[PATCH 1/2] pidfd_create(): remove static qualifier and declare pidfd_create() in linux/pid.h

[Matthew Bobrowski <repnop@xxxxxxxxxx>]

With the idea to have fanotify(7) return pidfds within a `struct
fanotify_event_metadata`, pidfd_create()'s scope is to increased so
that it can be called from other subsystems within the Linux
kernel. The current `static` qualifier from its definition is to be
removed and a new function declaration for pidfd_create() is to be
added to the linux/pid.h header file.

Signed-off-by: Matthew Bobrowski <repnop@xxxxxxxxxx>
---
 include/linux/pid.h | 1 +
 kernel/pid.c        | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/pid.h b/include/linux/pid.h
index fa10acb8d6a4..af308e15f174 100644
--- a/include/linux/pid.h
+++ b/include/linux/pid.h
@@ -78,6 +78,7 @@ struct file;
 
 extern struct pid *pidfd_pid(const struct file *file);
 struct pid *pidfd_get_pid(unsigned int fd, unsigned int *flags);
+int pidfd_create(struct pid *pid, unsigned int flags);
 
 static inline struct pid *get_pid(struct pid *pid)
 {
diff --git a/kernel/pid.c b/kernel/pid.c
index ebdf9c60cd0b..91c4b6891c15 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -553,7 +553,7 @@ struct pid *pidfd_get_pid(unsigned int fd, unsigned int *flags)
  * Return: On success, a cloexec pidfd is returned.
  *         On error, a negative errno number will be returned.
  */
-static int pidfd_create(struct pid *pid, unsigned int flags)
+int pidfd_create(struct pid *pid, unsigned int flags)
 {
 	int fd;
 
-- 
2.31.1.368.gbe11c130af-goog

/M