new helper: file_inode(file)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/fat/file.c b/fs/fat/file.c
index a62e0ec..3978f8c 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -32,7 +32,7 @@
 
 static int fat_ioctl_set_attributes(struct file *file, u32 __user *user_attr)
 {
-	struct inode *inode = file->f_path.dentry->d_inode;
+	struct inode *inode = file_inode(file);
 	struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb);
 	int is_dir = S_ISDIR(inode->i_mode);
 	u32 attr, oldattr;
@@ -116,7 +116,7 @@
 
 long fat_generic_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
-	struct inode *inode = filp->f_path.dentry->d_inode;
+	struct inode *inode = file_inode(filp);
 	u32 __user *user_attr = (u32 __user *)arg;
 
 	switch (cmd) {