1 files changed, 7 insertions, 0 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c
index 07fd3c6..e5d159b 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c
@@ -78,6 +78,7 @@
 #include <sys/vdev_impl.h>
 #include <sys/zvol.h>
 #include <sys/zil_impl.h>
+#include <sys/dbuf.h>
 #include <geom/geom.h>
 
 #include "zfs_namecheck.h"
@@ -1051,6 +1052,12 @@ zvol_get_data(void *arg, lr_write_t *lr, char *buf, zio_t *zio)
 		error = dmu_buf_hold(os, object, offset, zgd, &db,
 		    DMU_READ_NO_PREFETCH);
 		if (error == 0) {
+			blkptr_t *obp = dmu_buf_get_blkptr(db);
+			if (obp) {
+				ASSERT(BP_IS_HOLE(bp));
+				*bp = *obp;
+			}
+
 			zgd->zgd_db = db;
 			zgd->zgd_bp = bp;