Re: [Qemu-devel] [PATCH 1/3] migration/ram.c: start of migration_bitmap_sync_range is always 0

["Dr. David Alan Gilbert" <dgilbert@redhat.com>]

* Wei Yang (richardw.yang@linux.intel.com) wrote:
> We can eliminate to pass 0.
> 
> Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

> ---
>  migration/ram.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/migration/ram.c b/migration/ram.c
> index 35bd6213e9..9948b2d021 100644
> --- a/migration/ram.c
> +++ b/migration/ram.c
> @@ -1643,10 +1643,10 @@ static inline bool migration_bitmap_clear_dirty(RAMState *rs,
>  }
>  
>  static void migration_bitmap_sync_range(RAMState *rs, RAMBlock *rb,
> -                                        ram_addr_t start, ram_addr_t length)
> +                                        ram_addr_t length)
>  {
>      rs->migration_dirty_pages +=
> -        cpu_physical_memory_sync_dirty_bitmap(rb, start, length,
> +        cpu_physical_memory_sync_dirty_bitmap(rb, 0, length,
>                                                &rs->num_dirty_pages_period);
>  }
>  
> @@ -1735,7 +1735,7 @@ static void migration_bitmap_sync(RAMState *rs)
>      qemu_mutex_lock(&rs->bitmap_mutex);
>      rcu_read_lock();
>      RAMBLOCK_FOREACH_NOT_IGNORED(block) {
> -        migration_bitmap_sync_range(rs, block, 0, block->used_length);
> +        migration_bitmap_sync_range(rs, block, block->used_length);
>      }
>      ram_counters.remaining = ram_bytes_remaining();
>      rcu_read_unlock();
> @@ -4156,7 +4156,7 @@ static void colo_flush_ram_cache(void)
>      memory_global_dirty_log_sync();
>      rcu_read_lock();
>      RAMBLOCK_FOREACH_NOT_IGNORED(block) {
> -        migration_bitmap_sync_range(ram_state, block, 0, block->used_length);
> +        migration_bitmap_sync_range(ram_state, block, block->used_length);
>      }
>      rcu_read_unlock();
>  
> -- 
> 2.19.1
> 
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK