#include "ldlm_internal.h"
#ifdef HAVE_SERVER_SUPPORT
+/*
+ * local lock will be canceled after use, and it should run blocking ast only
+ * when it should trigger Commit-on-Sharing, otherwise if the blocking ast
+ * is run and does nothing, it will prevent subsequent operations to trigger
+ * Commit-on-Sharing, see LU-11102.
+ */
+static bool ldlm_should_run_bl_ast(const struct ldlm_lock *lock,
+ const struct ldlm_lock *req)
+{
+ /* no blocking ast */
+ if (!lock->l_blocking_ast)
+ return false;
+
+ /* not local lock */
+ if (!ldlm_is_local(lock))
+ return true;
+
+ /* should trigger Commit-on-Sharing */
+ if ((lock->l_req_mode & LCK_COS))
+ return true;
+
+ /* local read lock will be canceld after use */
+ if (!(lock->l_req_mode & (LCK_PW | LCK_EX)))
+ return false;
+
+ /* if CoS enabled, check if @req is from different client */
+ if (ldlm_is_cos_enabled(req))
+ return lock->l_client_cookie != req->l_client_cookie;
+
+ /* check if @req is COS incompatible */
+ if (ldlm_is_cos_incompat(req))
+ return true;
+
+ return false;
+}
+
/**
* Determine if the lock is compatible with all locks on the queue.
*
/* Add locks of the policy group to @work_list
* as blocking locks for @req */
- if (lock->l_blocking_ast)
+ if (ldlm_should_run_bl_ast(lock, req))
ldlm_add_ast_work_item(lock, req,
work_list);
head = &lock->l_sl_policy;
list_for_each_entry(lock, head, l_sl_policy)
- if (lock->l_blocking_ast)
+ if (ldlm_should_run_bl_ast(lock, req))
ldlm_add_ast_work_item(lock,
req, work_list);
}