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>
diff --git a/fs/dlm/requestqueue.c b/fs/dlm/requestqueue.c
index 0de04f1..daa4183 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 @@
* 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 @@
}
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 @@
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 @@
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);