On Tue, Feb 11, 2014 at 1:39 PM, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > hm, we tried that a couple of times, many years ago. Try > https://www.google.com/#q="faultahead"; then spend a frustrating hour > trying to work out what went wrong. > > Of course, the implementation might have been poor and perhaps we can > get this to work. Kirill's patch looks good, and shouldn't have much overhead, but the fact that it doesn't work is obviously something of a strike against it.. ;) I don't see anything obviously wrong in it, although I think 32 fault-around pages might be excessive (it uses stack space, and there are expenses wrt accounting and tear-down). But the patch is also against some odd kernel (presumably -mm) with lots of other changes, so I don't even know what it might be missing. Linus -- 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>