Kill indirect include of file.h from eventfd.h, use fdget() in cgroup.c
kernel/cgroup.c is the only place in the tree that relies on eventfd.h
pulling file.h; move that include there. Switch from eventfd_fget()/fput()
to fdget()/fdput(), while we are at it - eventfd_ctx_fileget() will fail
on non-eventfd descriptors just fine, no need to do that check twice...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/eventfd.h b/include/linux/eventfd.h
index cf5d2af61..ff0b981 100644
--- a/include/linux/eventfd.h
+++ b/include/linux/eventfd.h
@@ -9,7 +9,6 @@
#define _LINUX_EVENTFD_H
#include <linux/fcntl.h>
-#include <linux/file.h>
#include <linux/wait.h>
/*
@@ -26,6 +25,8 @@
#define EFD_SHARED_FCNTL_FLAGS (O_CLOEXEC | O_NONBLOCK)
#define EFD_FLAGS_SET (EFD_SHARED_FCNTL_FLAGS | EFD_SEMAPHORE)
+struct file;
+
#ifdef CONFIG_EVENTFD
struct file *eventfd_file_create(unsigned int count, int flags);