From: Gunnar Beutner <gunnar@beutner.name>
Date: Thu, 28 Apr 2011 16:35:50 +0000 (+0200)
Subject: Implemented NFS export_operations.
X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=commitdiff_plain;h=055656d4f4dfc1a85646a2c0cc10b9dce86da72b;p=zfs.git

Implemented NFS export_operations.

Implemented the required NFS operations for exporting ZFS datasets
using the in-kernel NFS daemon.
---

diff --git a/Makefile.in b/Makefile.in
index 0e6650e..9571503 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -66,6 +66,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/cmd/Makefile.in b/cmd/Makefile.in
index 3568eb1..d75ea03 100644
--- a/cmd/Makefile.in
+++ b/cmd/Makefile.in
@@ -51,6 +51,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/cmd/mount_zfs/Makefile.in b/cmd/mount_zfs/Makefile.in
index 27afbeb..cb44c19 100644
--- a/cmd/mount_zfs/Makefile.in
+++ b/cmd/mount_zfs/Makefile.in
@@ -54,6 +54,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/cmd/zdb/Makefile.in b/cmd/zdb/Makefile.in
index bce8a78..32938ab 100644
--- a/cmd/zdb/Makefile.in
+++ b/cmd/zdb/Makefile.in
@@ -54,6 +54,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/cmd/zfs/Makefile.in b/cmd/zfs/Makefile.in
index 8df35a2..caeae5c 100644
--- a/cmd/zfs/Makefile.in
+++ b/cmd/zfs/Makefile.in
@@ -54,6 +54,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/cmd/zinject/Makefile.in b/cmd/zinject/Makefile.in
index 47ee6d7..a84f068 100644
--- a/cmd/zinject/Makefile.in
+++ b/cmd/zinject/Makefile.in
@@ -54,6 +54,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/cmd/zpios/Makefile.in b/cmd/zpios/Makefile.in
index 9f42e2d..258f36d 100644
--- a/cmd/zpios/Makefile.in
+++ b/cmd/zpios/Makefile.in
@@ -54,6 +54,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/cmd/zpool/Makefile.in b/cmd/zpool/Makefile.in
index f3e4bc7..ea0e56a 100644
--- a/cmd/zpool/Makefile.in
+++ b/cmd/zpool/Makefile.in
@@ -54,6 +54,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/cmd/zpool_id/Makefile.in b/cmd/zpool_id/Makefile.in
index b292d9c..b6da33c 100644
--- a/cmd/zpool_id/Makefile.in
+++ b/cmd/zpool_id/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/cmd/zpool_layout/Makefile.in b/cmd/zpool_layout/Makefile.in
index 2a660ee..6939e4b 100644
--- a/cmd/zpool_layout/Makefile.in
+++ b/cmd/zpool_layout/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/cmd/ztest/Makefile.in b/cmd/ztest/Makefile.in
index 65e36a0..6a887e9 100644
--- a/cmd/ztest/Makefile.in
+++ b/cmd/ztest/Makefile.in
@@ -54,6 +54,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/cmd/zvol_id/Makefile.in b/cmd/zvol_id/Makefile.in
index 3e8a34b..7ff4e45 100644
--- a/cmd/zvol_id/Makefile.in
+++ b/cmd/zvol_id/Makefile.in
@@ -54,6 +54,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/config/kernel-d-obtain-alias.m4 b/config/kernel-d-obtain-alias.m4
new file mode 100644
index 0000000..d80a1c8
--- /dev/null
+++ b/config/kernel-d-obtain-alias.m4
@@ -0,0 +1,12 @@
+dnl #
+dnl # 2.6.28 API change
+dnl # Added d_obtain_alias() helper function.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_D_OBTAIN_ALIAS], [
+	ZFS_CHECK_SYMBOL_EXPORT(
+		[d_obtain_alias],
+		[fs/dcache.c],
+		[AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
+		[d_obtain_alias() is available])],
+		[])
+])
diff --git a/config/kernel.m4 b/config/kernel.m4
index f31d93c..e2a983b 100644
--- a/config/kernel.m4
+++ b/config/kernel.m4
@@ -35,6 +35,7 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
 	ZFS_AC_KERNEL_FSYNC_2ARGS
 	ZFS_AC_KERNEL_EVICT_INODE
 	ZFS_AC_KERNEL_INSERT_INODE_LOCKED
+	ZFS_AC_KERNEL_D_OBTAIN_ALIAS
 
 	if test "$LINUX_OBJ" != "$LINUX"; then
 		KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ"
diff --git a/configure b/configure
index 30f3b32..5e501ee 100755
--- a/configure
+++ b/configure
@@ -14358,6 +14358,46 @@ _ACEOF
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether symbol d_obtain_alias is exported" >&5
+$as_echo_n "checking whether symbol d_obtain_alias is exported... " >&6; }
+	grep -q -E '[[:space:]]d_obtain_alias[[:space:]]' \
+		$LINUX_OBJ/$LINUX_SYMBOLS 2>/dev/null
+	rc=$?
