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drbd: drbd_thread has now a pointer to a tconn instead of to a mdev 

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
hifive-unleashed-5.1
Philipp Reisner 2011-02-09 10:33:31 +01:00
parent 19393e105f
commit 392c880192
5 changed files with 29 additions and 32 deletions
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8
drivers/block/drbd/drbd_bitmap.c
View File

@ -119,9 +119,9 @@ static void __bm_print_lock_info(struct drbd_conf *mdev, const char *func)
if (!__ratelimit(&drbd_ratelimit_state))
return;
dev_err(DEV, "FIXME %s in %s, bitmap locked for '%s' by %s\n",
drbd_task_to_thread_name(mdev, current),
drbd_task_to_thread_name(mdev->tconn, current),
func, b->bm_why ?: "?",
drbd_task_to_thread_name(mdev, b->bm_task));
drbd_task_to_thread_name(mdev->tconn, b->bm_task));
}
void drbd_bm_lock(struct drbd_conf *mdev, char *why, enum bm_flag flags)
@ -138,9 +138,9 @@ void drbd_bm_lock(struct drbd_conf *mdev, char *why, enum bm_flag flags)
if (trylock_failed) {
dev_warn(DEV, "%s going to '%s' but bitmap already locked for '%s' by %s\n",
drbd_task_to_thread_name(mdev, current),
drbd_task_to_thread_name(mdev->tconn, current),
why, b->bm_why ?: "?",
drbd_task_to_thread_name(mdev, b->bm_task));
drbd_task_to_thread_name(mdev->tconn, b->bm_task));
mutex_lock(&b->bm_change);
}
if (BM_LOCKED_MASK & b->bm_flags)

4
drivers/block/drbd/drbd_int.h
View File

@ -625,7 +625,7 @@ struct drbd_thread {
struct completion stop;
enum drbd_thread_state t_state;
int (*function) (struct drbd_thread *);
struct drbd_conf *mdev;
struct drbd_tconn *tconn;
int reset_cpu_mask;
char name[9];
};
@ -1151,7 +1151,7 @@ enum dds_flags {
extern void drbd_init_set_defaults(struct drbd_conf *mdev);
extern int drbd_thread_start(struct drbd_thread *thi);
extern void _drbd_thread_stop(struct drbd_thread *thi, int restart, int wait);
extern char *drbd_task_to_thread_name(struct drbd_conf *mdev, struct task_struct *task);
extern char *drbd_task_to_thread_name(struct drbd_tconn *tconn, struct task_struct *task);
#ifdef CONFIG_SMP
extern void drbd_thread_current_set_cpu(struct drbd_thread *thi);
extern void drbd_calc_cpu_mask(struct drbd_tconn *tconn);

