Re: [Devel] [PATCH 6/6] BC: kernel memory accounting (marks)

[Kirill Korotaev <dev@sw.ru>]

Dave Hansen wrote:
> I'm still a bit concerned about if we actually need the 'struct page'
> pointer.  I've gone through all of the users, and I'm not sure that I
> see any that _require_ having a pointer in 'struct page'.  I think it
> will take some rework, especially with the pagetables, but it should be
> quite doable.
don't worry:
1. we will introduce a separate patch moving this pointer
  into mirroring array
2. this pointer is still required for _user_ pages tracking,
  that's why I don't follow your suggestion right now...

> vmalloc:
> 	Store in vm_struct
> fd_set_bits:
> poll_get:
> mount hashtable:
> 	Don't need alignment.  use the slab?
> pagetables:
> 	either store in an extra field of 'struct page', or use the
> 	mm's.  mm should always be available when alloc/freeing a
> 	pagetable page
> 
> Did I miss any?
flocks, pipe buffers, task_struct, sighand, signal, vmas,
posix timers, uid_cache, shmem dirs, 

Thanks,
Kirill