+	if test $rc -ne 0; then
+		export=0
+		for file in fs/dcache.c; do
+			grep -q -E "EXPORT_SYMBOL.*(d_obtain_alias)" "$LINUX/$file" 2>/dev/null
+			rc=$?
+		        if test $rc -eq 0; then
+		                export=1
+		                break;
+		        fi
+		done
+		if test $export -eq 0; then
+			{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else
+			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_D_OBTAIN_ALIAS 1
+_ACEOF
+
+		fi
+	else
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_D_OBTAIN_ALIAS 1
+_ACEOF
+
+	fi
+
+
+
 	if test "$LINUX_OBJ" != "$LINUX"; then
 		KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ"
 	fi
@@ -18404,6 +18444,46 @@ _ACEOF
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether symbol d_obtain_alias is exported" >&5
+$as_echo_n "checking whether symbol d_obtain_alias is exported... " >&6; }
+	grep -q -E '[[:space:]]d_obtain_alias[[:space:]]' \
+		$LINUX_OBJ/$LINUX_SYMBOLS 2>/dev/null
+	rc=$?
+	if test $rc -ne 0; then
+		export=0
+		for file in fs/dcache.c; do
+			grep -q -E "EXPORT_SYMBOL.*(d_obtain_alias)" "$LINUX/$file" 2>/dev/null
+			rc=$?
+		        if test $rc -eq 0; then
+		                export=1
+		                break;
+		        fi
+		done
+		if test $export -eq 0; then
+			{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else
+			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_D_OBTAIN_ALIAS 1
+_ACEOF
+
+		fi
+	else
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_D_OBTAIN_ALIAS 1
+_ACEOF
+
+	fi
+
+
+
 	if test "$LINUX_OBJ" != "$LINUX"; then
 		KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ"
 	fi
diff --git a/dracut/90zfs/Makefile.in b/dracut/90zfs/Makefile.in
index 5478a01..14918a7 100644
--- a/dracut/90zfs/Makefile.in
+++ b/dracut/90zfs/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/dracut/Makefile.in b/dracut/Makefile.in
index 3da3662..8afe241 100644
--- a/dracut/Makefile.in
+++ b/dracut/Makefile.in
@@ -51,6 +51,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/etc/Makefile.in b/etc/Makefile.in
index 9f32d7d..d8a9b26 100644
--- a/etc/Makefile.in
+++ b/etc/Makefile.in
@@ -51,6 +51,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/etc/init.d/Makefile.in b/etc/init.d/Makefile.in
index 3f673bb..7ad43d4 100644
--- a/etc/init.d/Makefile.in
+++ b/etc/init.d/Makefile.in
@@ -51,6 +51,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/etc/udev/Makefile.in b/etc/udev/Makefile.in
index 2d92889..2cee459 100644
--- a/etc/udev/Makefile.in
+++ b/etc/udev/Makefile.in
@@ -51,6 +51,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/etc/udev/rules.d/Makefile.in b/etc/udev/rules.d/Makefile.in
index 9937d06..44127cc 100644
--- a/etc/udev/rules.d/Makefile.in
+++ b/etc/udev/rules.d/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/etc/zfs/Makefile.in b/etc/zfs/Makefile.in
index 3f4d3ec..8817621 100644
--- a/etc/zfs/Makefile.in
+++ b/etc/zfs/Makefile.in
@@ -52,6 +52,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/include/Makefile.in b/include/Makefile.in
