diff options
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 5630255d2e2a..228fdb5c01d1 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -1119,19 +1119,18 @@ kill_pg_info(int sig, struct siginfo *info, pid_t pgrp) int kill_pid_info(int sig, struct siginfo *info, struct pid *pid) { int error; - int acquired_tasklist_lock = 0; struct task_struct *p; rcu_read_lock(); - if (unlikely(sig_needs_tasklist(sig))) { + if (unlikely(sig_needs_tasklist(sig))) read_lock(&tasklist_lock); - acquired_tasklist_lock = 1; - } + p = pid_task(pid, PIDTYPE_PID); error = -ESRCH; if (p) error = group_send_sig_info(sig, info, p); - if (unlikely(acquired_tasklist_lock)) + + if (unlikely(sig_needs_tasklist(sig))) read_unlock(&tasklist_lock); rcu_read_unlock(); return error; @@ -2283,7 +2282,7 @@ static int do_tkill(int tgid, int pid, int sig) * @pid: the PID of the thread * @sig: signal to be sent * - * This syscall also checks the tgid and returns -ESRCH even if the PID + * This syscall also checks the @tgid and returns -ESRCH even if the PID * exists but it's not belonging to the target process anymore. This * method solves the problem of threads exiting and PIDs getting reused. */ |