X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;ds=sidebyside;f=include%2Flinux%2Fcred.h;h=65d870c9d00e38512c778980ee662d3d07de5059;hb=75094825046a23067ba6f3a1d93007a764dc5aec;hp=631286535d0f126a13a366b924cae62f58d114e1;hpb=409232a45096a2c0d06634269a7c1c3412ecf910;p=mirror_ubuntu-bionic-kernel.git

diff --git a/include/linux/cred.h b/include/linux/cred.h
index 631286535d0f..65d870c9d00e 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -145,7 +145,11 @@ struct cred {
 	struct user_struct *user;	/* real user ID subscription */
 	struct user_namespace *user_ns; /* user_ns the caps and keyrings are relative to. */
 	struct group_info *group_info;	/* supplementary groups for euid/fsgid */
-	struct rcu_head	rcu;		/* RCU deletion hook */
+	/* RCU deletion */
+	union {
+		int non_rcu;			/* Can we skip RCU deletion? */
+		struct rcu_head	rcu;		/* RCU deletion hook */
+	};
 } __randomize_layout;
 
 extern void __put_cred(struct cred *);
@@ -159,6 +163,7 @@ extern int commit_creds(struct cred *);
 extern void abort_creds(struct cred *);
 extern const struct cred *override_creds(const struct cred *);
 extern void revert_creds(const struct cred *);
+extern struct cred *clone_cred(const struct cred *old);
 extern struct cred *prepare_kernel_cred(struct task_struct *);
 extern int change_create_files_as(struct cred *, struct inode *);
 extern int set_security_override(struct cred *, u32);
@@ -243,6 +248,7 @@ static inline const struct cred *get_cred(const struct cred *cred)
 {
 	struct cred *nonconst_cred = (struct cred *) cred;
 	validate_creds(cred);
+	nonconst_cred->non_rcu = 0;
 	return get_new_cred(nonconst_cred);
 }