Nick Piggin wrote:
Kirill Korotaev wrote:Charging the page to the container it was allocated in is a possible and
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.
correct way, we agree, but how does this comment refer to locked pages
accounting?