[src/trunk]: src/sys Remove unused ext_flags field in struct _m_...

[maxv <maxv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/5a21518ab9af
branches:  trunk
changeset: 318512:5a21518ab9af
user:      maxv <maxv%NetBSD.org@localhost>
date:      Fri Apr 27 16:32:03 2018 +0000
description:
Remove unused ext_flags field in struct _m_ext_storage.

Also, simplify MEXTMALLOC, mbtypes[] doesn't exist anymore, but the code
still compiled correctly because "malloc" is a macro and the argument
was dropped.

diffstat:

 sys/kern/uipc_mbuf.c |  5 ++---
 sys/sys/mbuf.h       |  8 ++------
 2 files changed, 4 insertions(+), 9 deletions(-)

diffs (67 lines):

diff -r cf50bd5693bc -r 5a21518ab9af sys/kern/uipc_mbuf.c
--- a/sys/kern/uipc_mbuf.c      Fri Apr 27 16:18:40 2018 +0000
+++ b/sys/kern/uipc_mbuf.c      Fri Apr 27 16:32:03 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uipc_mbuf.c,v 1.207 2018/04/27 16:18:40 maxv Exp $     */
+/*     $NetBSD: uipc_mbuf.c,v 1.208 2018/04/27 16:32:03 maxv Exp $     */
 
 /*
  * Copyright (c) 1999, 2001 The NetBSD Foundation, Inc.
@@ -62,7 +62,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uipc_mbuf.c,v 1.207 2018/04/27 16:18:40 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uipc_mbuf.c,v 1.208 2018/04/27 16:32:03 maxv Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_mbuftrace.h"
@@ -588,7 +588,6 @@
        m->m_data = m->m_ext.ext_buf;
        m->m_flags = (m->m_flags & ~M_EXTCOPYFLAGS) |
            M_EXT|M_EXT_CLUSTER|M_EXT_RW;
-       m->m_ext.ext_flags = 0;
        m->m_ext.ext_size = MCLBYTES;
        m->m_ext.ext_free = NULL;
        m->m_ext.ext_arg = NULL;
diff -r cf50bd5693bc -r 5a21518ab9af sys/sys/mbuf.h
--- a/sys/sys/mbuf.h    Fri Apr 27 16:18:40 2018 +0000
+++ b/sys/sys/mbuf.h    Fri Apr 27 16:32:03 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: mbuf.h,v 1.196 2018/04/27 09:22:28 maxv Exp $  */
+/*     $NetBSD: mbuf.h,v 1.197 2018/04/27 16:32:03 maxv Exp $  */
 
 /*
  * Copyright (c) 1996, 1997, 1999, 2001, 2007 The NetBSD Foundation, Inc.
@@ -259,7 +259,6 @@
  */
 struct _m_ext_storage {
        unsigned int ext_refcnt;
-       int ext_flags;
        char *ext_buf;                  /* start of buffer */
        void (*ext_free)                /* free routine if not the usual */
                (struct mbuf *, void *, size_t, void *);
@@ -511,14 +510,12 @@
 
 #define        MEXTMALLOC(m, size, how)                                        \
 do {                                                                   \
-       (m)->m_ext_storage.ext_buf = (char *)                           \
-           malloc((size), mbtypes[(m)->m_type], (how));                \
+       (m)->m_ext_storage.ext_buf = malloc((size), 0, (how));          \
        if ((m)->m_ext_storage.ext_buf != NULL) {                       \
                MCLINITREFERENCE(m);                                    \
                (m)->m_data = (m)->m_ext.ext_buf;                       \
                (m)->m_flags = ((m)->m_flags & ~M_EXTCOPYFLAGS) |       \
                                M_EXT|M_EXT_RW;                         \
-               (m)->m_ext.ext_flags = 0;                               \
                (m)->m_ext.ext_size = (size);                           \
                (m)->m_ext.ext_free = NULL;                             \
                (m)->m_ext.ext_arg = NULL;                              \
@@ -531,7 +528,6 @@
        MCLINITREFERENCE(m);                                            \
        (m)->m_data = (m)->m_ext.ext_buf = (char *)(buf);               \
        (m)->m_flags = ((m)->m_flags & ~M_EXTCOPYFLAGS) | M_EXT;        \
-       (m)->m_ext.ext_flags = 0;                                       \
        (m)->m_ext.ext_size = (size);                                   \
        (m)->m_ext.ext_free = (free);                                   \
        (m)->m_ext.ext_arg = (arg);                                     \