From: Isaac Huang <he.huang@intel.com>
Date: Fri, 6 Oct 2017 02:30:02 +0000 (-0600)
Subject: Use linear abd in vdev_copy_uberblocks()
X-Git-Tag: zfs-0.8.0-rc1~534
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=eea2e2413220b34a3da0911dee554df20bdd0c47;p=zfs

Use linear abd in vdev_copy_uberblocks()

The vdev_copy_uberblocks() function should use abd_alloc_linear() to
allocate ub_abd, because abd_to_buf(ub_abd)) is used later.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Isaac Huang <he.huang@intel.com>
Closes #6718
Closes #6713
---

diff --git a/module/zfs/vdev_label.c b/module/zfs/vdev_label.c
index f7a994255..8192431f9 100644
--- a/module/zfs/vdev_label.c
+++ b/module/zfs/vdev_label.c
@@ -1164,7 +1164,7 @@ vdev_copy_uberblocks(vdev_t *vd)
 
 	spa_config_enter(vd->vdev_spa, locks, FTAG, RW_READER);
 
-	ub_abd = abd_alloc(VDEV_UBERBLOCK_SIZE(vd), B_TRUE);
+	ub_abd = abd_alloc_linear(VDEV_UBERBLOCK_SIZE(vd), B_TRUE);
 
 	write_zio = zio_root(vd->vdev_spa, NULL, NULL, flags);
 	for (int n = 0; n < VDEV_UBERBLOCK_COUNT(vd); n++) {