[CRIU] [PATCH 1/4] mount: don't apply superblock flags for external mounts

[Andrei Vagin]

From: Andrei Vagin <avagin at virtuozzo.com>

We should not change an external resources.

Signed-off-by: Andrei Vagin <avagin at virtuozzo.com>
---
 criu/mount.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/criu/mount.c b/criu/mount.c
index 30e7788..00ecec5 100644
--- a/criu/mount.c
+++ b/criu/mount.c
@@ -1725,8 +1725,8 @@ static int do_new_mount(struct mount_info *mi)
 		goto out;
 	}
 
-	if (remount_ro && mount(NULL, mi->mountpoint, tp->name,
-				     MS_REMOUNT | MS_RDONLY, NULL)) {
+	if (!mi->is_ns_root && !mi->external && remount_ro &&
+	    mount(NULL, mi->mountpoint, tp->name, MS_REMOUNT | MS_RDONLY, NULL)) {
 		pr_perror("Unable to apply mount options");
 		return -1;
 	}
-- 
2.7.4