(struct sk_buff *skb, struct genl_info *info)
/* delete volumes */
idr_for_each_entry(&adm_ctx.connection->volumes, device, i) {
retcode = adm_delete_minor(device);
retcode = adm_del_minor(device);
if (retcode != NO_ERROR) {
/* "can not happen" */
drbd_msg_put_info("failed to delete volume");
@ -3401,7 +3401,7 @@ int drbd_adm_down(struct sk_buff *skb, struct genl_info *info)
if (conn_lowest_minor(adm_ctx.connection) < 0) {
list_del_rcu(&adm_ctx.connection->connections);
synchronize_rcu();
kref_put(&adm_ctx.connection->kref, &conn_destroy);
kref_put(&adm_ctx.connection->kref, drbd_destroy_connection);
retcode = NO_ERROR;
} else {
@ -3428,7 +3428,7 @@ int drbd_adm_del_resource(struct sk_buff *skb, struct genl_info *info)
if (conn_lowest_minor(adm_ctx.connection) < 0) {
list_del_rcu(&adm_ctx.connection->connections);
synchronize_rcu();
kref_put(&adm_ctx.connection->kref, &conn_destroy);
kref_put(&adm_ctx.connection->kref, drbd_destroy_connection);
retcode = NO_ERROR;
} else {

2
drivers/block/drbd/drbd_proc.c
View File

@ -236,7 +236,7 @@ static int drbd_seq_show(struct seq_file *seq, void *v)
*/
rcu_read_lock();
idr_for_each_entry(&minors, device, i) {
idr_for_each_entry(&drbd_devices, device, i) {
if (prev_i != i - 1)
seq_printf(seq, "\n");
prev_i = i;

12
drivers/block/drbd/drbd_receiver.c
View File

@ -1058,7 +1058,7 @@ randomize:
clear_bit(DISCARD_MY_DATA, &device->flags);
drbd_connected(device);
kref_put(&device->kref, &drbd_minor_destroy);
kref_put(&device->kref, drbd_destroy_device);
rcu_read_lock();
}
rcu_read_unlock();
@ -1166,7 +1166,7 @@ static void drbd_flush(struct drbd_connection *connection)
drbd_bump_write_ordering(connection, WO_drain_io);
}
put_ldev(device);
kref_put(&device->kref, &drbd_minor_destroy);
kref_put(&device->kref, drbd_destroy_device);
rcu_read_lock();
if (rv)
@ -1409,7 +1409,7 @@ static void conn_wait_active_ee_empty(struct drbd_connection *connection)
kref_get(&device->kref);
rcu_read_unlock();
drbd_wait_ee_list_empty(device, &device->active_ee);
kref_put(&device->kref, &drbd_minor_destroy);
kref_put(&device->kref, drbd_destroy_device);
rcu_read_lock();
}
rcu_read_unlock();
@ -4459,7 +4459,7 @@ static void conn_disconnect(struct drbd_connection *connection)
kref_get(&device->kref);
rcu_read_unlock();
drbd_disconnected(device);
kref_put(&device->kref, &drbd_minor_destroy);
kref_put(&device->kref, &drbd_destroy_device);
rcu_read_lock();
}
rcu_read_unlock();
@ -5199,10 +5199,10 @@ static int connection_finish_peer_reqs(struct drbd_connection *connection)
kref_get(&device->kref);
rcu_read_unlock();
if (drbd_finish_peer_reqs(device)) {
kref_put(&device->kref, &drbd_minor_destroy);
kref_put(&device->kref, drbd_destroy_device);
return 1;
}
kref_put(&device->kref, &drbd_minor_destroy);
kref_put(&device->kref, drbd_destroy_device);
rcu_read_lock();
}
set_bit(SIGNAL_ASENDER, &connection->flags);

2
drivers/block/drbd/drbd_state.c
View File

@ -1574,7 +1574,7 @@ static int w_after_conn_state_ch(struct drbd_work *w, int unused)
spin_unlock_irq(&connection->req_lock);
}
}
kref_put(&connection->kref, &conn_destroy);
kref_put(&connection->kref, drbd_destroy_connection);
conn_md_sync(connection);

6
drivers/block/drbd/drbd_worker.c
View File

@ -1458,7 +1458,7 @@ static int _drbd_pause_after(struct drbd_device *device)
int i, rv = 0;
rcu_read_lock();
idr_for_each_entry(&minors, odev, i) {
idr_for_each_entry(&drbd_devices, odev, i) {
if (odev->state.conn == C_STANDALONE && odev->state.disk == D_DISKLESS)
continue;
if (!_drbd_may_sync_now(odev))
@ -1482,7 +1482,7 @@ static int _drbd_resume_next(struct drbd_device *device)
int i, rv = 0;
rcu_read_lock();
idr_for_each_entry(&minors, odev, i) {
idr_for_each_entry(&drbd_devices, odev, i) {
if (odev->state.conn == C_STANDALONE && odev->state.disk == D_DISKLESS)
continue;
if (odev->state.aftr_isp) {
@ -1939,7 +1939,7 @@ int drbd_worker(struct drbd_thread *thi)
kref_get(&device->kref);
rcu_read_unlock();
drbd_device_cleanup(device);
kref_put(&device->kref, &drbd_minor_destroy);
kref_put(&device->kref, drbd_destroy_device);
rcu_read_lock();
}
rcu_read_unlock();

4
include/linux/drbd_genl.h
View File

@ -276,9 +276,9 @@ GENL_op(
)
/* add DRBD minor devices as volumes to resources */
GENL_op(DRBD_ADM_NEW_MINOR, 5, GENL_doit(drbd_adm_add_minor),
GENL_op(DRBD_ADM_NEW_MINOR, 5, GENL_doit(drbd_adm_new_minor),
GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
GENL_op(DRBD_ADM_DEL_MINOR, 6, GENL_doit(drbd_adm_delete_minor),
GENL_op(DRBD_ADM_DEL_MINOR, 6, GENL_doit(drbd_adm_del_minor),
GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
/* add or delete resources */