summaryrefslogtreecommitdiffstats
path: root/fs/afs/mntpt.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/afs/mntpt.c')
-rw-r--r--fs/afs/mntpt.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index 97f50e9fd9..297487ee83 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -140,6 +140,11 @@ static int afs_mntpt_set_params(struct fs_context *fc, struct dentry *mntpt)
put_page(page);
if (ret < 0)
return ret;
+
+ /* Don't cross a backup volume mountpoint from a backup volume */
+ if (src_as->volume && src_as->volume->type == AFSVL_BACKVOL &&
+ ctx->type == AFSVL_BACKVOL)
+ return -ENODEV;
}
return 0;