diff --git a/sys/fs/ext2fs/ext2_alloc.c b/sys/fs/ext2fs/ext2_alloc.c
index 3d07af55477e..5720c72a74a6 100644
--- a/sys/fs/ext2fs/ext2_alloc.c
+++ b/sys/fs/ext2fs/ext2_alloc.c
@@ -364,7 +364,7 @@ ext2_valloc(pvp, mode, cred, vpp)
 	 * ext2_dirpref else obtain it using ino_to_cg. The preferred inode is
 	 * always the next inode.
 	 */
-	if((mode & IFMT) == IFDIR) {
+	if ((mode & IFMT) == IFDIR) {
 		cg = ext2_dirpref(pip);
 		if (fs->e2fs_contigdirs[cg] < 255)
 			fs->e2fs_contigdirs[cg]++;
@@ -557,13 +557,13 @@ ext2_blkpref(ip, lbn, indx, bap, blocknr)
 	/* if the next block is actually what we thought it is,
 	   then set the goal to what we thought it should be
 	*/
-	if(ip->i_next_alloc_block == lbn && ip->i_next_alloc_goal != 0)
+	if (ip->i_next_alloc_block == lbn && ip->i_next_alloc_goal != 0)
 		return ip->i_next_alloc_goal;
 
 	/* now check whether we were provided with an array that basically
 	   tells us previous blocks to which we want to stay closeby
 	*/
-	if(bap) 
+	if (bap) 
                 for (tmp = indx - 1; tmp >= 0; tmp--) 
 			if (bap[tmp]) 
 				return bap[tmp];
diff --git a/sys/fs/ext2fs/ext2_balloc.c b/sys/fs/ext2fs/ext2_balloc.c
index 3fb19763d530..6e60c6e299b9 100644
--- a/sys/fs/ext2fs/ext2_balloc.c
+++ b/sys/fs/ext2fs/ext2_balloc.c
@@ -156,7 +156,7 @@ ext2_balloc(ip, lbn, size, cred, bpp, flags)
 	 */
 	pref = 0;
 	if ((error = ext2_getlbns(vp, lbn, indirs, &num)) != 0)
-		return(error);
+		return (error);
 #ifdef DIAGNOSTIC
 	if (num < 1)
 		panic ("ext2_balloc: ext2_getlbns returned indirect block");
diff --git a/sys/fs/ext2fs/ext2_bmap.c b/sys/fs/ext2fs/ext2_bmap.c
index c742188d479b..ba8eb632101d 100644
--- a/sys/fs/ext2fs/ext2_bmap.c
+++ b/sys/fs/ext2fs/ext2_bmap.c
@@ -215,7 +215,7 @@ ext2_bmaparray(vp, bn, bnp, runp, runb)
 			    ++bn, ++*runp);
 			bn = ap->in_off;
 			if (runb && bn) {
-				for(--bn; bn >= 0 && *runb < maxrun &&
+				for (--bn; bn >= 0 && *runb < maxrun &&
 			    		is_sequential(ump, ((int32_t *)bp->b_data)[bn],
 					    ((int32_t *)bp->b_data)[bn+1]);
 			    		--bn, ++*runb);
diff --git a/sys/fs/ext2fs/ext2_inode.c b/sys/fs/ext2fs/ext2_inode.c
index 2768c521c904..8d477b2a3547 100644
--- a/sys/fs/ext2fs/ext2_inode.c
+++ b/sys/fs/ext2fs/ext2_inode.c
@@ -229,7 +229,7 @@ ext2_truncate(vp, length, flags, cred, td)
 	 * will be returned to the free list.  lastiblock values are also
 	 * normalized to -1 for calls to ext2_indirtrunc below.
 	 */
-	bcopy((caddr_t)&oip->i_db[0], (caddr_t)oldblks, sizeof oldblks);
+	bcopy((caddr_t)&oip->i_db[0], (caddr_t)oldblks, sizeof(oldblks));
 	for (level = TRIPLE; level >= SINGLE; level--)
 		if (lastiblock[level] < 0) {
 			oip->i_ib[level] = 0;
@@ -246,8 +246,8 @@ ext2_truncate(vp, length, flags, cred, td)
 	 * Note that we save the new block configuration so we can check it
 	 * when we are done.
 	 */
-	bcopy((caddr_t)&oip->i_db[0], (caddr_t)newblks, sizeof newblks);
-	bcopy((caddr_t)oldblks, (caddr_t)&oip->i_db[0], sizeof oldblks);
+	bcopy((caddr_t)&oip->i_db[0], (caddr_t)newblks, sizeof(newblks));
+	bcopy((caddr_t)oldblks, (caddr_t)&oip->i_db[0], sizeof(oldblks));
 	oip->i_size = osize;
 	error = vtruncbuf(ovp, cred, td, length, (int)fs->e2fs_bsize);
 	if (error && (allerror == 0))
@@ -418,7 +418,7 @@ ext2_indirtrunc(ip, lbn, dbn, lastbn, level, countp)
 	copy = malloc(fs->e2fs_bsize, M_TEMP, M_WAITOK);
 	bcopy((caddr_t)bap, (caddr_t)copy, (u_int)fs->e2fs_bsize);
 	bzero((caddr_t)&bap[last + 1],
-	  (u_int)(NINDIR(fs) - (last + 1)) * sizeof (int32_t));
+	  (u_int)(NINDIR(fs) - (last + 1)) * sizeof(int32_t));
 	if (last == -1)
 		bp->b_flags |= B_INVAL;
 	error = bwrite(bp);
diff --git a/sys/fs/ext2fs/ext2_lookup.c b/sys/fs/ext2fs/ext2_lookup.c
index b293d7ff8bab..194cd3589e12 100644
--- a/sys/fs/ext2fs/ext2_lookup.c
+++ b/sys/fs/ext2fs/ext2_lookup.c
@@ -1002,7 +1002,7 @@ ext2_dirempty(ip, parentino, cred)
 	struct dirtemplate dbuf;
 	struct ext2fs_direct_2 *dp = (struct ext2fs_direct_2 *)&dbuf;
 	int error, count, namlen;
-#define	MINDIRSIZ (sizeof (struct dirtemplate) / 2)
+#define	MINDIRSIZ (sizeof(struct dirtemplate) / 2)
 
