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configfs: Convert subsystem semaphore to mutex

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Convert the su_sem member of struct configfs_subsystem to a struct
mutex, as that's what it is. Also convert all the users and update
Documentation/configfs.txt and Documentation/configfs_example.c
accordingly.

[ Conflict in fs/dlm/config.c with commit
  3168b0780d manually resolved. --Mark ]

Inspired-by: Satyam Sharma <ssatyam@cse.iitk.ac.in>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Joel Becker
2007-07-06 23:33:17 -07:00
committed by Mark Fasheh
parent 3fe6c5ce11
commit e6bd07aee7
6 changed files with 26 additions and 26 deletions
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10
fs/dlm/config.c
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@@ -607,7 +607,7 @@ static struct clusters clusters_root = {
int dlm_config_init(void)
{
config_group_init(&clusters_root.subsys.su_group);
init_MUTEX(&clusters_root.subsys.su_sem);
mutex_init(&clusters_root.subsys.su_mutex);
return configfs_register_subsystem(&clusters_root.subsys);
}
@@ -751,9 +751,9 @@ static struct space *get_space(char *name)
if (!space_list)
return NULL;
down(&space_list->cg_subsys->su_sem);
mutex_lock(&space_list->cg_subsys->su_mutex);
i = config_group_find_item(space_list, name);
up(&space_list->cg_subsys->su_sem);
mutex_unlock(&space_list->cg_subsys->su_mutex);
return to_space(i);
}
@@ -772,7 +772,7 @@ static struct comm *get_comm(int nodeid, struct sockaddr_storage *addr)
if (!comm_list)
return NULL;
down(&clusters_root.subsys.su_sem);
mutex_lock(&clusters_root.subsys.su_mutex);
list_for_each_entry(i, &comm_list->cg_children, ci_entry) {
cm = to_comm(i);
@@ -792,7 +792,7 @@ static struct comm *get_comm(int nodeid, struct sockaddr_storage *addr)
break;
}
}
up(&clusters_root.subsys.su_sem);
mutex_unlock(&clusters_root.subsys.su_mutex);
if (!found)
cm = NULL;