qemu/0108-migration-move-more-error-handling-to-migrate_fd_cle.patch

From b259853dce28b7a8e0efe6bfedc7850821c8c76b Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Fri, 22 Feb 2013 17:36:09 +0100
Subject: [PATCH] migration: move more error handling to migrate_fd_cleanup

The next patch will add more cases where qemu_savevm_state_cancel
needs to be called; prepare for that already, the function can be
called twice with no ill effect.

Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
(cherry picked from commit 7a2c17216cd5ae4c22844123b8e9360d517932f8)
---
 migration.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/migration.c b/migration.c
index d601641..739e38c 100644
--- a/migration.c
+++ b/migration.c
@@ -260,7 +260,7 @@ void qmp_migrate_set_capabilities(MigrationCapabilityStatusList *params,
 
 /* shared migration helpers */
 
-static int migrate_fd_cleanup(MigrationState *s)
+static void migrate_fd_cleanup(MigrationState *s)
 {
     int ret = 0;
 
@@ -271,7 +271,13 @@ static int migrate_fd_cleanup(MigrationState *s)
     }
 
     assert(s->fd == -1);
-    return ret;
+    if (ret < 0 && s->state == MIG_STATE_ACTIVE) {
+        s->state = MIG_STATE_ERROR;
+    }
+
+    if (s->state != MIG_STATE_ACTIVE) {
+        qemu_savevm_state_cancel();
+    }
 }
 
 void migrate_fd_error(MigrationState *s)
@@ -285,9 +291,8 @@ void migrate_fd_error(MigrationState *s)
 static void migrate_fd_completed(MigrationState *s)
 {
     DPRINTF("setting completed state\n");
-    if (migrate_fd_cleanup(s) < 0) {
-        s->state = MIG_STATE_ERROR;
-    } else {
+    migrate_fd_cleanup(s);
+    if (s->state == MIG_STATE_ACTIVE) {
         s->state = MIG_STATE_COMPLETED;
         runstate_set(RUN_STATE_POSTMIGRATE);
     }
@@ -322,7 +327,6 @@ static void migrate_fd_cancel(MigrationState *s)
 
     s->state = MIG_STATE_CANCELLED;
     notifier_list_notify(&migration_state_notifiers, s);
-    qemu_savevm_state_cancel();
 
     migrate_fd_cleanup(s);
 }