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