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>
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index ee6614bd..28e421c 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2149,7 +2149,7 @@
static int ext4_mb_seq_groups_open(struct inode *inode, struct file *file)
{
- struct super_block *sb = PDE(inode)->data;
+ struct super_block *sb = PDE_DATA(inode);
int rc;
rc = seq_open(file, &ext4_mb_seq_groups_ops);