Re: [PATCH 3/5] writeback: stop background/kupdate works fromlivelocking other works

[Wu Fengguang]

Jan, the below comment is also updated, please double check.

>  
>  		/*
> +		 * Background writeout and kupdate-style writeback may
> +		 * run forever. Stop them if there is other work to do
> +		 * so that e.g. sync can proceed. They'll be restarted
> +		 * after the other works are all done.
> +		 */
> +		if ((work->for_background || work->for_kupdate) &&
> +		    !list_empty(&wb->bdi->work_list))
> +			break;
> +
> +		/*
>  		 * For background writeout, stop when we are below the
>  		 * background dirty threshold
>  		 */
> 
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