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Message-ID: <20080129220004.GB28690@redhat.com>
Date: Tue, 29 Jan 2008 16:00:04 -0600
From: David Teigland <teigland@...hat.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, fabbione@...ntu.com
Subject: Re: [PATCH 07/19] dlm: swap bytes for rcom lock reply
On Sat, Jan 26, 2008 at 10:00:29PM -0800, Andrew Morton wrote:
> > On Thu, 24 Jan 2008 10:50:30 -0600 David Teigland <teigland@...hat.com> wrote:
> > void dlm_rcom_in(struct dlm_rcom *rc)
> > {
> > struct dlm_header *hd = (struct dlm_header *) rc;
>
> aww, c'mon guys, this is nonsense.
>
> struct dlm_header *hd = &rc->rc_header;
>
> there seems to be rather a lot of this unnecessary casting going on in dlm.
> Please do a hunt-and-exterminate.
Most of the casting appears to involve either rc_buf in dlm_rcom, or
lkb_astparam in dlm_lkb. I don't see a way of changing the former, but a
union might improve the latter. I'll work on another patch for astparam,
but here's a quick one covering what's above.
>From 6bbb692117ff86d5a22a154b2b16bf16b8753629 Mon Sep 17 00:00:00 2001
From: David Teigland <teigland@...hat.com>
Date: Tue, 29 Jan 2008 14:52:10 -0600
Subject: [PATCH] dlm: clean ups
A couple small clean-ups. Remove unnecessary wrapper-functions in
rcom.c, and remove unnecessary casting and an unnecessary ASSERT in
util.c.
Signed-off-by: David Teigland <teigland@...hat.com>
---
fs/dlm/rcom.c | 25 +++++--------------------
fs/dlm/util.c | 16 +++++-----------
2 files changed, 10 insertions(+), 31 deletions(-)
diff --git a/fs/dlm/rcom.c b/fs/dlm/rcom.c
index ae2fd97..026824c 100644
--- a/fs/dlm/rcom.c
+++ b/fs/dlm/rcom.c
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
-** Copyright (C) 2005-2007 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -197,11 +197,6 @@ static void receive_sync_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)
spin_unlock(&ls->ls_rcom_spin);
}
-static void receive_rcom_status_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)
-{
- receive_sync_reply(ls, rc_in);
-}
-
int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len)
{
struct dlm_rcom *rc;
@@ -254,11 +249,6 @@ static void receive_rcom_names(struct dlm_ls *ls, struct dlm_rcom *rc_in)
send_rcom(ls, mh, rc);
}
-static void receive_rcom_names_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)
-{
- receive_sync_reply(ls, rc_in);
-}
-
int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid)
{
struct dlm_rcom *rc;
@@ -381,11 +371,6 @@ static void receive_rcom_lock(struct dlm_ls *ls, struct dlm_rcom *rc_in)
send_rcom(ls, mh, rc);
}
-static void receive_rcom_lock_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)
-{
- dlm_recover_process_copy(ls, rc_in);
-}
-
/* If the lockspace doesn't exist then still send a status message
back; it's possible that it just doesn't have its global_id yet. */
@@ -481,11 +466,11 @@ void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
break;
case DLM_RCOM_STATUS_REPLY:
- receive_rcom_status_reply(ls, rc);
+ receive_sync_reply(ls, rc);
break;
case DLM_RCOM_NAMES_REPLY:
- receive_rcom_names_reply(ls, rc);
+ receive_sync_reply(ls, rc);
break;
case DLM_RCOM_LOOKUP_REPLY:
@@ -493,11 +478,11 @@ void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
break;
case DLM_RCOM_LOCK_REPLY:
- receive_rcom_lock_reply(ls, rc);
+ dlm_recover_process_copy(ls, rc);
break;
default:
- DLM_ASSERT(0, printk("rc_type=%x\n", rc->rc_type););
+ log_error(ls, "receive_rcom bad type %d", rc->rc_type);
}
out:
return;
diff --git a/fs/dlm/util.c b/fs/dlm/util.c
index 11c6a45..4d9c1f4 100644
--- a/fs/dlm/util.c
+++ b/fs/dlm/util.c
@@ -1,7 +1,7 @@
/******************************************************************************
*******************************************************************************
**
-** Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -85,9 +85,7 @@ static int from_dlm_errno(int err)
void dlm_message_out(struct dlm_message *ms)
{
- struct dlm_header *hd = (struct dlm_header *) ms;
-
- header_out(hd);
+ header_out(&ms->m_header);
ms->m_type = cpu_to_le32(ms->m_type);
ms->m_nodeid = cpu_to_le32(ms->m_nodeid);
@@ -111,9 +109,7 @@ void dlm_message_out(struct dlm_message *ms)
void dlm_message_in(struct dlm_message *ms)
{
- struct dlm_header *hd = (struct dlm_header *) ms;
-
- header_in(hd);
+ header_in(&ms->m_header);
ms->m_type = le32_to_cpu(ms->m_type);
ms->m_nodeid = le32_to_cpu(ms->m_nodeid);
@@ -179,10 +175,9 @@ static void rcom_config_in(struct rcom_config *rf)
void dlm_rcom_out(struct dlm_rcom *rc)
{
- struct dlm_header *hd = (struct dlm_header *) rc;
int type = rc->rc_type;
- header_out(hd);
+ header_out(&rc->rc_header);
rc->rc_type = cpu_to_le32(rc->rc_type);
rc->rc_result = cpu_to_le32(rc->rc_result);
@@ -199,10 +194,9 @@ void dlm_rcom_out(struct dlm_rcom *rc)
void dlm_rcom_in(struct dlm_rcom *rc)
{
- struct dlm_header *hd = (struct dlm_header *) rc;
int type;
- header_in(hd);
+ header_in(&rc->rc_header);
rc->rc_type = le32_to_cpu(rc->rc_type);
rc->rc_result = le32_to_cpu(rc->rc_result);
--
1.5.3.3
--
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