From: Etienne Dechamps <etienne.dechamps@ovh.net>
Date: Fri, 2 Sep 2011 07:57:35 +0000 (+0200)
Subject: Support "sync=always" for ZVOLs.
X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=commitdiff_plain;h=56c34bac44d47898809c46db3e5444511bbe0ef6;p=zfs.git

Support "sync=always" for ZVOLs.

Currently the "sync=always" property works for regular ZFS datasets, but not
for ZVOLs. This patch remedies that.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Fixes #374.
---

diff --git a/module/zfs/zvol.c b/module/zfs/zvol.c
index a25fbbe..9dda040 100644
--- a/module/zfs/zvol.c
+++ b/module/zfs/zvol.c
@@ -555,7 +555,7 @@ zvol_write(void *arg)
 	dmu_tx_commit(tx);
 	zfs_range_unlock(rl);
 
-	if (rq_is_sync(req))
+	if (rq_is_sync(req) || zv->zv_objset->os_sync == ZFS_SYNC_ALWAYS)
 		zil_commit(zv->zv_zilog, ZVOL_OBJ);
 
 	blk_end_request(req, -error, size);