pids: Compute task_tgid using signal->leader_pid
The cost is the the same and this removes the need
to worry about complications that come from de_thread
and group_leader changing.
__task_pid_nr_ns has been updated to take advantage of this change.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index a201fb0..b00a3f1 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -12,6 +12,7 @@
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/sched.h>
+#include <linux/sched/signal.h>
#include <linux/module.h>
#include <linux/compat.h>
#include <linux/swap.h>