[PATCH v2 02/29] cred: return old creds from revert_creds_light()

Christian Brauner
2024-11-25T14:10:25Z

So we can easily convert revert_creds() callers over to drop the
reference count explicitly.

Signed-off-by: Christian Brauner <brauner@kernel.org>
---
include/linux/cred.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/linux/cred.h b/include/linux/cred.h
index b0bc1fea9ca05a26f4fa719f1d4701f010994288..57cf0256ea292b6c981238573658094649c4757a 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -185,9 +185,12 @@ static inline const struct cred *override_creds_light(const struct cred *overrid
return old;
}

-static inline void revert_creds_light(const struct cred *revert_cred)
+static inline const struct cred *revert_creds_light(const struct cred *revert_cred)
{
+ const struct cred *override_cred = current->cred;
+
rcu_assign_pointer(current->cred, revert_cred);
+ return override_cred;
}

/**

--
2.45.2