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authorAl Viro <viro@zeniv.linux.org.uk>2008-01-25 08:28:28 +0300
committerDavid Teigland <teigland@redhat.com>2008-02-04 10:21:32 +0300
commit8b0d8e03f847d9c1677b8a193cd124debbc54633 (patch)
treee2b63705b4a4901f827c92f47acff9abd26875b8 /fs/dlm
parent8af03e782cae1e0a0f530ddd22301cdd12cf9dc0 (diff)
downloadlinux-8b0d8e03f847d9c1677b8a193cd124debbc54633.tar.xz
dlm: use proper C for dlm/requestqueue stuff (and fix alignment bug)
a) don't cast the pointer to dlm_header *, we use it as dlm_message * anyway. b) we copy the message into a queue element, then pass the pointer to copy to dlm_receive_message_saved(); declare it properly to make sure that we have the right alignment. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'fs/dlm')
-rw-r--r--fs/dlm/lock.c2
-rw-r--r--fs/dlm/requestqueue.c12
-rw-r--r--fs/dlm/requestqueue.h2
3 files changed, 8 insertions, 8 deletions
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index ff4a198fa677..d9f07a42e3cf 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -3802,7 +3802,7 @@ static void dlm_receive_message(struct dlm_ls *ls, struct dlm_message *ms,
int nodeid)
{
if (dlm_locking_stopped(ls)) {
- dlm_add_requestqueue(ls, nodeid, (struct dlm_header *) ms);
+ dlm_add_requestqueue(ls, nodeid, ms);
} else {
dlm_wait_requestqueue(ls);
_receive_message(ls, ms);
diff --git a/fs/dlm/requestqueue.c b/fs/dlm/requestqueue.c
index 0de04f17ccea..daa4183fbb84 100644
--- a/fs/dlm/requestqueue.c
+++ b/fs/dlm/requestqueue.c
@@ -20,7 +20,7 @@
struct rq_entry {
struct list_head list;
int nodeid;
- char request[0];
+ struct dlm_message request;
};
/*
@@ -30,10 +30,10 @@ struct rq_entry {
* lockspace is enabled on some while still suspended on others.
*/
-void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_header *hd)
+void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_message *ms)
{
struct rq_entry *e;
- int length = hd->h_length;
+ int length = ms->m_header.h_length - sizeof(struct dlm_message);
e = kmalloc(sizeof(struct rq_entry) + length, GFP_KERNEL);
if (!e) {
@@ -42,7 +42,7 @@ void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_header *hd)
}
e->nodeid = nodeid;
- memcpy(e->request, hd, length);
+ memcpy(&e->request, ms, ms->m_header.h_length);
mutex_lock(&ls->ls_requestqueue_mutex);
list_add_tail(&e->list, &ls->ls_requestqueue);
@@ -76,7 +76,7 @@ int dlm_process_requestqueue(struct dlm_ls *ls)
e = list_entry(ls->ls_requestqueue.next, struct rq_entry, list);
mutex_unlock(&ls->ls_requestqueue_mutex);
- dlm_receive_message_saved(ls, (struct dlm_message *)e->request);
+ dlm_receive_message_saved(ls, &e->request);
mutex_lock(&ls->ls_requestqueue_mutex);
list_del(&e->list);
@@ -176,7 +176,7 @@ void dlm_purge_requestqueue(struct dlm_ls *ls)
mutex_lock(&ls->ls_requestqueue_mutex);
list_for_each_entry_safe(e, safe, &ls->ls_requestqueue, list) {
- ms = (struct dlm_message *) e->request;
+ ms = &e->request;
if (purge_request(ls, ms, e->nodeid)) {
list_del(&e->list);
diff --git a/fs/dlm/requestqueue.h b/fs/dlm/requestqueue.h
index aba34fc05ee4..10ce449b77da 100644
--- a/fs/dlm/requestqueue.h
+++ b/fs/dlm/requestqueue.h
@@ -13,7 +13,7 @@
#ifndef __REQUESTQUEUE_DOT_H__
#define __REQUESTQUEUE_DOT_H__
-void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_header *hd);
+void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_message *ms);
int dlm_process_requestqueue(struct dlm_ls *ls);
void dlm_wait_requestqueue(struct dlm_ls *ls);
void dlm_purge_requestqueue(struct dlm_ls *ls);