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[DLM] split create_message function

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This splits the current create_message() function into two parts so that
later patches can call the new lower-level _create_message() function when
they don't have an rsb struct.  No functional change in this patch.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
David Teigland 2007-04-02 09:06:41 -05:00 committed by Steven Whitehouse
parent f01963f264
commit 7e4dac3359
1 changed files with 36 additions and 26 deletions
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62
fs/dlm/lock.c
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@ -2301,14 +2301,45 @@ int dlm_unlock(dlm_lockspace_t *lockspace,
* receive_lookup_reply send_lookup_reply
*/
static int _create_message(struct dlm_ls *ls, int mb_len,
int to_nodeid, int mstype,
struct dlm_message **ms_ret,
struct dlm_mhandle **mh_ret)
{
struct dlm_message *ms;
struct dlm_mhandle *mh;
char *mb;
/* get_buffer gives us a message handle (mh) that we need to
pass into lowcomms_commit and a message buffer (mb) that we
write our data into */
mh = dlm_lowcomms_get_buffer(to_nodeid, mb_len, GFP_KERNEL, &mb);
if (!mh)
return -ENOBUFS;
memset(mb, 0, mb_len);
ms = (struct dlm_message *) mb;
ms->m_header.h_version = (DLM_HEADER_MAJOR | DLM_HEADER_MINOR);
ms->m_header.h_lockspace = ls->ls_global_id;
ms->m_header.h_nodeid = dlm_our_nodeid();
ms->m_header.h_length = mb_len;
ms->m_header.h_cmd = DLM_MSG;
ms->m_type = mstype;
*mh_ret = mh;
*ms_ret = ms;
return 0;
}
static int create_message(struct dlm_rsb *r, struct dlm_lkb *lkb,
int to_nodeid, int mstype,
struct dlm_message **ms_ret,
struct dlm_mhandle **mh_ret)
{
struct dlm_message *ms;
struct dlm_mhandle *mh;
char *mb;
int mb_len = sizeof(struct dlm_message);
switch (mstype) {
@ -2327,29 +2358,8 @@ static int create_message(struct dlm_rsb *r, struct dlm_lkb *lkb,
break;
}
/* get_buffer gives us a message handle (mh) that we need to
pass into lowcomms_commit and a message buffer (mb) that we
write our data into */
mh = dlm_lowcomms_get_buffer(to_nodeid, mb_len, GFP_KERNEL, &mb);
if (!mh)
return -ENOBUFS;
memset(mb, 0, mb_len);
ms = (struct dlm_message *) mb;
ms->m_header.h_version = (DLM_HEADER_MAJOR | DLM_HEADER_MINOR);
ms->m_header.h_lockspace = r->res_ls->ls_global_id;
ms->m_header.h_nodeid = dlm_our_nodeid();
ms->m_header.h_length = mb_len;
ms->m_header.h_cmd = DLM_MSG;
ms->m_type = mstype;
*mh_ret = mh;
*ms_ret = ms;
return 0;
return _create_message(r->res_ls, mb_len, to_nodeid, mstype,
ms_ret, mh_ret);
}
/* further lowcomms enhancements or alternate implementations may make