diff --git a/release/alpha/dokern.sh b/release/alpha/dokern.sh
index 2a6a53d4984f..e072eaf4b556 100755
--- a/release/alpha/dokern.sh
+++ b/release/alpha/dokern.sh
@@ -7,6 +7,7 @@ sed	\
 	-e '/DEC_3000_300/d' \
 	-e '/DEC_3000_500/d' \
 	-e '/SOFTUPDATES/d' \
+	-e '/UFS_DIRHASH/d' \
 	-e '/MFS/d' \
 	-e '/NFSSERVER/d' \
 	-e '/NFS_ROOT/d' \
diff --git a/release/amd64/dokern.sh b/release/amd64/dokern.sh
index cdde563b4330..901f0c628425 100755
--- a/release/amd64/dokern.sh
+++ b/release/amd64/dokern.sh
@@ -49,6 +49,7 @@ sed	-e '/	pci$/d' \
 	-e '/KTRACE/d' \
 	-e '/SYSV/d' \
 	-e '/SOFTUPDATES/d' \
+	-e '/UFS_DIRHASH/d' \
 	-e '/MFS/d' \
 	-e '/NFSSERVER/d' \
 	-e '/NFS_ROOT/d' \
@@ -85,6 +86,7 @@ sed	-e '/pty/d' \
 	-e '/KTRACE/d' \
 	-e '/SYSV/d' \
 	-e '/SOFTUPDATES/d' \
+	-e '/UFS_DIRHASH/d' \
 	-e '/MFS/d' \
 	-e '/NFSSERVER/d' \
 	-e '/NFS_ROOT/d' \
diff --git a/release/i386/dokern.sh b/release/i386/dokern.sh
index cdde563b4330..901f0c628425 100755
--- a/release/i386/dokern.sh
+++ b/release/i386/dokern.sh
@@ -49,6 +49,7 @@ sed	-e '/	pci$/d' \
 	-e '/KTRACE/d' \
 	-e '/SYSV/d' \
 	-e '/SOFTUPDATES/d' \
+	-e '/UFS_DIRHASH/d' \
 	-e '/MFS/d' \
 	-e '/NFSSERVER/d' \
 	-e '/NFS_ROOT/d' \
@@ -85,6 +86,7 @@ sed	-e '/pty/d' \
 	-e '/KTRACE/d' \
 	-e '/SYSV/d' \
 	-e '/SOFTUPDATES/d' \
+	-e '/UFS_DIRHASH/d' \
 	-e '/MFS/d' \
 	-e '/NFSSERVER/d' \
 	-e '/NFS_ROOT/d' \
diff --git a/release/pc98/dokern.sh b/release/pc98/dokern.sh
index cdde563b4330..901f0c628425 100755
--- a/release/pc98/dokern.sh
+++ b/release/pc98/dokern.sh
@@ -49,6 +49,7 @@ sed	-e '/	pci$/d' \
 	-e '/KTRACE/d' \
 	-e '/SYSV/d' \
 	-e '/SOFTUPDATES/d' \
+	-e '/UFS_DIRHASH/d' \
 	-e '/MFS/d' \
 	-e '/NFSSERVER/d' \
 	-e '/NFS_ROOT/d' \
@@ -85,6 +86,7 @@ sed	-e '/pty/d' \
 	-e '/KTRACE/d' \
 	-e '/SYSV/d' \
 	-e '/SOFTUPDATES/d' \
+	-e '/UFS_DIRHASH/d' \
 	-e '/MFS/d' \
 	-e '/NFSSERVER/d' \
 	-e '/NFS_ROOT/d' \
diff --git a/sys/alpha/conf/GENERIC b/sys/alpha/conf/GENERIC
index efcfcaae6f7c..3eb8b97f37d2 100644
--- a/sys/alpha/conf/GENERIC
+++ b/sys/alpha/conf/GENERIC
@@ -52,6 +52,7 @@ options 	INET			#InterNETworking
 options 	INET6			#IPv6 communications protocols
 options 	FFS			#Berkeley Fast Filesystem
 options 	SOFTUPDATES		#Enable FFS soft updates support
+options 	UFS_DIRHASH		#Improve performance on big directories
 options 	MD_ROOT			#MD is a potential root device
 options 	NFSCLIENT		#Network Filesystem Client
 options 	NFSSERVER		#Network Filesystem Server
diff --git a/sys/alpha/conf/NOTES b/sys/alpha/conf/NOTES
index efcfcaae6f7c..3eb8b97f37d2 100644
--- a/sys/alpha/conf/NOTES
+++ b/sys/alpha/conf/NOTES
