On Thu, 17 May 2007 06:47:53 +0800 Fengguang Wu <[EMAIL PROTECTED]> wrote:
> Introduce a new page flag: PG_readahead. Is there any way in which we can avoid adding a new page flag? We have the advantage that if the kernel very occasionally gets the wrong result for PageReadahead(page), nothing particularly bad will happen, so we can do racy things. >From a quick peek, it appears that PG_readahead is only ever set against non-uptodate pages. If true we could perhaps exploit that: say, PageReadahead(page) == PG_referenced && !PG_uptodate? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
