lsm_audit: don't specify the audit pre/post callbacks in 'struct common_audit_data'

It just bloats the audit data structure for no good reason, since the
only time those fields are filled are just before calling the
common_lsm_audit() function, which is also the only user of those
fields.

So just make them be the arguments to common_lsm_audit(), rather than
bloating that structure that is passed around everywhere, and is
initialized in hot paths.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/security/apparmor/audit.c b/security/apparmor/audit.c
index 23f7eb6..cc3520d 100644
--- a/security/apparmor/audit.c
+++ b/security/apparmor/audit.c
@@ -160,9 +160,7 @@
 		  void (*cb) (struct audit_buffer *, void *))
 {
 	sa->aad->type = type;
-	sa->lsm_pre_audit = audit_pre;
-	sa->lsm_post_audit = cb;
-	common_lsm_audit(sa);
+	common_lsm_audit(sa, audit_pre, cb);
 }
 
 /**