Messages in this thread |  | | Date | Wed, 06 Sep 2006 18:16:42 +0400 | From | Kirill Korotaev <> | Subject | Re: [ckrm-tech] [PATCH 9/13] BC: locked pages (charge hooks) |
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Nick,
> Kirill Korotaev wrote: > > >>Introduce calls to BC core over the kernel to charge locked memory. >> >>Normaly new locked piece of memory may appear in insert_vm_struct, >>but there are places (do_mmap_pgoff, dup_mmap etc) when new vma >>is not inserted by insert_vm_struct(), but either link_vma-ed or >>merged with some other - these places call BC code explicitly. >> >>Plus sys_mlock[all] itself has to be patched to charge/uncharge >>needed amount of pages. > > > > I still haven't heard your good reasons why such a complex scheme is > required when my really simple proposal of unconditionally charging > the page to the container it was allocated by. Nick can you elaborate what your proposal is? Probably I missed it somewhere...
> That has the benefit of not being full of user explotable holes and > also not putting such a huge burden on mm/ and the wider kernel in > general. I guess you will have to account locked pages still and thus complexity won't be reduced much in this regard...
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