index cfaf479..d2129ee 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/include/linux/Makefile.in b/include/linux/Makefile.in
index 531ce36..a2e9998 100644
--- a/include/linux/Makefile.in
+++ b/include/linux/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/include/sys/Makefile.in b/include/sys/Makefile.in
index fe0c98a..014d350 100644
--- a/include/sys/Makefile.in
+++ b/include/sys/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/include/sys/fm/Makefile.in b/include/sys/fm/Makefile.in
index 29b215d..38d2fee 100644
--- a/include/sys/fm/Makefile.in
+++ b/include/sys/fm/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/include/sys/fm/fs/Makefile.in b/include/sys/fm/fs/Makefile.in
index ca7bc30..71ff76f 100644
--- a/include/sys/fm/fs/Makefile.in
+++ b/include/sys/fm/fs/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/include/sys/fs/Makefile.in b/include/sys/fs/Makefile.in
index bebbce9..f8172d4 100644
--- a/include/sys/fs/Makefile.in
+++ b/include/sys/fs/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/include/sys/zpl.h b/include/sys/zpl.h
index b6da0d2..7213475 100644
--- a/include/sys/zpl.h
+++ b/include/sys/zpl.h
@@ -28,6 +28,7 @@
 #include <sys/vfs.h>
 #include <linux/vfs_compat.h>
 #include <linux/xattr_compat.h>
+#include <linux/exportfs.h>
 
 /* zpl_inode.c */
 extern const struct inode_operations zpl_inode_operations;
@@ -53,7 +54,7 @@ typedef struct zpl_mount_data {
 } zpl_mount_data_t;
 
 extern const struct super_operations zpl_super_operations;
-/* extern const struct export_operations zpl_export_operations; */
+extern const struct export_operations zpl_export_operations;
 extern struct file_system_type zpl_fs_type;
 
 /* zpl_xattr.c */
diff --git a/lib/Makefile.in b/lib/Makefile.in
index da30f53..70380c3 100644
--- a/lib/Makefile.in
+++ b/lib/Makefile.in
@@ -51,6 +51,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libavl/Makefile.in b/lib/libavl/Makefile.in
index 863d72e..9228d15 100644
--- a/lib/libavl/Makefile.in
+++ b/lib/libavl/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libefi/Makefile.in b/lib/libefi/Makefile.in
index 77f99b6..ff7a048 100644
--- a/lib/libefi/Makefile.in
+++ b/lib/libefi/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libnvpair/Makefile.in b/lib/libnvpair/Makefile.in
index 31a6ccb..21e228f 100644
--- a/lib/libnvpair/Makefile.in
+++ b/lib/libnvpair/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libspl/Makefile.in b/lib/libspl/Makefile.in
index e9f9881..0406162 100644
--- a/lib/libspl/Makefile.in
+++ b/lib/libspl/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libspl/asm-generic/Makefile.in b/lib/libspl/asm-generic/Makefile.in
index 22f9750..17d0368 100644
--- a/lib/libspl/asm-generic/Makefile.in
+++ b/lib/libspl/asm-generic/Makefile.in
@@ -52,6 +52,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libspl/asm-i386/Makefile.in b/lib/libspl/asm-i386/Makefile.in
index 7ba92fc..30e7ffb 100644
--- a/lib/libspl/asm-i386/Makefile.in
