From cc99f275a28c43fe450a66a7544f73c4935f7361 Mon Sep 17 00:00:00 2001
From: Don Brady <don.brady@delphix.com>
Date: Wed, 5 Sep 2018 19:33:36 -0600
Subject: Pool allocation classes
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Allocation Classes add the ability to have allocation classes in a
pool that are dedicated to serving specific block categories, such
as DDT data, metadata, and small file blocks. A pool can opt-in to
this feature by adding a 'special' or 'dedup' top-level VDEV.

Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Alek Pinchuk <apinchuk@datto.com>
Reviewed-by: Håkan Johansson <f96hajo@chalmers.se>
Reviewed-by: Andreas Dilger <andreas.dilger@chamcloud.com>
Reviewed-by: DHE <git@dehacked.net>
Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed-by: Gregor Kopka <gregor@kopka.net>
Reviewed-by: Kash Pande <kash@tripleback.net>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Don Brady <don.brady@delphix.com>
Closes #5182
---
 module/zfs/dmu.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'module/zfs/dmu.c')

diff --git a/module/zfs/dmu.c b/module/zfs/dmu.c
index 88b574d4a..8779eb358 100644
--- a/module/zfs/dmu.c
+++ b/module/zfs/dmu.c
@@ -2281,6 +2281,8 @@ dmu_write_policy(objset_t *os, dnode_t *dn, int level, int wp, zio_prop_t *zp)
 	bzero(zp->zp_salt, ZIO_DATA_SALT_LEN);
 	bzero(zp->zp_iv, ZIO_DATA_IV_LEN);
 	bzero(zp->zp_mac, ZIO_DATA_MAC_LEN);
+	zp->zp_zpl_smallblk = DMU_OT_IS_FILE(zp->zp_type) ?
+	    os->os_zpl_special_smallblock : 0;
 
 	ASSERT3U(zp->zp_compress, !=, ZIO_COMPRESS_INHERIT);
 }
-- 
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