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exit: use pid_has_task() in do_wait()

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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/20191017101832.5985-4-christian.brauner@ubuntu.com
This commit is contained in:
Christian Brauner 2019-10-17 12:18:31 +02:00
parent 1d416a113f
commit 1722c14a20
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GPG key ID: 91C61BC06578DCA2
1 changed files with 1 additions and 1 deletions
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kernel/exit.c
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@ -1457,7 +1457,7 @@ repeat:
*/ */
wo->notask_error = -ECHILD; wo->notask_error = -ECHILD;
if ((wo->wo_type < PIDTYPE_MAX) && if ((wo->wo_type < PIDTYPE_MAX) &&
(!wo->wo_pid || hlist_empty(&wo->wo_pid->tasks[wo->wo_type]))) (!wo->wo_pid || !pid_has_task(wo->wo_pid, wo->wo_type)))
goto notask; goto notask;
set_current_state(TASK_INTERRUPTIBLE); set_current_state(TASK_INTERRUPTIBLE);