[PATCH v4 10/54] configfs, securityfs: kill_litter_super() not needed

Al Viro
2025-11-18T05:16:23Z

These are guaranteed to be empty by the time they are shut down;
both are single-instance and there is an internal mount maintained
for as long as there is any contents.

Both have that internal mount pinned by every object in root.

In other words, kill_litter_super() boils down to kill_anon_super()
for those.

Reviewed-by: Joel Becker <jlbec@evilplan.org>
Acked-by: Paul Moore <paul@paul-moore> (LSM)
Acked-by: Andreas Hindborg <a.hindborg@kernel.org> (configfs)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/configfs/mount.c | 2 +-
security/inode.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c
index 456c4a2efb53..4929f3431189 100644
--- a/fs/configfs/mount.c
+++ b/fs/configfs/mount.c
@@ -116,7 +116,7 @@ static struct file_system_type configfs_fs_type = {
.owner = THIS_MODULE,
.name = "configfs",
.init_fs_context = configfs_init_fs_context,
- .kill_sb = kill_litter_super,
+ .kill_sb = kill_anon_super,
};
MODULE_ALIAS_FS("configfs");

diff --git a/security/inode.c b/security/inode.c
index 43382ef8896e..bf7b5e2e6955 100644
--- a/security/inode.c
+++ b/security/inode.c
@@ -70,7 +70,7 @@ static struct file_system_type fs_type = {
.owner = THIS_MODULE,
.name = "securityfs",
.init_fs_context = securityfs_init_fs_context,
- .kill_sb = kill_litter_super,
+ .kill_sb = kill_anon_super,
};

/**
--
2.47.3