Index: sys/fs/ext2fs/ext2_csum.c
===================================================================
--- sys/fs/ext2fs/ext2_csum.c
+++ sys/fs/ext2fs/ext2_csum.c
@@ -535,12 +535,11 @@
 ext2_ei_csum(struct inode *ip, struct ext2fs_dinode *ei)
 {
 	struct m_ext2fs *fs;
-	uint16_t old_lo, old_hi;
+	uint16_t old_hi;
 	uint32_t inum, gen, crc;
 
 	fs = ip->i_e2fs;
 
-	old_lo = ei->e2di_chksum_lo;
 	ei->e2di_chksum_lo = 0;
 	if ((EXT2_INODE_SIZE(ip->i_e2fs) > E2FS_REV0_INODE_SIZE &&
 	    ei->e2di_extra_isize >= EXT2_INODE_CSUM_HI_EXTRA_END)) {
Index: sys/fs/ext2fs/ext2_extents.c
===================================================================
--- sys/fs/ext2fs/ext2_extents.c
+++ sys/fs/ext2fs/ext2_extents.c
@@ -125,10 +125,8 @@
 void
 ext4_ext_print_extent_tree_status(struct inode * ip)
 {
-	struct m_ext2fs *fs;
 	struct ext4_extent_header *ehp;
 
-	fs = ip->i_e2fs;
 	ehp = (struct ext4_extent_header *)(char *)ip->i_db;
 
 	printf("Extent status:ip=%d\n", ip->i_number);
@@ -882,7 +880,6 @@
 	struct m_ext2fs *fs;
 	struct ext4_extent_path *curpath;
 	struct ext4_extent_header *neh;
-	struct ext4_extent_index *fidx;
 	struct buf *bp;
 	e4fs_daddr_t newblk;
 	int error = 0;
@@ -925,7 +922,6 @@
 	ext4_index_store_pblock(curpath->ep_index, newblk);
 
 	neh = ext4_ext_inode_header(ip);
-	fidx = EXT_FIRST_INDEX(neh);
 	neh->eh_depth = path->ep_depth + 1;
 	ext4_ext_dirty(ip, curpath);
 out:
@@ -938,12 +934,9 @@
 ext4_ext_create_new_leaf(struct inode *ip, struct ext4_extent_path *path,
     struct ext4_extent *newext)
 {
-	struct m_ext2fs *fs;
 	struct ext4_extent_path *curpath;
 	int depth, i, error;
 
-	fs = ip->i_e2fs;
-
 repeat:
 	i = depth = ext4_ext_inode_depth(ip);
 
@@ -1033,13 +1026,11 @@
 ext4_ext_insert_extent(struct inode *ip, struct ext4_extent_path *path,
     struct ext4_extent *newext)
 {
-	struct m_ext2fs *fs;
 	struct ext4_extent_header * eh;
 	struct ext4_extent *ex, *nex, *nearex;
 	struct ext4_extent_path *npath;
 	int depth, len, error, next;
 
-	fs = ip->i_e2fs;
 	depth = ext4_ext_inode_depth(ip);
 	ex = path[depth].ep_ext;
 	npath = NULL;
@@ -1166,11 +1157,9 @@
     struct ucred *cred, unsigned long *count, int *perror)
 {
 	struct m_ext2fs *fs;
-	struct ext2mount *ump;
 	e4fs_daddr_t newblk;
 
 	fs = ip->i_e2fs;
-	ump = ip->i_ump;
 
 	/*
 	 * We will allocate only single block for now.
Index: sys/fs/ext2fs/ext2_lookup.c
===================================================================
--- sys/fs/ext2fs/ext2_lookup.c
+++ sys/fs/ext2fs/ext2_lookup.c
@@ -869,8 +869,8 @@
 	struct inode *dp;
 	struct ext2fs_direct_2 newdir;
 	struct buf *bp;
-	int error, newentrysize;
 	int DIRBLKSIZ = ip->i_e2fs->e2fs_bsize;
+	int error;
 
 
 #ifdef INVARIANTS
@@ -886,7 +886,6 @@
 	else
 		newdir.e2d_type = EXT2_FT_UNKNOWN;
 	bcopy(cnp->cn_nameptr, newdir.e2d_name, (unsigned)cnp->cn_namelen + 1);
-	newentrysize = EXT2_DIR_REC_LEN(newdir.e2d_namlen);
 
 	if (ext2_htree_has_idx(dp)) {
 		error = ext2_htree_add_entry(dvp, &newdir, cnp);