@@ -52,6 +52,7 @@ options 	INET			#InterNETworking
 options 	INET6			#IPv6 communications protocols
 options 	FFS			#Berkeley Fast Filesystem
 options 	SOFTUPDATES		#Enable FFS soft updates support
+options 	UFS_DIRHASH		#Improve performance on big directories
 options 	MD_ROOT			#MD is a potential root device
 options 	NFSCLIENT		#Network Filesystem Client
 options 	NFSSERVER		#Network Filesystem Server
diff --git a/sys/amd64/conf/GENERIC b/sys/amd64/conf/GENERIC
index 269b210475ef..f062d27aa81f 100644
--- a/sys/amd64/conf/GENERIC
+++ b/sys/amd64/conf/GENERIC
@@ -33,6 +33,7 @@ options 	INET			#InterNETworking
 options 	INET6			#IPv6 communications protocols
 options 	FFS			#Berkeley Fast Filesystem
 options 	SOFTUPDATES		#Enable FFS soft updates support
+options 	UFS_DIRHASH		#Improve performance on big directories
 options 	MD_ROOT			#MD is a potential root device
 options 	NFSCLIENT		#Network Filesystem Client
 options 	NFSSERVER		#Network Filesystem Server
diff --git a/sys/i386/conf/GENERIC b/sys/i386/conf/GENERIC
index 269b210475ef..f062d27aa81f 100644
--- a/sys/i386/conf/GENERIC
+++ b/sys/i386/conf/GENERIC
@@ -33,6 +33,7 @@ options 	INET			#InterNETworking
 options 	INET6			#IPv6 communications protocols
 options 	FFS			#Berkeley Fast Filesystem
 options 	SOFTUPDATES		#Enable FFS soft updates support
+options 	UFS_DIRHASH		#Improve performance on big directories
 options 	MD_ROOT			#MD is a potential root device
 options 	NFSCLIENT		#Network Filesystem Client
 options 	NFSSERVER		#Network Filesystem Server
diff --git a/sys/ia64/conf/GENERIC b/sys/ia64/conf/GENERIC
index 2e996ac95bb5..d9f36b43ad23 100644
--- a/sys/ia64/conf/GENERIC
+++ b/sys/ia64/conf/GENERIC
@@ -37,6 +37,7 @@ options 	INET			#InterNETworking
 options 	INET6			#IPv6 communications protocols
 options 	FFS			#Berkeley Fast Filesystem
 options 	SOFTUPDATES		#Enable FFS soft updates support
+options 	UFS_DIRHASH		#Improve performance on big directories
 options 	MD_ROOT			#MD is a potential root device
 options 	NFSCLIENT		#Network Filesystem Client
 options 	NFSSERVER		#Network Filesystem Server
diff --git a/sys/pc98/conf/GENERIC b/sys/pc98/conf/GENERIC
index 278c9c8c3009..6286c6b1f9a3 100644
--- a/sys/pc98/conf/GENERIC
+++ b/sys/pc98/conf/GENERIC
@@ -36,6 +36,7 @@ options 	INET			#InterNETworking
 options 	INET6			#IPv6 communications protocols
 options 	FFS			#Berkeley Fast Filesystem
 options 	SOFTUPDATES		#Enable FFS soft updates support
+options 	UFS_DIRHASH		#Improve performance on big directories
 options 	MD_ROOT			#MD is a potential root device
 options 	NFSCLIENT		#Network Filesystem Client
 options 	NFSSERVER		#Network Filesystem Server