[CRIU] [PATCH 2/2] mnt: Update can_mount_now to test if master peer is ready

[Cyrill Gorcunov]

If we're in someone's slave list we have to wait until
master peer is mounted before mounting ourself otherwise
we ruin the master/slave order.

https://jira.sw.ru/browse/PSBM-39957

Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 mount.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/mount.c b/mount.c
index 52cb8a1766d0..f99bce414cff 100644
--- a/mount.c
+++ b/mount.c
@@ -2126,6 +2126,12 @@ static bool can_mount_now(struct mount_info *mi)
 
 	if (mi->external)
 		return true;
+	/*
+	 * We're in someone's slave list so wait
+	 * until master peer is mounted.
+	 */
+	if (mi->mnt_master && mi->mnt_master->mounted == false)
+		return false;
 
 	if (mi->master_id && mi->bind == NULL)
 		return false;
-- 
2.4.3