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Re: [Qemu-devel] [PATCH] migration: update comments of migration bitmap


From: Dr. David Alan Gilbert
Subject: Re: [Qemu-devel] [PATCH] migration: update comments of migration bitmap
Date: Tue, 14 May 2019 15:35:45 +0100
User-agent: Mutt/1.11.4 (2019-03-13)

* Yi Wang (address@hidden) wrote:
> Since the ram bitmap and the unsent bitmap are split by RAMBlock
> in commit 6b6712e, it's better to update the comments about them.
> 
> Signed-off-by: Yi Wang <address@hidden>

Queued

> ---
>  migration/ram.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/migration/ram.c b/migration/ram.c
> index 1ca9ba7..24ab23d 100644
> --- a/migration/ram.c
> +++ b/migration/ram.c
> @@ -1630,8 +1630,6 @@ static int save_xbzrle_page(RAMState *rs, uint8_t 
> **current_data,
>  /**
>   * migration_bitmap_find_dirty: find the next dirty page from start
>   *
> - * Called with rcu_read_lock() to protect migration_bitmap
> - *
>   * Returns the byte offset within memory region of the start of a dirty page
>   *
>   * @rs: current RAM state
> @@ -2681,7 +2679,7 @@ static void ram_save_cleanup(void *opaque)
>      RAMBlock *block;
>  
>      /* caller have hold iothread lock or is in a bh, so there is
> -     * no writing race against this migration_bitmap
> +     * no writing race against the migration bitmap
>       */
>      memory_global_dirty_log_stop();
>  
> -- 
> 1.8.3.1
> 
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK



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