 	for (off = 0; off < ip->i_size; off += dp->e2d_reclen) {
 		error = vn_rdwr(UIO_READ, ITOV(ip), (caddr_t)dp, MINDIRSIZ,
@@ -1070,7 +1070,7 @@ ext2_checkpath(source, target, cred)
 			break;
 		}
 		error = vn_rdwr(UIO_READ, vp, (caddr_t)&dirbuf,
-			sizeof (struct dirtemplate), (off_t)0, UIO_SYSSPACE,
+			sizeof(struct dirtemplate), (off_t)0, UIO_SYSSPACE,
 			IO_NODELOCKED | IO_NOMACCHECK, cred, NOCRED, NULL,
 			NULL);
 		if (error != 0)
diff --git a/sys/fs/ext2fs/ext2_vfsops.c b/sys/fs/ext2fs/ext2_vfsops.c
index 9395f987ba13..8f7e8b8bb683 100644
--- a/sys/fs/ext2fs/ext2_vfsops.c
+++ b/sys/fs/ext2fs/ext2_vfsops.c
@@ -349,7 +349,7 @@ compute_sb_data(struct vnode *devvp, struct ext2fs *es,
 	}
 	fs->e2fs_ipb = fs->e2fs_bsize / EXT2_INODE_SIZE(fs);
 	fs->e2fs_itpg = fs->e2fs_ipg /fs->e2fs_ipb;
-	fs->e2fs_descpb = fs->e2fs_bsize / sizeof (struct ext2_gd);
+	fs->e2fs_descpb = fs->e2fs_bsize / sizeof(struct ext2_gd);
 	/* s_resuid / s_resgid ? */
 	fs->e2fs_gcount = (es->e2fs_bcount - es->e2fs_first_dblock +
 	    EXT2_BLOCKS_PER_GROUP(fs) - 1) / EXT2_BLOCKS_PER_GROUP(fs);
@@ -583,8 +583,7 @@ ext2_mountfs(struct vnode *devvp, struct mount *mp)
 			goto out;
 		}
 	}
-	ump = malloc(sizeof *ump, M_EXT2MNT, M_WAITOK);
-	bzero((caddr_t)ump, sizeof *ump);
+	ump = malloc(sizeof(*ump), M_EXT2MNT, M_WAITOK | M_ZERO);
 
 	/*
 	 * I don't know whether this is the right strategy. Note that
@@ -602,8 +601,8 @@ ext2_mountfs(struct vnode *devvp, struct mount *mp)
 
