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Date:      Tue, 22 Nov 2016 11:44:30 +0000 (UTC)
From:      Andriy Gapon <avg@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r308985 - head/cddl/contrib/opensolaris/lib/libzfs/common
Message-ID:  <201611221144.uAMBiU2X012114@repo.freebsd.org>

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Author: avg
Date: Tue Nov 22 11:44:30 2016
New Revision: 308985
URL: https://svnweb.freebsd.org/changeset/base/308985

Log:
  revert r304520, set canmount=on is not supposed to mount the filesystem
  
  Not sure where I got the idea that it should.
  
  See https://github.com/openzfs/openzfs/pull/218
  
  Reported by:	mahrens
  Pointyhat to:	avg
  MFC after:	5 days

Modified:
  head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c

Modified: head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c
==============================================================================
--- head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c	Tue Nov 22 11:35:29 2016	(r308984)
+++ head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c	Tue Nov 22 11:44:30 2016	(r308985)
@@ -1615,17 +1615,12 @@ zfs_prop_set_list(zfs_handle_t *zhp, nvl
 		assert(cl_idx < nvl_len);
 		/*
 		 * We don't want to unmount & remount the dataset when changing
-		 * its canmount property.  We only use the changelist logic to
-		 * unmount when setting canmount=off for a mounted filesystem
-		 * or when setting canmount=on for an unmounted filesystem.
-		 * For all other changes to canmount property the filesystem
-		 * remains the same.
+		 * its canmount property to 'on' or 'noauto'.  We only use
+		 * the changelist logic to unmount when setting canmount=off.
 		 */
 		if (prop != ZFS_PROP_CANMOUNT ||
 		    (fnvpair_value_uint64(elem) == ZFS_CANMOUNT_OFF &&
-		     zfs_is_mounted(zhp, NULL)) ||
-		    (fnvpair_value_uint64(elem) == ZFS_CANMOUNT_ON &&
-		     !zfs_is_mounted(zhp, NULL))) {
+		     zfs_is_mounted(zhp, NULL))) {
 			cls[cl_idx] = changelist_gather(zhp, prop, 0, 0);
 			if (cls[cl_idx] == NULL)
 				goto error;



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