Re: [patch 9/21] batched addition of pages to the LRU

Andrew Morton (akpm@zip.com.au)
Sun, 11 Aug 2002 22:51:19 -0700


Rik van Riel wrote:
>
> On Sun, 11 Aug 2002, Andrew Morton wrote:
>
> > And it only takes one dirty block! Any LRU page which is dirty
> > against a blocked queue is like a hand grenade floating
> > down a stream [1]. If some innocent task tries to write that
> > page it gets DoSed via the request queue.
>
> This is exactly why we shouldn't wait on dirty pages in
> the pageout path.

It's not the wait-on-writeback which is the problem. It's
the writeout. Perhaps that's what you meant.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/