Messages in this thread | | | Date | Wed, 5 Jan 2005 20:26:11 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH][5/?] count writeback pages in nr_scanned |
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Nick Piggin <nickpiggin@yahoo.com.au> wrote: > > > > > I suspect something might still be broken. It may take a few > > days of continuous testing to trigger the bug, though ... > > > > It is possible to be those blk_congestion_wait paths, because > the queue simply won't be congested. So doing io_schedule_timeout > might help.
If the queue is not congested, blk_congestion_wait() will still sleep. See freed_request().
> I wonder if reducing the size of the write queue in CFQ would help > too? IIRC, it only really wants a huge read queue.
Surely it will help - but we need to be able to handle the situation because memory can still become full of PageWriteback pages if there are many disks. - 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/
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