43
drivers/block/drbd/drbd_main.c
View File

@ -442,12 +442,12 @@ void tl_restart(struct drbd_conf *mdev, enum drbd_req_event what)
static int drbd_thread_setup(void *arg)
{
struct drbd_thread *thi = (struct drbd_thread *) arg;
struct drbd_conf *mdev = thi->mdev;
struct drbd_tconn *tconn = thi->tconn;
unsigned long flags;
int retval;
snprintf(current->comm, sizeof(current->comm), "drbd_%c_%s",
thi->name[0], thi->mdev->tconn->name);
thi->name[0], thi->tconn->name);
restart:
retval = thi->function(thi);
@ -465,7 +465,7 @@ restart:
*/
if (thi->t_state == RESTARTING) {
dev_info(DEV, "Restarting %s thread\n", thi->name);
conn_info(tconn, "Restarting %s thread\n", thi->name);
thi->t_state = RUNNING;
spin_unlock_irqrestore(&thi->t_lock, flags);
goto restart;
@ -477,27 +477,27 @@ restart:
complete(&thi->stop);
spin_unlock_irqrestore(&thi->t_lock, flags);
dev_info(DEV, "Terminating %s\n", current->comm);
conn_info(tconn, "Terminating %s\n", current->comm);
/* Release mod reference taken when thread was started */
module_put(THIS_MODULE);
return retval;
}
static void drbd_thread_init(struct drbd_conf *mdev, struct drbd_thread *thi,
static void drbd_thread_init(struct drbd_tconn *tconn, struct drbd_thread *thi,
int (*func) (struct drbd_thread *), char *name)
{
spin_lock_init(&thi->t_lock);
thi->task = NULL;
thi->t_state = NONE;
thi->function = func;
thi->mdev = mdev;
thi->tconn = tconn;
strncpy(thi->name, name, ARRAY_SIZE(thi->name));
}
int drbd_thread_start(struct drbd_thread *thi)
{
struct drbd_conf *mdev = thi->mdev;
struct drbd_tconn *tconn = thi->tconn;
struct task_struct *nt;
unsigned long flags;
@ -507,28 +507,27 @@ int drbd_thread_start(struct drbd_thread *thi)
switch (thi->t_state) {
case NONE:
dev_info(DEV, "Starting %s thread (from %s [%d])\n",
conn_info(tconn, "Starting %s thread (from %s [%d])\n",
thi->name, current->comm, current->pid);
/* Get ref on module for thread - this is released when thread exits */
if (!try_module_get(THIS_MODULE)) {
dev_err(DEV, "Failed to get module reference in drbd_thread_start\n");
conn_err(tconn, "Failed to get module reference in drbd_thread_start\n");
spin_unlock_irqrestore(&thi->t_lock, flags);
return false;
}
init_completion(&thi->stop);
D_ASSERT(thi->task == NULL);
thi->reset_cpu_mask = 1;
thi->t_state = RUNNING;
spin_unlock_irqrestore(&thi->t_lock, flags);
flush_signals(current); /* otherw. may get -ERESTARTNOINTR */
nt = kthread_create(drbd_thread_setup, (void *) thi,
"drbd%d_%s", mdev_to_minor(mdev), thi->name);
"drbd_%c_%s", thi->name[0], thi->tconn->name);
if (IS_ERR(nt)) {
dev_err(DEV, "Couldn't start thread\n");
conn_err(tconn, "Couldn't start thread\n");
module_put(THIS_MODULE);
return false;
@ -541,7 +540,7 @@ int drbd_thread_start(struct drbd_thread *thi)
break;
case EXITING:
thi->t_state = RESTARTING;
dev_info(DEV, "Restarting %s thread (from %s [%d])\n",
conn_info(tconn, "Restarting %s thread (from %s [%d])\n",
thi->name, current->comm, current->pid);
/* fall through */
case RUNNING:
@ -582,7 +581,6 @@ void _drbd_thread_stop(struct drbd_thread *thi, int restart, int wait)
init_completion(&thi->stop);
if (thi->task != current)
force_sig(DRBD_SIGKILL, thi->task);
}
spin_unlock_irqrestore(&thi->t_lock, flags);
@ -591,9 +589,8 @@ void _drbd_thread_stop(struct drbd_thread *thi, int restart, int wait)
wait_for_completion(&thi->stop);
}
static struct drbd_thread *drbd_task_to_thread(struct drbd_conf *mdev, struct task_struct *task)
static struct drbd_thread *drbd_task_to_thread(struct drbd_tconn *tconn, struct task_struct *task)
{
struct drbd_tconn *tconn = mdev->tconn;
struct drbd_thread *thi =
task == tconn->receiver.task ? &tconn->receiver :
task == tconn->asender.task ? &tconn->asender :
@ -602,9 +599,9 @@ static struct drbd_thread *drbd_task_to_thread(struct drbd_conf *mdev, struct ta
return thi;
}
char *drbd_task_to_thread_name(struct drbd_conf *mdev, struct task_struct *task)
char *drbd_task_to_thread_name(struct drbd_tconn *tconn, struct task_struct *task)
{
struct drbd_thread *thi = drbd_task_to_thread(mdev, task);
struct drbd_thread *thi = drbd_task_to_thread(tconn, task);
return thi ? thi->name : task->comm;
}
@ -656,7 +653,7 @@ void drbd_thread_current_set_cpu(struct drbd_thread *thi)
if (!thi->reset_cpu_mask)
return;
thi->reset_cpu_mask = 0;
set_cpus_allowed_ptr(p, thi->mdev->tconn->cpu_mask);
set_cpus_allowed_ptr(p, thi->tconn->cpu_mask);
}
#endif
@ -1866,10 +1863,6 @@ void drbd_init_set_defaults(struct drbd_conf *mdev)
init_waitqueue_head(&mdev->al_wait);
init_waitqueue_head(&mdev->seq_wait);
drbd_thread_init(mdev, &mdev->tconn->receiver, drbdd_init, "receiver");
drbd_thread_init(mdev, &mdev->tconn->worker, drbd_worker, "worker");
drbd_thread_init(mdev, &mdev->tconn->asender, drbd_asender, "asender");
/* mdev->tconn->agreed_pro_version gets initialized in drbd_connect() */
mdev->write_ordering = WO_bdev_flush;
mdev->resync_wenr = LC_FREE;
@ -2202,6 +2195,10 @@ struct drbd_tconn *drbd_new_tconn(char *name)
init_waitqueue_head(&tconn->net_cnt_wait);
idr_init(&tconn->volumes);
drbd_thread_init(tconn, &tconn->receiver, drbdd_init, "receiver");
drbd_thread_init(tconn, &tconn->worker, drbd_worker, "worker");
drbd_thread_init(tconn, &tconn->asender, drbd_asender, "asender");
write_lock_irq(&global_state_lock);
list_add(&tconn->all_tconn, &drbd_tconns);
write_unlock_irq(&global_state_lock);

4
drivers/block/drbd/drbd_receiver.c
View File

@ -4224,7 +4224,7 @@ static int drbd_do_auth(struct drbd_tconn *tconn)
int drbdd_init(struct drbd_thread *thi)
{
struct drbd_tconn *tconn = thi->mdev->tconn;
struct drbd_tconn *tconn = thi->tconn;
int h;
conn_info(tconn, "receiver (re)started\n");
@ -4591,7 +4591,7 @@ static int tconn_process_done_ee(struct drbd_tconn *tconn)
int drbd_asender(struct drbd_thread *thi)
{
struct drbd_tconn *tconn = thi->mdev->tconn;
struct drbd_tconn *tconn = thi->tconn;
struct p_header *h = &tconn->meta.rbuf.header;
struct asender_cmd *cmd = NULL;
struct packet_info pi;

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

@ -1643,7 +1643,7 @@ static int _worker_dying(int vnr, void *p, void *data)
int drbd_worker(struct drbd_thread *thi)
{
struct drbd_tconn *tconn = thi->mdev->tconn;
struct drbd_tconn *tconn = thi->tconn;
struct drbd_work *w = NULL;
LIST_HEAD(work_list);
int intr = 0;