[PATCH v4 4/6] migration: Remove "rs" parameter in migration_bitmap_sync_precopy

[yong.huang@smartx.com]

From: Hyman Huang <yong.huang@smartx.com>

The global static variable ram_state in fact is referred to by the
"rs" parameter in migration_bitmap_sync_precopy. For ease of calling
by the callees, use the global variable directly in
migration_bitmap_sync_precopy and remove "rs" parameter.

The migration_bitmap_sync_precopy will be exported in the next commit.

Signed-off-by: Hyman Huang <yong.huang@smartx.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
---
 migration/ram.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/migration/ram.c b/migration/ram.c
index 54d352b152..9b5b350405 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -1088,9 +1088,10 @@ static void migration_bitmap_sync(RAMState *rs, bool last_stage)
     }
 }
 
-static void migration_bitmap_sync_precopy(RAMState *rs, bool last_stage)
+static void migration_bitmap_sync_precopy(bool last_stage)
 {
     Error *local_err = NULL;
+    assert(ram_state);
 
     /*
      * The current notifier usage is just an optimization to migration, so we
@@ -1101,7 +1102,7 @@ static void migration_bitmap_sync_precopy(RAMState *rs, bool last_stage)
         local_err = NULL;
     }
 
-    migration_bitmap_sync(rs, last_stage);
+    migration_bitmap_sync(ram_state, last_stage);
 
     if (precopy_notify(PRECOPY_NOTIFY_AFTER_BITMAP_SYNC, &local_err)) {
         error_report_err(local_err);
@@ -2782,7 +2783,7 @@ static bool ram_init_bitmaps(RAMState *rs, Error **errp)
             if (!ret) {
                 goto out_unlock;
             }
-            migration_bitmap_sync_precopy(rs, false);
+            migration_bitmap_sync_precopy(false);
         }
     }
 out_unlock:
@@ -3248,7 +3249,7 @@ static int ram_save_complete(QEMUFile *f, void *opaque)
 
     WITH_RCU_READ_LOCK_GUARD() {
         if (!migration_in_postcopy()) {
-            migration_bitmap_sync_precopy(rs, true);
+            migration_bitmap_sync_precopy(true);
         }
 
         ret = rdma_registration_start(f, RAM_CONTROL_FINISH);
@@ -3330,7 +3331,7 @@ static void ram_state_pending_exact(void *opaque, uint64_t *must_precopy,
     if (!migration_in_postcopy()) {
         bql_lock();
         WITH_RCU_READ_LOCK_GUARD() {
-            migration_bitmap_sync_precopy(rs, false);
+            migration_bitmap_sync_precopy(false);
         }
         bql_unlock();
     }
-- 
2.27.0