+++ b/lib/libspl/asm-i386/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libspl/asm-x86_64/Makefile.in b/lib/libspl/asm-x86_64/Makefile.in
index 1b20391..f09efc8 100644
--- a/lib/libspl/asm-x86_64/Makefile.in
+++ b/lib/libspl/asm-x86_64/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libspl/include/Makefile.in b/lib/libspl/include/Makefile.in
index b1cc2b0..c6e83b1 100644
--- a/lib/libspl/include/Makefile.in
+++ b/lib/libspl/include/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libspl/include/ia32/Makefile.in b/lib/libspl/include/ia32/Makefile.in
index 65c0d8b..1e91378 100644
--- a/lib/libspl/include/ia32/Makefile.in
+++ b/lib/libspl/include/ia32/Makefile.in
@@ -51,6 +51,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libspl/include/ia32/sys/Makefile.in b/lib/libspl/include/ia32/sys/Makefile.in
index a710298..50518f6 100644
--- a/lib/libspl/include/ia32/sys/Makefile.in
+++ b/lib/libspl/include/ia32/sys/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libspl/include/rpc/Makefile.in b/lib/libspl/include/rpc/Makefile.in
index 868e4dd..47894d8 100644
--- a/lib/libspl/include/rpc/Makefile.in
+++ b/lib/libspl/include/rpc/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libspl/include/sys/Makefile.in b/lib/libspl/include/sys/Makefile.in
index 8f3ab8b..4578986 100644
--- a/lib/libspl/include/sys/Makefile.in
+++ b/lib/libspl/include/sys/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libspl/include/sys/dktp/Makefile.in b/lib/libspl/include/sys/dktp/Makefile.in
index 9146dc6..b179103 100644
--- a/lib/libspl/include/sys/dktp/Makefile.in
+++ b/lib/libspl/include/sys/dktp/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libspl/include/sys/sysevent/Makefile.in b/lib/libspl/include/sys/sysevent/Makefile.in
index ad58060..48c3453 100644
--- a/lib/libspl/include/sys/sysevent/Makefile.in
+++ b/lib/libspl/include/sys/sysevent/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libspl/include/util/Makefile.in b/lib/libspl/include/util/Makefile.in
index e2451a9..bf5b94e 100644
--- a/lib/libspl/include/util/Makefile.in
+++ b/lib/libspl/include/util/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libunicode/Makefile.in b/lib/libunicode/Makefile.in
index 6098ce9..71f06ae 100644
--- a/lib/libunicode/Makefile.in
+++ b/lib/libunicode/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libuutil/Makefile.in b/lib/libuutil/Makefile.in
index c200819..5a67600 100644
--- a/lib/libuutil/Makefile.in
+++ b/lib/libuutil/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libzfs/Makefile.in b/lib/libzfs/Makefile.in
index bcd3101..80cb739 100644
--- a/lib/libzfs/Makefile.in
+++ b/lib/libzfs/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/lib/libzpool/Makefile.in b/lib/libzpool/Makefile.in
index 56b4493..8ad5d3d 100644
--- a/lib/libzpool/Makefile.in
+++ b/lib/libzpool/Makefile.in
@@ -53,6 +53,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/man/Makefile.in b/man/Makefile.in
index b2ddc4e..d4be37e 100644
--- a/man/Makefile.in
+++ b/man/Makefile.in
