[PATCH 11/11] migration/multifd: Remove unnecessary usage of local Error

Avihai Horon posted 11 patches 11 months ago
Maintainers: Juan Quintela <quintela@redhat.com>, Peter Xu <peterx@redhat.com>, Fabiano Rosas <farosas@suse.de>, Leonardo Bras <leobras@redhat.com>, Li Zhijian <lizhijian@fujitsu.com>
[PATCH 11/11] migration/multifd: Remove unnecessary usage of local Error
Posted by Avihai Horon 11 months ago
According to Error API, usage of ERRP_GUARD() or a local Error instead
of errp is needed if errp is passed to void functions, where it is later
dereferenced to see if an error occurred.

There are several places in multifd.c that use local Error although it
is not needed. Change these places to use errp directly.

Signed-off-by: Avihai Horon <avihaih@nvidia.com>
---
 migration/multifd.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/migration/multifd.c b/migration/multifd.c
index 9ac24866ad..9f353aecfa 100644
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -951,12 +951,10 @@ int multifd_save_setup(Error **errp)
 
     for (i = 0; i < thread_count; i++) {
         MultiFDSendParams *p = &multifd_send_state->params[i];
-        Error *local_err = NULL;
         int ret;
 
-        ret = multifd_send_state->ops->send_setup(p, &local_err);
+        ret = multifd_send_state->ops->send_setup(p, errp);
         if (ret) {
-            error_propagate(errp, local_err);
             return ret;
         }
     }
@@ -1195,12 +1193,10 @@ int multifd_load_setup(Error **errp)
 
     for (i = 0; i < thread_count; i++) {
         MultiFDRecvParams *p = &multifd_recv_state->params[i];
-        Error *local_err = NULL;
         int ret;
 
-        ret = multifd_recv_state->ops->recv_setup(p, &local_err);
+        ret = multifd_recv_state->ops->recv_setup(p, errp);
         if (ret) {
-            error_propagate(errp, local_err);
             return ret;
         }
     }
-- 
2.26.3
Re: [PATCH 11/11] migration/multifd: Remove unnecessary usage of local Error
Posted by Philippe Mathieu-Daudé 10 months, 4 weeks ago
On 31/12/23 10:30, Avihai Horon wrote:
> According to Error API, usage of ERRP_GUARD() or a local Error instead
> of errp is needed if errp is passed to void functions, where it is later
> dereferenced to see if an error occurred.
> 
> There are several places in multifd.c that use local Error although it
> is not needed. Change these places to use errp directly.
> 
> Signed-off-by: Avihai Horon <avihaih@nvidia.com>
> ---
>   migration/multifd.c | 8 ++------
>   1 file changed, 2 insertions(+), 6 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>