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pid: use pid_has_task() in __change_pid()

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Replace hlist_empty() with the new pid_has_task() helper which is more
idiomatic, easier to grep for, and unifies how callers perform this
check.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20191017101832.5985-3-christian.brauner@ubuntu.com
This commit is contained in:
Christian Brauner 2019-10-17 12:18:30 +02:00
parent 67fc700016
commit 1d416a113f
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GPG Key ID: 91C61BC06578DCA2
1 changed files with 1 additions and 1 deletions
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kernel/pid.c
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@ -299,7 +299,7 @@ static void __change_pid(struct task_struct *task, enum pid_type type,
*pid_ptr = new;
for (tmp = PIDTYPE_MAX; --tmp >= 0; )
if (!hlist_empty(&pid->tasks[tmp]))
if (pid_has_task(pid, tmp))
return;
free_pid(pid);