ACPI: fix acpi_find_child_device() invocation in acpi_preset_companion()

[mirror_ubuntu-bionic-kernel.git] / include / linux / cred.h

diff --git a/include/linux/cred.h b/include/linux/cred.h
index 631286535d0f126a13a366b924cae62f58d114e1..65d870c9d00e38512c778980ee662d3d07de5059 100644 (file)
--- 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);
 }