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ipc: simplify rcu_read_lock() in semctl_nolock() 

This trivially combines two rcu_read_lock() calls in both sides of a
if-statement into one single one in front of the if-statement.

Split out as an independent cleanup from the previous commit.

Acked-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2013-05-04 11:04:29 -07:00
parent c728b9c87b
commit 941b0304a7
1 changed files with 1 additions and 2 deletions
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3
ipc/sem.c
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@ -948,8 +948,8 @@ static int semctl_nolock(struct ipc_namespace *ns, int semid,
memset(&tbuf, 0, sizeof(tbuf));
rcu_read_lock();
if (cmd == SEM_STAT) {
rcu_read_lock();
sma = sem_obtain_object(ns, semid);
if (IS_ERR(sma)) {
err = PTR_ERR(sma);
@ -957,7 +957,6 @@ static int semctl_nolock(struct ipc_namespace *ns, int semid,
}
id = sma->sem_perm.id;
} else {
rcu_read_lock();
sma = sem_obtain_object_check(ns, semid);
if (IS_ERR(sma)) {
err = PTR_ERR(sma);