VM, x86, PAT: add a new vm flag to track full pfnmap at mmap
Impact: cleanup
Add a new vm flag VM_PFN_AT_MMAP to identify a PFNMAP that is
fully mapped with remap_pfn_range. Patch removes the overloading
of VM_INSERTPAGE from the earlier patch.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Nick Piggin <npiggin@suse.de>
LKML-Reference: <20090313233543.GA19909@linux-os.sc.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/mm/memory.c b/mm/memory.c
index d7df5ba..2032ad2 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1667,7 +1667,7 @@
*/
if (addr == vma->vm_start && end == vma->vm_end) {
vma->vm_pgoff = pfn;
- vma->vm_flags |= VM_PFNMAP_AT_MMAP;
+ vma->vm_flags |= VM_PFN_AT_MMAP;
} else if (is_cow_mapping(vma->vm_flags))
return -EINVAL;
@@ -1680,7 +1680,7 @@
* needed from higher level routine calling unmap_vmas
*/
vma->vm_flags &= ~(VM_IO | VM_RESERVED | VM_PFNMAP);
- vma->vm_flags &= ~VM_PFNMAP_AT_MMAP;
+ vma->vm_flags &= ~VM_PFN_AT_MMAP;
return -EINVAL;
}