On Tue, Nov 6, 2018 at 2:52 AM Dave Hansen wrote:
>
> On 11/5/18 3:13 AM, Kuo-Hsin Yang wrote:
> > -These are currently used in two places in the kernel:
> > +These are currently used in three places in the kernel:
> >
> > (1) By ramfs to mark the address spaces of its inodes when they are
> >
On Tue, Nov 6, 2018 at 12:41 AM Michal Hocko wrote:
> On Mon 05-11-18 22:33:13, Kuo-Hsin Yang wrote:
> > OK, this function should not be specific to shmem pages.
> >
> > Is it OK to remove the #ifdef SHMEM surrounding
> > check_move_unevictable_pages?
>
> Yes, I think so.
Thanks for you review.
On 11/5/18 3:13 AM, Kuo-Hsin Yang wrote:
> -These are currently used in two places in the kernel:
> +These are currently used in three places in the kernel:
>
> (1) By ramfs to mark the address spaces of its inodes when they are created,
> and this mark remains for the life of the inode.
On Mon 05-11-18 22:33:13, Kuo-Hsin Yang wrote:
> On Mon, Nov 5, 2018 at 9:02 PM Michal Hocko wrote:
> >
> > On Mon 05-11-18 19:13:48, Kuo-Hsin Yang wrote:
[...]
> > > + * @pvec: pagevec with pages to check
> > > *
> > > - * Checks pages for evictability and moves them to the appropriate lru
> >
On Mon, Nov 5, 2018 at 9:02 PM Michal Hocko wrote:
>
> On Mon 05-11-18 19:13:48, Kuo-Hsin Yang wrote:
> > The i915 driver uses shmemfs to allocate backing storage for gem
> > objects. These shmemfs pages can be pinned (increased ref count) by
> > shmem_read_mapping_page_gfp(). When a lot of pages
On Mon 05-11-18 14:02:09, Michal Hocko wrote:
> On Mon 05-11-18 19:13:48, Kuo-Hsin Yang wrote:
> > The i915 driver uses shmemfs to allocate backing storage for gem
> > objects. These shmemfs pages can be pinned (increased ref count) by
> > shmem_read_mapping_page_gfp(). When a lot of pages are pinn
On Mon 05-11-18 19:13:48, Kuo-Hsin Yang wrote:
> The i915 driver uses shmemfs to allocate backing storage for gem
> objects. These shmemfs pages can be pinned (increased ref count) by
> shmem_read_mapping_page_gfp(). When a lot of pages are pinned, vmscan
> wastes a lot of time scanning these pinne
The i915 driver uses shmemfs to allocate backing storage for gem
objects. These shmemfs pages can be pinned (increased ref count) by
shmem_read_mapping_page_gfp(). When a lot of pages are pinned, vmscan
wastes a lot of time scanning these pinned pages. In some extreme case,
all pages in the inactiv
