From 175e63c9829f9887c04bed8e0c4906e1166c9a87 Mon Sep 17 00:00:00 2001 From: Fabiano Rosas Date: Thu, 12 Oct 2023 11:06:47 -0300 Subject: [PATCH] migration/multifd: Stop checking p->quit in multifd_send_thread We don't need to check p->quit in the multifd_send_thread() because it is shadowed by the 'exiting' flag. Ever since that flag was added p->quit became obsolete as a way to stop the thread. Since p->quit is set at multifd_send_terminate_threads() under the p->mutex lock, the thread will only see it once it loops, so 'exiting' will always be seen first. Note that setting p->quit at multifd_send_terminate_threads() still makes sense because we need a way to inform multifd_send_pages() that the channel has stopped. Signed-off-by: Fabiano Rosas Reviewed-by: Juan Quintela Signed-off-by: Juan Quintela Message-ID: <20231012140651.13122-3-farosas@suse.de> --- migration/multifd.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/migration/multifd.c b/migration/multifd.c index 1fe53d3b98..e2a45c667a 100644 --- a/migration/multifd.c +++ b/migration/multifd.c @@ -743,9 +743,6 @@ static void *multifd_send_thread(void *opaque) if (flags & MULTIFD_FLAG_SYNC) { qemu_sem_post(&p->sem_sync); } - } else if (p->quit) { - qemu_mutex_unlock(&p->mutex); - break; } else { qemu_mutex_unlock(&p->mutex); /* sometimes there are spurious wakeups */ -- 2.11.0