Re: [ckrm-tech] [PATCH 9/13] BC: locked pages (charge hooks)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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...

Thanks,
Kirill
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux