[PATCH] mm: remove VM_LOCKED before remap_pfn_range and drop VM_SHM

Remove VM_LOCKED before remap_pfn range from device drivers and get rid of
VM_SHM.

remap_pfn_range() already sets VM_IO.  There is no need to set VM_SHM since
it does nothing.  VM_LOCKED is of no use since the remap_pfn_range does not
place pages on the LRU.  The pages are therefore never subject to swap
anyways.  Remove all the vm_flags settings before calling remap_pfn_range.

After removing all the vm_flag settings no use of VM_SHM is left.  Drop it.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 0 insertions, 2 deletions

diff --git a/arch/i386/pci/i386.c b/arch/i386/pci/i386.c
index 7852827a599b..a151f7a99f5e 100644
--- a/arch/i386/pci/i386.c
+++ b/arch/i386/pci/i386.c
@@ -285,8 +285,6 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
         /* Leave vm_pgoff as-is, the PCI space address is the physical
          * address on this platform.
          */
-        vma->vm_flags |= (VM_SHM | VM_LOCKED | VM_IO);
-
         prot = pgprot_val(vma->vm_page_prot);
         if (boot_cpu_data.x86 > 3)
                 prot |= _PAGE_PCD | _PAGE_PWT;