dlm: use workqueue for callbacks

Instead of creating our own kthread (dlm_astd) to deliver
callbacks for all lockspaces, use a per-lockspace workqueue
to deliver the callbacks.  This eliminates complications and
slowdowns from many lockspaces sharing the same thread.

Signed-off-by: David Teigland <teigland@redhat.com>

1 files changed, 8 insertions, 7 deletions

diff --git a/fs/dlm/ast.h b/fs/dlm/ast.h
index 8aa89c9..757b551 100644
--- a/fs/dlm/ast.h
+++ b/fs/dlm/ast.h
@@ -18,14 +18,15 @@ int dlm_add_lkb_callback(struct dlm_lkb *lkb, uint32_t flags, int mode,
                          int status, uint32_t sbflags, uint64_t seq);
 int dlm_rem_lkb_callback(struct dlm_ls *ls, struct dlm_lkb *lkb,
                          struct dlm_callback *cb, int *resid);
-void dlm_add_ast(struct dlm_lkb *lkb, uint32_t flags, int mode, int status,
-		 uint32_t sbflags);
+void dlm_add_cb(struct dlm_lkb *lkb, uint32_t flags, int mode, int status,
+                uint32_t sbflags);
 
-void dlm_astd_wake(void);
-int dlm_astd_start(void);
-void dlm_astd_stop(void);
-void dlm_astd_suspend(void);
-void dlm_astd_resume(void);
+void dlm_callback_work(struct work_struct *work);
+int dlm_callback_start(struct dlm_ls *ls);
+void dlm_callback_stop(struct dlm_ls *ls);
+void dlm_callback_suspend(struct dlm_ls *ls);
+void dlm_callback_resume(struct dlm_ls *ls);
 
 #endif
 
+