When a graphics heavy application is running, i915 driver may pin a lot of shmemfs pages and vmscan slows down significantly by scanning these pinned pages. This patch is an alternative to the patch by Chris Wilson [1]. As i915 driver pins all pages in an address space, marking an address space as unevictable is sufficient to solve this issue. [1]: https://patchwork.kernel.org/patch/9768741/ Kuo-Hsin Yang (2): shmem: export shmem_unlock_mapping drm/i915: Mark pinned shmemfs pages as unevictable Documentation/vm/unevictable-lru.rst | 4 +++- drivers/gpu/drm/i915/i915_gem.c | 8 ++++++++ mm/shmem.c | 2 ++ 3 files changed, 13 insertions(+), 1 deletion(-) -- 2.19.1.331.ge82ca0e54c-goog
