proc: Make the PROC_I() and PDE() macros internal to procfs

Make the PROC_I() and PDE() macros internal to procfs.  This means making
PDE_DATA() out of line.  This could be made more optimal by storing
PDE()->data into inode->i_private.

Also provide a __PDE_DATA() that is inline and internal to procfs.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 18 insertions, 0 deletions

diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index c529b5f16ee4..86a24060e1b9 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -84,6 +84,24 @@ struct proc_maps_private {
 
 void proc_init_inodecache(void);
 
+/*
+ * General functions
+ */
+static inline struct proc_inode *PROC_I(const struct inode *inode)
+{
+	return container_of(inode, struct proc_inode, vfs_inode);
+}
+
+static inline struct proc_dir_entry *PDE(const struct inode *inode)
+{
+	return PROC_I(inode)->pde;
+}
+
+static inline void *__PDE_DATA(const struct inode *inode)
+{
+	return PDE(inode)->data;
+}
+
 static inline struct pid *proc_pid(struct inode *inode)
 {
 	return PROC_I(inode)->pid;