On Wed, 24 Oct 2012 23:06:00 +0200 Borislav Petkov <bp@xxxxxxxxx> wrote: > On Wed, Oct 24, 2012 at 01:48:36PM -0700, Andrew Morton wrote: > > Well who knows. Could be that people's vm *does* suck. Or they have > > some particularly peculiar worklosd or requirement[*]. Or their VM > > *used* to suck, and the drop_caches is not really needed any more but > > it's there in vendor-provided code and they can't practically prevent > > it. > > I have drop_caches in my suspend-to-disk script so that the hibernation > image is kept at minimum and suspend times are as small as possible. hm, that sounds smart. > Would that be a valid use-case? I'd say so, unless we change the kernel to do that internally. We do have the hibernation-specific shrink_all_memory() in the vmscan code. We didn't see fit to document _why_ that exists, but IIRC it's there to create enough free memory for hibernation to be able to successfully complete, but no more. Who owns hibernaton nowadays? Rafael, I guess? -- 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>