Hello Marcelo, On Fri, Mar 11, 2005 at 01:04:13PM -0300, Marcelo Tosatti wrote: > Out of curiosity, that was SuSE not mainline ?
yep. > Do we really want to limit dirty cache to low mem on HIGHIO capable > machines? I'm afraid doing so might hurt performance on such systems. > > I think it might be wise to have nr_free_buffer_pages() take highmem > into account if CONFIG_HIGHIO is set ? The problem is the buffercache/blkdev-pagecache: it simply can't go in highmem. A similar fix happened recently in 2.6 for the same reasons, but in 2.6 we allowed it with some logic specific for the blkdev-pagecache. nr_free_buffer_pages() was never intended to take highmem into account, that's why there's the GFP_USER thing already, except we didn't loop into the zonelist, so I didn't try to make a fix similar to 2.6. - 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/
