CRED: Wrap task credential accesses in the filesystem subsystem

Wrap access to task credentials so that they can be separated more easily from
the task_struct during the introduction of COW creds.

Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id().

Change some task->e?[ug]id to task_e?[ug]id().  In some places it makes more
sense to use RCU directly rather than a convenient wrapper; these will be
addressed by later patches.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: James Morris <jmorris@namei.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/dquot.c b/fs/dquot.c
index 5e95261005b2..c237ccc8581c 100644
--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -874,7 +874,7 @@ static inline int need_print_warning(struct dquot *dquot)
 
         switch (dquot->dq_type) {
                 case USRQUOTA:
-                        return current->fsuid == dquot->dq_id;
+                        return current_fsuid() == dquot->dq_id;
                 case GRPQUOTA:
                         return in_group_p(dquot->dq_id);
         }
@@ -981,7 +981,7 @@ static void send_warning(const struct dquot *dquot, const char warntype)
                 MINOR(dquot->dq_sb->s_dev));
         if (ret)
                 goto attr_err_out;
-        ret = nla_put_u64(skb, QUOTA_NL_A_CAUSED_ID, current->user->uid);
+        ret = nla_put_u64(skb, QUOTA_NL_A_CAUSED_ID, current_uid());
         if (ret)
                 goto attr_err_out;
         genlmsg_end(skb, msg_head);