This function was introduced by 150593b (sched/api: Introduce task_rcu_dereference() and try_get_task_struct()), to allow easier usage of task_rcu_dereference(), however no users were ever added. Drop the helper.
Cc: Oleg Nesterov <[email protected]> Signed-off-by: Davidlohr Bueso <[email protected]> --- include/linux/sched/task.h | 2 -- kernel/exit.c | 13 ------------- 2 files changed, 15 deletions(-) diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index a978d7189cfd..f0f065c5afcf 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -95,8 +95,6 @@ static inline void put_task_struct(struct task_struct *t) } struct task_struct *task_rcu_dereference(struct task_struct **ptask); -struct task_struct *try_get_task_struct(struct task_struct **ptask); - #ifdef CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT extern int arch_task_struct_size __read_mostly; diff --git a/kernel/exit.c b/kernel/exit.c index d0a34e1e4ec1..0479eb8b4985 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -317,19 +317,6 @@ void rcuwait_wake_up(struct rcuwait *w) rcu_read_unlock(); } -struct task_struct *try_get_task_struct(struct task_struct **ptask) -{ - struct task_struct *task; - - rcu_read_lock(); - task = task_rcu_dereference(ptask); - if (task) - get_task_struct(task); - rcu_read_unlock(); - - return task; -} - /* * Determine if a process group is "orphaned", according to the POSIX * definition in 2.2.2.52. Orphaned process groups are not to be affected -- 2.12.0