@@ -51,6 +51,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/man/man8/Makefile.in b/man/man8/Makefile.in
index d502f67..61700d9 100644
--- a/man/man8/Makefile.in
+++ b/man/man8/Makefile.in
@@ -51,6 +51,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/module/zfs/Makefile.in b/module/zfs/Makefile.in
index 5a99852..b303168 100644
--- a/module/zfs/Makefile.in
+++ b/module/zfs/Makefile.in
@@ -83,6 +83,7 @@ $(MODULE)-objs += @top_srcdir@/module/zfs/zio_checksum.o
 $(MODULE)-objs += @top_srcdir@/module/zfs/zio_compress.o
 $(MODULE)-objs += @top_srcdir@/module/zfs/zio_inject.o
 $(MODULE)-objs += @top_srcdir@/module/zfs/zle.o
+$(MODULE)-objs += @top_srcdir@/module/zfs/zpl_export.o
 $(MODULE)-objs += @top_srcdir@/module/zfs/zpl_file.o
 $(MODULE)-objs += @top_srcdir@/module/zfs/zpl_inode.o
 $(MODULE)-objs += @top_srcdir@/module/zfs/zpl_super.o
diff --git a/module/zfs/zfs_vfsops.c b/module/zfs/zfs_vfsops.c
index 8a82d9d..e71aa91 100644
--- a/module/zfs/zfs_vfsops.c
+++ b/module/zfs/zfs_vfsops.c
@@ -1206,9 +1206,7 @@ zfs_domount(struct super_block *sb, void *data, int silent)
 	/* Set callback operations for the file system. */
 	sb->s_op = &zpl_super_operations;
 	sb->s_xattr = zpl_xattr_handlers;
-#ifdef HAVE_EXPORTS
-        sb->s_export_op = &zpl_export_operations;
-#endif /* HAVE_EXPORTS */
+	sb->s_export_op = &zpl_export_operations;
 
 	/* Set features for file system. */
 	zfs_set_fuid_feature(zsb);
diff --git a/module/zfs/zpl_export.c b/module/zfs/zpl_export.c
new file mode 100644
index 0000000..a389556
--- /dev/null
+++ b/module/zfs/zpl_export.c
@@ -0,0 +1,121 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 2011 Gunnar Beutner
+ */
+
+
+#include <sys/zfs_vnops.h>
+#include <sys/zfs_znode.h>
+#include <sys/zpl.h>
+
+
+static int
+zpl_encode_fh(struct dentry *dentry, __u32 *fh, int *max_len, int connectable)
+{
+	fid_t *fid = (fid_t *)fh;
+	struct inode *ip = dentry->d_inode;
+	int len_bytes, rc;
+
+	len_bytes = *max_len * sizeof (__u32);
+
+	if (len_bytes < offsetof(fid_t, fid_data))
+		return 255;
+
+	fid->fid_len = len_bytes - offsetof(fid_t, fid_data);
+
+	rc = zfs_fid(ip, fid);
+
+	len_bytes = offsetof(fid_t, fid_data) + fid->fid_len;
+	*max_len = roundup(len_bytes, sizeof (__u32)) / sizeof (__u32);
+
+	return (rc == 0 ? FILEID_INO32_GEN : 255);
+}
+
+static struct dentry *
+zpl_dentry_obtain_alias(struct inode *ip)
+{
+	struct dentry *result;
+
+#ifdef HAVE_D_OBTAIN_ALIAS
+	result = d_obtain_alias(ip);
+#else
+	result = d_alloc_anon(ip);
+
+	if (result == NULL) {
+		iput(ip);
+		result = ERR_PTR(-ENOMEM);
+	}
+#endif /* HAVE_D_OBTAIN_ALIAS */
+
+	return result;
+}
+
+static struct dentry *
+zpl_fh_to_dentry(struct super_block *sb, struct fid *fh,
+    int fh_len, int fh_type)
+{
+	zfs_sb_t *zsb = sb->s_fs_info;
+	struct vfsmount *vfs = zsb->z_vfs;
+	fid_t *fid = (fid_t *)fh;
+	struct inode *ip;
+	int len_bytes, rc;
+
+	len_bytes = fh_len * sizeof (__u32);
+
+	if (fh_type != FILEID_INO32_GEN ||
+	    len_bytes < offsetof(fid_t, fid_data) ||
+	    len_bytes < offsetof(fid_t, fid_data) + fid->fid_len)