 	/*
 	 * Calculate the maximum contiguous blocks and size of cluster summary
-	 * array.  In FFS this is done by newfs; however the superblock in 
-	 * ext2fs doesn't have these variables so we just can calculate
+	 * array.  In FFS this is done by newfs; however, the superblock 
+	 * in ext2fs doesn't have these variables, so we can calculate 
 	 * them here.
 	 */
 	ump->um_e2fs->e2fs_maxcontig = MAX(1, MAXPHYS / ump->um_e2fs->e2fs_bsize);
@@ -978,7 +977,7 @@ ext2_vget(struct mount *mp, ino_t ino, int flags, struct vnode **vpp)
 	 */
 	if(S_ISDIR(ip->i_mode) || S_ISREG(ip->i_mode)) {
 		used_blocks = (ip->i_size+fs->e2fs_bsize-1) / fs->e2fs_bsize;
-		for(i = used_blocks; i < EXT2_NDIR_BLOCKS; i++)
+		for (i = used_blocks; i < EXT2_NDIR_BLOCKS; i++)
 			ip->i_db[i] = 0;
 	}
 /*
diff --git a/sys/fs/ext2fs/ext2_vnops.c b/sys/fs/ext2fs/ext2_vnops.c
index 7ec3e9d7a792..c357a2a85a52 100644
--- a/sys/fs/ext2fs/ext2_vnops.c
+++ b/sys/fs/ext2fs/ext2_vnops.c
@@ -1080,7 +1080,7 @@ ext2_rename(ap)
 			dp->i_nlink--;
 			dp->i_flag |= IN_CHANGE;
 			error = vn_rdwr(UIO_READ, fvp, (caddr_t)&dirbuf,
-				sizeof (struct dirtemplate), (off_t)0,
+				sizeof(struct dirtemplate), (off_t)0,
 				UIO_SYSSPACE, IO_NODELOCKED | IO_NOMACCHECK,
 				tcnp->cn_cred, NOCRED, NULL, NULL);
 			if (error == 0) {
@@ -1095,7 +1095,7 @@ ext2_rename(ap)
 					dirbuf.dotdot_ino = newparent;
 					(void) vn_rdwr(UIO_WRITE, fvp,
 					    (caddr_t)&dirbuf,
-					    sizeof (struct dirtemplate),
+					    sizeof(struct dirtemplate),
 					    (off_t)0, UIO_SYSSPACE,
 					    IO_NODELOCKED | IO_SYNC |
 					    IO_NOMACCHECK, tcnp->cn_cred,
@@ -1233,7 +1233,7 @@ ext2_mkdir(ap)
 #define DIRBLKSIZ  VTOI(dvp)->i_e2fs->e2fs_bsize
 	dirtemplate.dotdot_reclen = DIRBLKSIZ - 12;
 	error = vn_rdwr(UIO_WRITE, tvp, (caddr_t)&dirtemplate,
-	    sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE,
+	    sizeof(dirtemplate), (off_t)0, UIO_SYSSPACE,
 	    IO_NODELOCKED | IO_SYNC | IO_NOMACCHECK, cnp->cn_cred, NOCRED,
 	    NULL, NULL);
 	if (error) {
diff --git a/sys/fs/ext2fs/ext2fs.h b/sys/fs/ext2fs/ext2fs.h
index 7dc93dcc5e7b..b57d515d3537 100755
--- a/sys/fs/ext2fs/ext2fs.h
+++ b/sys/fs/ext2fs/ext2fs.h
@@ -34,8 +34,8 @@
  * 
  */
 
-#ifndef _FS_EXT2FS_EXT2_FS_H_
-#define _FS_EXT2FS_EXT2_FS_H_
+#ifndef _FS_EXT2FS_EXT2FS_H_
+#define _FS_EXT2FS_EXT2FS_H_
 
 #include <sys/types.h>
 
@@ -62,7 +62,7 @@
 #define	EXT2_DIND_BLOCK			(EXT2_IND_BLOCK + 1)
 #define	EXT2_TIND_BLOCK			(EXT2_DIND_BLOCK + 1)
 #define	EXT2_N_BLOCKS			(EXT2_TIND_BLOCK + 1)
-#define EXT2_MAXSYMLINKLEN		(EXT2_N_BLOCKS * sizeof (uint32_t))
+#define EXT2_MAXSYMLINKLEN		(EXT2_N_BLOCKS * sizeof(uint32_t))
 
 /*
  * The path name on which the file system is mounted is maintained
@@ -292,7 +292,7 @@ struct csum {
 #else
 # define EXT2_BLOCK_SIZE(s)		(EXT2_MIN_BLOCK_SIZE << (s)->e2fs_log_bsize)
 #endif
-#define	EXT2_ADDR_PER_BLOCK(s)		(EXT2_BLOCK_SIZE(s) / sizeof (uint32_t))
+#define	EXT2_ADDR_PER_BLOCK(s)		(EXT2_BLOCK_SIZE(s) / sizeof(uint32_t))
 #if defined(_KERNEL)
 # define EXT2_BLOCK_SIZE_BITS(s)	((s)->e2fs_blocksize_bits)
 #else
@@ -332,7 +332,7 @@ struct csum {
 # define EXT2_DESC_PER_BLOCK_BITS(s)	(EXT2_SB(s)->s_desc_per_block_bits)
 #else
 # define EXT2_BLOCKS_PER_GROUP(s)	((s)->e2fs_bpg)
-# define EXT2_DESC_PER_BLOCK(s)		(EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_gd))
+# define EXT2_DESC_PER_BLOCK(s)		(EXT2_BLOCK_SIZE(s) / sizeof(struct ext2_gd))
 
 #endif
 
diff --git a/sys/fs/ext2fs/fs.h b/sys/fs/ext2fs/fs.h
index 54c6b4408db5..880c500f5bc8 100644
--- a/sys/fs/ext2fs/fs.h
+++ b/sys/fs/ext2fs/fs.h
@@ -36,6 +36,9 @@
  * $FreeBSD$
  */
 
+#ifndef _FS_EXT2FS_FS_H_
+#define _FS_EXT2FS_FS_H_
+
 /*
  * Each disk drive contains some number of file systems.
  * A file system consists of a number of cylinder groups.
@@ -149,4 +152,4 @@
 extern int inside[], around[];
 extern u_char *fragtbl[];
 
-
+#endif /* !_FS_EXT2FS_FS_H_ */