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SubjectRe: [PATCH] drivers: xen-selfballoon: consider slab pages
On Mon, Nov 04, 2013 at 08:39:24PM +0800, Bob Liu wrote:
> Currently the goal_page in xen-selfballon doesn't consider much about pages used
> in kernel space.
> A typical usage is slab pages, without consider slab pages the goal_page result
> may be too rough and lead extra memory pressure to guest os.

Does "lead extra memory pressure" mean OOM?

>
> Signed-off-by: Bob Liu <bob.liu@oracle.com>
> ---
> drivers/xen/xen-selfballoon.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/xen/xen-selfballoon.c b/drivers/xen/xen-selfballoon.c
> index 21e18c1..4814759 100644
> --- a/drivers/xen/xen-selfballoon.c
> +++ b/drivers/xen/xen-selfballoon.c
> @@ -191,6 +191,8 @@ static void selfballoon_process(struct work_struct *work)
> tgt_pages = cur_pages; /* default is no change */
> goal_pages = vm_memory_committed() +
> totalreserve_pages +
> + global_page_state(NR_SLAB_RECLAIMABLE) +
> + global_page_state(NR_SLAB_UNRECLAIMABLE) +
> MB2PAGES(selfballoon_reserved_mb);
> #ifdef CONFIG_FRONTSWAP
> /* allow space for frontswap pages to be repatriated */
> --
> 1.7.10.4
>


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