diff -urN linux-2.4.22/fs/minix/itree_common.c linux/fs/minix/itree_common.c
--- linux-2.4.22/fs/minix/itree_common.c	Thu Oct 16 11:30:27 2003
+++ linux/fs/minix/itree_common.c	Mon Nov  3 12:25:20 2003
@@ -301,6 +301,12 @@
 	int first_whole;
 	long iblock;
 
+	if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
+	    S_ISLNK(inode->i_mode)))
+		return;
+	if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
+		return;
+
 	iblock = (inode->i_size + BLOCK_SIZE-1) >> 10;
 	block_truncate_page(inode->i_mapping, inode->i_size, get_block);