svn commit: r248976 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs

[Martin Matuska]

Author: mm
Date: Mon Apr  1 16:14:57 2013
New Revision: 248976
URL: http://svnweb.freebsd.org/changeset/base/248976

Log:
  Call dmu_snapshot_list_next() in zvol.c with dsl_pool_config lock held
  
  Submitted by:	Andriy Gapon <avg at FreeBSD.org>
  MFC after:	17 days

Modified:
  head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c

Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c	Mon Apr  1 13:48:30 2013	(r248975)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c	Mon Apr  1 16:14:57 2013	(r248976)
@@ -2197,8 +2197,10 @@ zvol_create_snapshots(objset_t *os, cons
 			break;
 		}
 
+		dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
 		error = dmu_snapshot_list_next(os, MAXPATHLEN - len,
 		    sname + len, &obj, &cookie, NULL);
+		dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
 		if (error != 0) {
 			if (error == ENOENT)
 				error = 0;