shmat(2): move compat to native

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

ipc/compat.c

@@ -80,22 +80,6 @@ void to_compat_ipc_perm(struct compat_ipc_perm *to, struct ipc64_perm *from)
 	to->seq = from->seq;
 }
 
-#ifndef COMPAT_SHMLBA
-#define COMPAT_SHMLBA	SHMLBA
-#endif
-
-COMPAT_SYSCALL_DEFINE3(shmat, int, shmid, compat_uptr_t, shmaddr, int, shmflg)
-{
-	unsigned long ret;
-	long err;
-
-	err = do_shmat(shmid, compat_ptr(shmaddr), shmflg, &ret, COMPAT_SHMLBA);
-	if (err)
-		return err;
-	force_successful_syscall_return();
-	return (long)ret;
-}
-
 COMPAT_SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsems,
 		       unsigned, nsops,
 		       const struct compat_timespec __user *, timeout)

ipc/shm.c

@@ -1439,6 +1439,25 @@ SYSCALL_DEFINE3(shmat, int, shmid, char __user *, shmaddr, int, shmflg)
 	return (long)ret;
 }
 
+#ifdef CONFIG_COMPAT
+
+#ifndef COMPAT_SHMLBA
+#define COMPAT_SHMLBA	SHMLBA
+#endif
+
+COMPAT_SYSCALL_DEFINE3(shmat, int, shmid, compat_uptr_t, shmaddr, int, shmflg)
+{
+	unsigned long ret;
+	long err;
+
+	err = do_shmat(shmid, compat_ptr(shmaddr), shmflg, &ret, COMPAT_SHMLBA);
+	if (err)
+		return err;
+	force_successful_syscall_return();
+	return (long)ret;
+}
+#endif
+
 /*
  * detach and kill segment if marked destroyed.
  * The work is done in shm_close.