On Wed, May 21, 2014 at 12:34:46PM -0700, Andrew Morton wrote: > On Wed, 21 May 2014 22:04:22 +0300 "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> wrote: > > > Currently we split all THP pages on any clear_refs request. It's not > > necessary. We can handle this on PMD level. > > > > One side effect is that soft dirty will potentially see more dirty > > memory, since we will mark whole THP page dirty at once. > > This clashes pretty badly with > http://ozlabs.org/~akpm/mmots/broken-out/clear_refs-redefine-callback-functions-for-page-table-walker.patch > > > Sanity checked with CRIU test suite. More testing is required. > > Will you be doing that testing or was this a request for Cyrill & co to > help? We've talking to Kirill how to test is and end up that criu is the best candidate (though I think I'll write selftest for vanilla too, hopefully tomorrow). -- 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>