[Midnightbsd-cvs] src [9728] trunk/sys/boot/zfs/zfsimpl.c: add lz4 flag for read

[laffer1 at midnightbsd.org]

Revision: 9728
          http://svnweb.midnightbsd.org/src/?rev=9728
Author:   laffer1
Date:     2017-12-22 15:37:38 -0500 (Fri, 22 Dec 2017)
Log Message:
-----------
add lz4 flag for read

Modified Paths:
--------------
    trunk/sys/boot/zfs/zfsimpl.c

Modified: trunk/sys/boot/zfs/zfsimpl.c
===================================================================
--- trunk/sys/boot/zfs/zfsimpl.c	2017-12-22 20:33:33 UTC (rev 9727)
+++ trunk/sys/boot/zfs/zfsimpl.c	2017-12-22 20:37:38 UTC (rev 9728)
@@ -25,6 +25,7 @@
  */
 
 #include <sys/cdefs.h>
+/* $FreeBSD: stable/9/sys/boot/zfs/zfsimpl.c 284510 2015-06-17 11:48:00Z avg $ */
 __MBSDID("$MidnightBSD$");
 
 /*
@@ -53,6 +54,9 @@
  * List of ZFS features supported for read
  */
 static const char *features_for_read[] = {
+	"org.illumos:lz4_compress",
+	"com.delphix:hole_birth",
+	"com.delphix:extensible_dataset",
 	NULL
 };
 
@@ -1217,6 +1221,10 @@
 			ibn = bn >> ((nlevels - i - 1) * ibshift);
 			ibn &= ((1 << ibshift) - 1);
 			bp = indbp[ibn];
+			if (BP_IS_HOLE(&bp)) {
+				memset(dnode_cache_buf, 0, bsize);
+				break;
+			}
 			rc = zio_read(spa, &bp, dnode_cache_buf);
 			if (rc)
 				return (rc);