#define ext4_debug(f, a...)                                            \
        do {                                                            \
                printk (KERN_DEBUG "EXT4-fs DEBUG (%s, %d): %s:",       \
-                       __FILE__, __LINE__, __FUNCTION__);              \
+                       __FILE__, __LINE__, __func__);                  \
                printk (KERN_DEBUG f, ## a);                            \
        } while (0)
 #else
 #define ext4_std_error(sb, errno)                              \
 do {                                                           \
        if ((errno))                                            \
-               __ext4_std_error((sb), __FUNCTION__, (errno));  \
+               __ext4_std_error((sb), __func__, (errno));      \
 } while (0)
 
 /*
 
                                handle_t *handle, struct buffer_head *bh);
 
 #define ext4_journal_get_undo_access(handle, bh) \
-       __ext4_journal_get_undo_access(__FUNCTION__, (handle), (bh))
+       __ext4_journal_get_undo_access(__func__, (handle), (bh))
 #define ext4_journal_get_write_access(handle, bh) \
-       __ext4_journal_get_write_access(__FUNCTION__, (handle), (bh))
+       __ext4_journal_get_write_access(__func__, (handle), (bh))
 #define ext4_journal_revoke(handle, blocknr, bh) \
-       __ext4_journal_revoke(__FUNCTION__, (handle), (blocknr), (bh))
+       __ext4_journal_revoke(__func__, (handle), (blocknr), (bh))
 #define ext4_journal_get_create_access(handle, bh) \
-       __ext4_journal_get_create_access(__FUNCTION__, (handle), (bh))
+       __ext4_journal_get_create_access(__func__, (handle), (bh))
 #define ext4_journal_dirty_metadata(handle, bh) \
-       __ext4_journal_dirty_metadata(__FUNCTION__, (handle), (bh))
+       __ext4_journal_dirty_metadata(__func__, (handle), (bh))
 #define ext4_journal_forget(handle, bh) \
-       __ext4_journal_forget(__FUNCTION__, (handle), (bh))
+       __ext4_journal_forget(__func__, (handle), (bh))
 
 int ext4_journal_dirty_data(handle_t *handle, struct buffer_head *bh);
 
 }
 
 #define ext4_journal_stop(handle) \
-       __ext4_journal_stop(__FUNCTION__, (handle))
+       __ext4_journal_stop(__func__, (handle))
 
 static inline handle_t *ext4_journal_current_handle(void)
 {