procfs: new helper - PDE_DATA(inode)

The only part of proc_dir_entry the code outside of fs/proc
really cares about is PDE(inode)->data.  Provide a helper
for that; static inline for now, eventually will be moved
to fs/proc, along with the knowledge of struct proc_dir_entry
layout.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 6 deletions

diff --git a/arch/powerpc/platforms/pseries/scanlog.c b/arch/powerpc/platforms/pseries/scanlog.c
index 47f3cda2a68b..cc220d2061b2 100644
--- a/arch/powerpc/platforms/pseries/scanlog.c
+++ b/arch/powerpc/platforms/pseries/scanlog.c
@@ -46,8 +46,7 @@ static struct proc_dir_entry *proc_ppc64_scan_log_dump;	/* The proc file */
 static ssize_t scanlog_read(struct file *file, char __user *buf,
                             size_t count, loff_t *ppos)
 {
-        struct proc_dir_entry *dp = PDE(file_inode(file));
-        unsigned int *data = (unsigned int *)dp->data;
+        unsigned int *data = PDE_DATA(file_inode(file));
         int status;
         unsigned long len, off;
         unsigned int wait_time;
@@ -135,8 +134,7 @@ static ssize_t scanlog_write(struct file * file, const char __user * buf,
 
 static int scanlog_open(struct inode * inode, struct file * file)
 {
-        struct proc_dir_entry *dp = PDE(inode);
-        unsigned int *data = (unsigned int *)dp->data;
+        unsigned int *data = PDE_DATA(file_inode(file));
 
         if (data[0] != 0) {
                 /* This imperfect test stops a second copy of the
@@ -152,8 +150,7 @@ static int scanlog_open(struct inode * inode, struct file * file)
 
 static int scanlog_release(struct inode * inode, struct file * file)
 {
-        struct proc_dir_entry *dp = PDE(inode);
-        unsigned int *data = (unsigned int *)dp->data;
+        unsigned int *data = PDE_DATA(file_inode(file));
 
         data[0] = 0;