NTFS: Add some debugging checks to fs/ntfs/inode.c::ntfs_truncate() and fix

      a typo in fs/ntfs/layout.h.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

fs/ntfs/inode.c

@@ -2289,6 +2289,8 @@ void ntfs_truncate(struct inode *vi)
 	MFT_RECORD *m;
 	int err;
 
+	BUG_ON(NInoAttr(ni));
+	BUG_ON(ni->nr_extents < 0);
 	m = map_mft_record(ni);
 	if (IS_ERR(m)) {
 		ntfs_error(vi->i_sb, "Failed to map mft record for inode 0x%lx "

fs/ntfs/layout.h

@@ -260,7 +260,7 @@ typedef enum {
 enum {
 	MFT_RECORD_IN_USE	= const_cpu_to_le16(0x0001),
 	MFT_RECORD_IS_DIRECTORY = const_cpu_to_le16(0x0002),
-} __attrobite__ ((__packed__));
+} __attribute__ ((__packed__));
 
 typedef le16 MFT_RECORD_FLAGS;