diff options
Diffstat (limited to 'kernel/pid.c')
| -rw-r--r-- | kernel/pid.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/pid.c b/kernel/pid.c index 58567d6904b2..aa2a7d4da455 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -43,6 +43,7 @@ #include <linux/sched/task.h> #include <linux/idr.h> #include <linux/pidfs.h> +#include <linux/seqlock.h> #include <net/sock.h> #include <uapi/linux/pidfd.h> @@ -103,6 +104,7 @@ EXPORT_SYMBOL_GPL(init_pid_ns); */ static __cacheline_aligned_in_smp DEFINE_SPINLOCK(pidmap_lock); +seqcount_spinlock_t pidmap_lock_seq = SEQCNT_SPINLOCK_ZERO(pidmap_lock_seq, &pidmap_lock); void put_pid(struct pid *pid) { @@ -273,9 +275,7 @@ struct pid *alloc_pid(struct pid_namespace *ns, pid_t *set_tid, spin_lock_irq(&pidmap_lock); if (!(ns->pid_allocated & PIDNS_ADDING)) goto out_unlock; - retval = pidfs_add_pid(pid); - if (retval) - goto out_unlock; + pidfs_add_pid(pid); for ( ; upid >= pid->numbers; --upid) { /* Make the PID visible to find_pid_ns. */ idr_replace(&upid->ns->idr, pid, upid->nr); |