xfstests generic/306 fixes

index 35fb5ef..b990e38 100755
@@ -49,6 +49,8 @@ _require_scratch
 
 DEVNULL=$SCRATCH_MNT/devnull
 DEVZERO=$SCRATCH_MNT/devzero
+SYMLINK=$SCRATCH_MNT/symlink
+TARGET=$TEST_DIR/target
 
 rm -f $seqres.full
 _scratch_mkfs > $seqres.full 2>&1

@@ -58,6 +60,8 @@ rm -f $DEVNULL $DEVZERO
 
 mknod $DEVNULL c 1 3 || _fail "Could not create devnull device"
 mknod $DEVZERO c 1 5 || _fail "Could not create devzero device"
+touch $TARGET || _fail "Could not create symlink target"
+ln -s $TARGET $SYMLINK
 
 _scratch_unmount || _fail "Could not unmount scratch device"
 _scratch_mount -o ro || _fail "Could notemount scratch readonly"

@@ -66,15 +70,18 @@ _scratch_mount -o ro || _fail "Could notemount scratch readonly"
 echo "== try to create new file"
 touch $SCRATCH_MNT/this_should_fail 2>&1 | _filter_scratch
 echo "== pwrite to null device"
-$XFS_IO_PROG -c "pwrite 0 512" /dev/null | _filter_xfs_io
+$XFS_IO_PROG -F -c "pwrite 0 512" /dev/null | _filter_xfs_io
 echo "== pread from zero device"
-$XFS_IO_PROG -c "pread 0 512" /dev/zero | _filter_xfs_io
+$XFS_IO_PROG -F -c "pread 0 512" /dev/zero | _filter_xfs_io
 
 echo "== truncating write to null device"
 echo foo > $DEVNULL 2>&1 | _filter_scratch
 echo "== appending write to null device"
 echo foo >> $DEVNULL 2>&1 | _filter_scratch
 
+echo "== writing to symlink from ro dev to rw dev"
+$XFS_IO_PROG -F -c "pwrite 0 512" $SYMLINK | _filter_xfs_io
+
 # success, all done
 status=0
 exit

index 8644f38..3fd5f63 100644
@@ -9,3 +9,6 @@ read 512/512 bytes at offset 0
 XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 == truncating write to null device
 == appending write to null device
+== writing to symlink from ro dev to rw dev
+wrote 512/512 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)