pid: use pid_has_task() in __change_pid()
authorChristian Brauner <christian.brauner@ubuntu.com>
Thu, 17 Oct 2019 10:18:30 +0000 (12:18 +0200)
committerChristian Brauner <christian.brauner@ubuntu.com>
Thu, 17 Oct 2019 13:36:56 +0000 (15:36 +0200)
commit1d416a113f0c0da7a3608ffe4d44bd8e9c4859fa
treed436aa01f63d87bf4a1f9c38b87198c64aef1358
parent67fc700016b75d6306b65d68edd2e5d76b2b1160
pid: use pid_has_task() in __change_pid()

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
kernel/pid.c