Re: [PATCH 1/7] KAMEZAWA Hiroyuki hot-remove patches

On Mon, 18 Jun 2007, Mel Gorman wrote:

> @@ -632,18 +632,27 @@ static int unmap_and_move(new_page_t get
>  			goto unlock;
>  		wait_on_page_writeback(page);
>  	}
> -
> +	/* anon_vma should not be freed while migration. */
> +	if (PageAnon(page)) {
> +		rcu_read_lock();
> +		rcu_locked = 1;
> +	}

We agreed on doing rcu_read_lock removing the status variable 
and checking for PageAnon(). Doing so deuglifies the 
function.
-
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