ptrace: s/tracehook_tracer_task()/ptrace_parent()/

tracehook.h is on the way out.  Rename tracehook_tracer_task() to
ptrace_parent() and move it from tracehook.h to ptrace.h.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: John Johansen <john.johansen@canonical.com>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>

2 files changed, 2 insertions, 2 deletions

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 9b45ee84fbcc..3a1dafd228d1 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -172,7 +172,7 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
                 task_tgid_nr_ns(rcu_dereference(p->real_parent), ns) : 0;
         tpid = 0;
         if (pid_alive(p)) {
-                struct task_struct *tracer = tracehook_tracer_task(p);
+                struct task_struct *tracer = ptrace_parent(p);
                 if (tracer)
                         tpid = task_pid_nr_ns(tracer, ns);
         }
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 14def991d9dd..c883dad74b9a 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -216,7 +216,7 @@ static struct mm_struct *__check_mem_permission(struct task_struct *task)
         if (task_is_stopped_or_traced(task)) {
                 int match;
                 rcu_read_lock();
-                match = (tracehook_tracer_task(task) == current);
+                match = (ptrace_parent(task) == current);
                 rcu_read_unlock();
                 if (match && ptrace_may_access(task, PTRACE_MODE_ATTACH))
                         return mm;