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userns: Deprecate and rename the user_namespace reference in the user_struct

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With a user_ns reference in struct cred the only user of the user namespace
reference in struct user_struct is to keep the uid hash table alive.

The user_namespace reference in struct user_struct will be going away soon, and
I have removed all of the references.  Rename the field from user_ns to _user_ns
so that the compiler can verify nothing follows the user struct to the user
namespace anymore.

Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman
2011-11-16 23:20:58 -08:00
parent 6f9ac6d93a
commit d0bd6594e2
2 changed files with 4 additions and 4 deletions
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2
include/linux/sched.h
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@@ -729,7 +729,7 @@ struct user_struct {
/* Hash table maintenance information */
struct hlist_node uidhash_node;
uid_t uid;
struct user_namespace *user_ns;
struct user_namespace *_user_ns; /* Don't use will be removed soon */
#ifdef CONFIG_PERF_EVENTS
atomic_long_t locked_vm;