[Devel] [PATCH RHEL9 COMMIT] overlayfs: fix lowerpaths handling in mnt_id paths options

[Konstantin Khorenko]

The commit is pushed to "branch-rh9-5.14.0-427.22.1.vz9.62.x-ovz" and will appear at git at bitbucket.org:openvz/vzkernel.git
after rh9-5.14.0-427.22.1.vz9.62.8
------>
commit 5b451d7a6110fde794aa2b2b87b738da53ff8e15
Author: Konstantin Khorenko <khorenko at virtuozzo.com>
Date:   Sat Jul 20 01:07:57 2024 +0300

    overlayfs: fix lowerpaths handling in mnt_id paths options
    
    Use wrappers for access to lowerpaths and their number.
    
    Fixes: 896ee4b155fe ("overlayfs: add mnt_id paths options")
    https://virtuozzo.atlassian.net/browse/PSBM-157244
    
    Signed-off-by: Konstantin Khorenko <khorenko at virtuozzo.com>
    Reviewed-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
---
 fs/overlayfs/super.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 2aeec05c1a34..54904e3197d7 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -402,8 +402,8 @@ static int ovl_show_options(struct seq_file *m, struct dentry *dentry)
 	}
 
 	if (ovl_mnt_id_path_opts) {
-		print_mnt_ids_option(m, "lowerdir_mnt_id", oe->lowerpaths,
-				     ovl_numlower(oe));
+		print_mnt_ids_option(m, "lowerdir_mnt_id", ovl_lowerpaths(oe),
+				     ovl_numlowerpaths(oe));
 		/*
 		 * We don't need to show mnt_id for workdir because it
 		 * on the same mount as upperdir.