diff options
| author |   Thomas Hellstrom <thellstrom@vmware.com> | 2019-11-22 09:25:12 +0100 |
|---|---|---|
| committer | Thomas Hellstrom <thellstrom@vmware.com> | 2020-01-16 10:32:33 +0100 |
| commit | 574c5b3d0e4c0803d3094fd27f83e161345ebe2f (patch) | |
| tree | 5b75b8932101bbe6886192d918709cc8ae219fdb /include/linux/mm_types.h | |
| parent | Merge tag 'drm-intel-next-2020-01-14' of git://anongit.freedesktop.org/drm/drm-intel into drm-next (diff) | |
| download | linux-dev-574c5b3d0e4c0803d3094fd27f83e161345ebe2f.tar.xz linux-dev-574c5b3d0e4c0803d3094fd27f83e161345ebe2f.zip | |
mm: Add a vmf_insert_mixed_prot() function
The TTM module today uses a hack to be able to set a different page
protection than struct vm_area_struct::vm_page_prot. To be able to do
this properly, add the needed vm functionality as vmf_insert_mixed_prot().
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: "Jérôme Glisse" <jglisse@redhat.com>
Cc: "Christian König" <christian.koenig@amd.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/mm_types.h')
| -rw-r--r-- | include/linux/mm_types.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 270aa8fd2800..e5f0080b4e15 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -312,7 +312,12 @@ struct vm_area_struct { /* Second cache line starts here. */ struct mm_struct *vm_mm; /* The address space we belong to. */ - pgprot_t vm_page_prot; /* Access permissions of this VMA. */ + + /* + * Access permissions of this VMA. + * See vmf_insert_mixed_prot() for discussion. + */ + pgprot_t vm_page_prot; unsigned long vm_flags; /* Flags, see mm.h. */ /* |