On Fri, May 24, 2013 at 03:59:10PM +0530, Glauber Costa wrote: > From: Dave Chinner <dchinner@xxxxxxxxxx> > > Convert the buftarg LRU to use the new generic LRU list and take > advantage of the functionality it supplies to make the buffer cache > shrinker node aware. > > * v7: Add NUMA aware flag I know what is wrong with this patch that causes the unmount hang - it's the handling of the _XBF_LRU_DISPOSE flag no longer being modified atomically with the LRU lock. Hence there is a race where we can either lose the _XBF_LRU_DISPOSE or not see it and hence we can end up with code not detecting what list the buffer is on correctly. I haven't had a chance to work out a fix for it yet. If this ends up likely to hold up the patch set, Glauber, then feel free to drop it from the series and I'll push a fixed version through the XFS tree in due course.... Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>