+		return ERR_PTR(-EINVAL);
+
+	rc = zfs_vget(vfs, &ip, fid);
+
+	if (rc != 0)
+		return ERR_PTR(-rc);
+
+	ASSERT((ip != NULL) && !IS_ERR(ip));
+
+	return zpl_dentry_obtain_alias(ip);
+}
+
+static struct dentry *
+zpl_get_parent(struct dentry *child)
+{
+	cred_t *cr = CRED();
+	struct inode *ip;
+	int error;
+
+	crhold(cr);
+	error = -zfs_lookup(child->d_inode, "..", &ip, 0, cr, NULL, NULL);
+	crfree(cr);
+	ASSERT3S(error, <=, 0);
+
+	if (error)
+		return ERR_PTR(error);
+
+	return zpl_dentry_obtain_alias(ip);
+}
+
+const struct export_operations zpl_export_operations = {
+	.encode_fh	= zpl_encode_fh,
+	.fh_to_dentry	= zpl_fh_to_dentry,
+	.get_parent	= zpl_get_parent
+};
diff --git a/module/zfs/zpl_super.c b/module/zfs/zpl_super.c
index 6e8265d..4937832 100644
--- a/module/zfs/zpl_super.c
+++ b/module/zfs/zpl_super.c
@@ -210,14 +210,6 @@ const struct super_operations zpl_super_operations = {
 	.show_stats	= NULL,
 };
 
-#if 0
-const struct export_operations zpl_export_operations = {
-	.fh_to_dentry	= NULL,
-	.fh_to_parent	= NULL,
-	.get_parent	= NULL,
-};
-#endif
-
 struct file_system_type zpl_fs_type = {
 	.owner		= THIS_MODULE,
 	.name		= ZFS_DRIVER,
diff --git a/scripts/Makefile.in b/scripts/Makefile.in
index 2aaa675..0cc5c82 100644
--- a/scripts/Makefile.in
+++ b/scripts/Makefile.in
@@ -52,6 +52,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/scripts/zpios-profile/Makefile.in b/scripts/zpios-profile/Makefile.in
index 290362c..1d6a26b 100644
--- a/scripts/zpios-profile/Makefile.in
+++ b/scripts/zpios-profile/Makefile.in
@@ -52,6 +52,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/scripts/zpios-test/Makefile.in b/scripts/zpios-test/Makefile.in
index 89b3f45..56431d4 100644
--- a/scripts/zpios-test/Makefile.in
+++ b/scripts/zpios-test/Makefile.in
@@ -52,6 +52,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/scripts/zpool-config/Makefile.in b/scripts/zpool-config/Makefile.in
index 6011cb9..5f267d6 100644
--- a/scripts/zpool-config/Makefile.in
+++ b/scripts/zpool-config/Makefile.in
@@ -52,6 +52,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/scripts/zpool-layout/Makefile.in b/scripts/zpool-layout/Makefile.in
index 83f32a3..5e7bf60 100644
--- a/scripts/zpool-layout/Makefile.in
+++ b/scripts/zpool-layout/Makefile.in
@@ -52,6 +52,7 @@ am__aclocal_m4_deps =  \
 	$(top_srcdir)/config/kernel-blk-rq-pos.m4 \
 	$(top_srcdir)/config/kernel-blk-rq-sectors.m4 \
 	$(top_srcdir)/config/kernel-blkdev-get-by-path.m4 \
+	$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
 	$(top_srcdir)/config/kernel-evict-inode.m4 \
 	$(top_srcdir)/config/kernel-fmode-t.m4 \
 	$(top_srcdir)/config/kernel-fsync.m4 \
diff --git a/zfs_config.h.in b/zfs_config.h.in
index 938da56..3d47e3d 100644
--- a/zfs_config.h.in
+++ b/zfs_config.h.in
@@ -72,6 +72,9 @@
 /* Define to 1 if you have the <dlfcn.h> header file. */
 #undef HAVE_DLFCN_H
 
+/* d_obtain_alias() is available */
+#undef HAVE_D_OBTAIN_ALIAS
+
 /* sops->evict_inode() exists */
 #undef HAVE_EVICT_INODE