Messages in this thread | | | Subject | Re: [PATCH 4/8] writeback: track if we're sleeping on progress in balance_dirty_pages() | From | Jens Axboe <> | Date | Wed, 2 Nov 2016 08:59:20 -0600 |
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On 11/02/2016 08:57 AM, Christoph Hellwig wrote: > On Tue, Nov 01, 2016 at 03:08:47PM -0600, Jens Axboe wrote: >> Note in the bdi_writeback structure whenever a task ends up sleeping >> waiting for progress. We can use that information in the lower layers >> to increase the priority of writes. > > Do we need to care about atomicy of multiple threads updating the value > ? > > Otherwise this looks fine.
Don't think we have to care about it too much, it's a soft hint similar wb->dirty_exceeded.
-- Jens Axboe
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