diff options
| -rw-r--r-- | kernel/pid.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/pid.c b/kernel/pid.c index 047dc6264638..8147bdf22f36 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -183,15 +183,19 @@ static int alloc_pidmap(struct pid_namespace *pid_ns) break; } if (likely(atomic_read(&map->nr_free))) { - do { + for ( ; ; ) { if (!test_and_set_bit(offset, map->page)) { atomic_dec(&map->nr_free); set_last_pid(pid_ns, last, pid); return pid; } offset = find_next_offset(map, offset); + if (offset >= BITS_PER_PAGE) + break; pid = mk_pid(pid_ns, map, offset); - } while (offset < BITS_PER_PAGE && pid < pid_max); + if (pid >= pid_max) + break; + } } if (map < &pid_ns->pidmap[(pid_max-1)/BITS_PER_PAGE]) { ++map; |