From 29445fe3a03d58d5aa725bd6c8964df8c8081385 Mon Sep 17 00:00:00 2001
From: Allan Jude <github@shellfusion.ca>
Date: Thu, 14 Jun 2018 12:47:26 -0400
Subject: [PATCH] Reserve DMU_BACKUP_FEATURE for ZSTD

Reserve bit 25 for the ZSTD compression feature from FreeBSD.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Allan Jude <allanjude@freebsd.org>
Closes #7626
---
 include/sys/zfs_ioctl.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/sys/zfs_ioctl.h b/include/sys/zfs_ioctl.h
index 06e3cb24a46c..317622f7c733 100644
--- a/include/sys/zfs_ioctl.h
+++ b/include/sys/zfs_ioctl.h
@@ -105,6 +105,7 @@ typedef enum drr_headertype {
 #define	DMU_BACKUP_FEATURE_COMPRESSED		(1 << 22)
 #define	DMU_BACKUP_FEATURE_LARGE_DNODE		(1 << 23)
 #define	DMU_BACKUP_FEATURE_RAW			(1 << 24)
+/* flag #25 is reserved for the ZSTD compression feature */
 
 /*
  * Mask of all supported backup features