On Tue, 27 May 2014, Peter Zijlstra wrote: > The things I care about for VM_PINNED are long term pins, like the IB > stuff, which sets up its RDMA buffers at the start of a program and > basically leaves them in place for the entire duration of said program. Ok that also means the pages are not to be allocated from ZONE_MOVABLE? I expected the use of a page flag. With a vma flag we may have a situation that mapping a page into a vma changes it to pinned and terminating a process may unpin a page. That means the zone that the page should be allocated from changes. Pinned pages in ZONE_MOVABLE are not a good idea. But since "kernelcore" is rarely used maybe that is not an issue? -- 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>