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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-04 20:04:29 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-05 02:24:59 +0200 |
| commit | 941b0304a74b240c607ff098401fd4ef70c9d1cc (patch) | |
| tree | 92cb88d1851360c5e890b7daf737b264cf3181de /ipc | |
| parent | ipc: simplify semtimedop/semctl_main() common error path handling (diff) | |
| download | linux-941b0304a74b240c607ff098401fd4ef70c9d1cc.tar.xz linux-941b0304a74b240c607ff098401fd4ef70c9d1cc.zip | |
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>
Diffstat (limited to 'ipc')
| -rw-r--r-- | ipc/sem.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/ipc/sem.c b/ipc/sem.c index f2151babd26a..899b598b63be 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -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); |