Linux 4.20-rc7

* tag 'v4.20-rc7': (403 commits)
  Linux 4.20-rc7
  scripts/spdxcheck.py: always open files in binary mode
  checkstack.pl: fix for aarch64
  userfaultfd: check VM_MAYWRITE was set after verifying the uffd is registered
  fs/iomap.c: get/put the page in iomap_page_create/release()
  hugetlbfs: call VM_BUG_ON_PAGE earlier in free_huge_page()
  memblock: annotate memblock_is_reserved() with __init_memblock
  psi: fix reference to kernel commandline enable
  arch/sh/include/asm/io.h: provide prototypes for PCI I/O mapping in asm/io.h
  mm/sparse: add common helper to mark all memblocks present
  mm: introduce common STRUCT_PAGE_MAX_SHIFT define
  alpha: fix hang caused by the bootmem removal
  XArray: Fix xa_alloc when id exceeds max
  drm/vmwgfx: Protect from excessive execbuf kernel memory allocations v3
  MAINTAINERS: Daniel for drm co-maintainer
  drm/amdgpu: drop fclk/gfxclk ratio setting
  IB/core: Fix oops in netdev_next_upper_dev_rcu()
  dm thin: bump target version
  drm/vmwgfx: remove redundant return ret statement
  drm/i915: Flush GPU relocs harder for gen3
  ...