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ipc: close open coded spin lock calls 

Signed-off-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Davidlohr Bueso 2013-07-08 16:01:11 -07:00 committed by Linus Torvalds
parent 1ca7003ab4
commit cf9d5d78d0
4 changed files with 12 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
ipc/msg.c
View File

@ -216,7 +216,7 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params)
INIT_LIST_HEAD(&msq->q_receivers);
INIT_LIST_HEAD(&msq->q_senders);
spin_unlock(&msq->q_perm.lock);
ipc_unlock_object(&msq->q_perm);
rcu_read_unlock();
return msq->q_perm.id;

14
ipc/sem.c
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@ -246,7 +246,7 @@ static inline int sem_lock(struct sem_array *sma, struct sembuf *sops,
* their critical section while the array lock is held.
*/
lock_array:
spin_lock(&sma->sem_perm.lock);
ipc_lock_object(&sma->sem_perm);
for (i = 0; i < sma->sem_nsems; i++) {
struct sem *sem = sma->sem_base + i;
spin_unlock_wait(&sem->lock);
@ -259,7 +259,7 @@ static inline int sem_lock(struct sem_array *sma, struct sembuf *sops,
static inline void sem_unlock(struct sem_array *sma, int locknum)
{
if (locknum == -1) {
spin_unlock(&sma->sem_perm.lock);
ipc_unlock_object(&sma->sem_perm);
} else {
struct sem *sem = sma->sem_base + locknum;
spin_unlock(&sem->lock);
@ -872,7 +872,7 @@ static void freeary(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp)
int i;
/* Free the existing undo structures for this semaphore set. */
assert_spin_locked(&sma->sem_perm.lock);
ipc_assert_locked_object(&sma->sem_perm);
list_for_each_entry_safe(un, tu, &sma->list_id, list_id) {
list_del(&un->list_id);
spin_lock(&un->ulp->lock);
@ -1070,7 +1070,7 @@ static int semctl_setval(struct ipc_namespace *ns, int semid, int semnum,
curr = &sma->sem_base[semnum];
assert_spin_locked(&sma->sem_perm.lock);
ipc_assert_locked_object(&sma->sem_perm);
list_for_each_entry(un, &sma->list_id, list_id)
un->semadj[semnum] = 0;
@ -1199,7 +1199,7 @@ static int semctl_main(struct ipc_namespace *ns, int semid, int semnum,
for (i = 0; i < nsems; i++)
sma->sem_base[i].semval = sem_io[i];
assert_spin_locked(&sma->sem_perm.lock);
ipc_assert_locked_object(&sma->sem_perm);
list_for_each_entry(un, &sma->list_id, list_id) {
for (i = 0; i < nsems; i++)
un->semadj[i] = 0;
@ -1496,7 +1496,7 @@ static struct sem_undo *find_alloc_undo(struct ipc_namespace *ns, int semid)
new->semid = semid;
assert_spin_locked(&ulp->lock);
list_add_rcu(&new->list_proc, &ulp->list_proc);
assert_spin_locked(&sma->sem_perm.lock);
ipc_assert_locked_object(&sma->sem_perm);
list_add(&new->list_id, &sma->list_id);
un = new;
@ -1833,7 +1833,7 @@ void exit_sem(struct task_struct *tsk)
}
/* remove un from the linked lists */
assert_spin_locked(&sma->sem_perm.lock);
ipc_assert_locked_object(&sma->sem_perm);
list_del(&un->list_id);
spin_lock(&ulp->lock);

4
ipc/shm.c
View File

@ -141,7 +141,7 @@ static inline struct shmid_kernel *shm_lock(struct ipc_namespace *ns, int id)
static inline void shm_lock_by_ptr(struct shmid_kernel *ipcp)
{
rcu_read_lock();
spin_lock(&ipcp->shm_perm.lock);
ipc_lock_object(&ipcp->shm_perm);
}
static inline struct shmid_kernel *shm_lock_check(struct ipc_namespace *ns,
@ -545,7 +545,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
ns->shm_tot += numpages;
error = shp->shm_perm.id;
spin_unlock(&shp->shm_perm.lock);
ipc_unlock_object(&shp->shm_perm);
rcu_read_unlock();
return error;

4
ipc/util.h
View File

@ -177,12 +177,12 @@ static inline void ipc_assert_locked_object(struct kern_ipc_perm *perm)
static inline void ipc_lock_by_ptr(struct kern_ipc_perm *perm)
{
rcu_read_lock();
spin_lock(&perm->lock);
ipc_lock_object(perm);
}
static inline void ipc_unlock(struct kern_ipc_perm *perm)
{
spin_unlock(&perm->lock);
ipc_unlock_object(perm);
rcu_read_unlock();
}