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ocfs2: Break out stackglue into modules.

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We define the ocfs2_stack_plugin structure to represent a stack driver.
The o2cb stack code is split into stack_o2cb.c.  This becomes the
ocfs2_stack_o2cb.ko module.

The stackglue generic functions are similarly split into the
ocfs2_stackglue.ko module.  This module now provides an interface to
register drivers.  The ocfs2_stack_o2cb driver registers itself.  As
part of this interface, ocfs2_stackglue can load drivers on demand.
This is accomplished in ocfs2_cluster_connect().

ocfs2_cluster_disconnect() is now notified when a _hangup() is pending.
If a hangup is pending, it will not release the driver module and will
let _hangup() do that.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
This commit is contained in:
Joel Becker
2008-02-01 15:03:57 -08:00
committed by Mark Fasheh
parent e3dad42bf9
commit 286eaa95c5
7 changed files with 299 additions and 52 deletions
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7
fs/ocfs2/dlmglue.c
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@@ -2641,7 +2641,7 @@ int ocfs2_dlm_init(struct ocfs2_super *osb)
mlog_errno(status);
mlog(ML_ERROR,
"could not find this host's node number\n");
ocfs2_cluster_disconnect(conn);
ocfs2_cluster_disconnect(conn, 0);
goto bail;
}
@@ -2663,7 +2663,8 @@ bail:
return status;
}
void ocfs2_dlm_shutdown(struct ocfs2_super *osb)
void ocfs2_dlm_shutdown(struct ocfs2_super *osb,
int hangup_pending)
{
mlog_entry_void();
@@ -2683,7 +2684,7 @@ void ocfs2_dlm_shutdown(struct ocfs2_super *osb)
ocfs2_lock_res_free(&osb->osb_super_lockres);
ocfs2_lock_res_free(&osb->osb_rename_lockres);
ocfs2_cluster_disconnect(osb->cconn);
ocfs2_cluster_disconnect(osb->cconn, hangup_pending);
osb->cconn = NULL;
ocfs2_dlm_shutdown_debug(osb);