fs: Give dentry to inode_change_ok() instead of inode

inode_change_ok() will be resposible for clearing capabilities and IMA
extended attributes and as such will need dentry. Give it as an argument
to inode_change_ok() instead of an inode. Also rename inode_change_ok()
to setattr_prepare() to better relect that it does also some
modifications in addition to checks.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>

fs/proc/generic.c

@@ -105,7 +105,7 @@ static int proc_notify_change(struct dentry *dentry, struct iattr *iattr)
 	struct proc_dir_entry *de = PDE(inode);
 	int error;
 
-	error = inode_change_ok(inode, iattr);
+	error = setattr_prepare(dentry, iattr);
 	if (error)
 		return error;