On Thu, Aug 05, 2010 at 03:12:22PM +0900, KOSAKI Motohiro wrote: > From: Wu Fengguang <fengguang.wu@xxxxxxxxx> > > Fix "system goes unresponsive under memory pressure and lots of > dirty/writeback pages" bug. > > http://lkml.org/lkml/2010/4/4/86 > > In the above thread, Andreas Mohr described that > > Invoking any command locked up for minutes (note that I'm > talking about attempted additional I/O to the _other_, > _unaffected_ main system HDD - such as loading some shell > binaries -, NOT the external SSD18M!!). > > This happens when the two conditions are both meet: > - under memory pressure > - writing heavily to a slow device > > <SNIP> Other than an unnecessary whitespace removal at the end of the patch, I see no problem with letting this patch stand on it's own as we are reasonably sure this patch fixes a problem on its own. Patches 2-7 might further improve the situation but can be considered as a new series. This patch (as well as most of the series) will reject against current mmotm because of other reclaim-related patches already in there. The resolutions are not too hard but bear it in mind. > <SNIP> -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>