On Wed, 10 Aug 2011 11:47:19 +0100 Mel Gorman <mgorman@xxxxxxx> wrote: > The percentage that must be in writeback depends on the priority. At > default priority, all of them must be dirty. At DEF_PRIORITY-1, 50% > of them must be, DEF_PRIORITY-2, 25% etc. i.e. as pressure increases > the greater the likelihood the process will get throttled to allow > the flusher threads to make some progress. It'd be nice if the code comment were to capture this piece of implicit arithmetic. After all, it's a magic number and magic numbers should stick out like sore thumbs. And.. how do we know that the chosen magic numbers were optimal? _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
