diff options
| author | Christoph Lameter <clameter@sgi.com> | 2006-06-25 14:46:47 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-25 19:00:55 +0200 |
| commit | 68402ddc677005ed1b1359bbc1f279548cfc0928 (patch) | |
| tree | 83da62a2b55e2ea7e0c46ed79c0d6498d36e1942 /arch/xtensa/kernel/pci.c | |
| parent | [PATCH] AOP_TRUNCATED_PAGE victims in read_pages() belong in the LRU (diff) | |
| download | linux-68402ddc677005ed1b1359bbc1f279548cfc0928.tar.xz linux-68402ddc677005ed1b1359bbc1f279548cfc0928.zip | |
[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>
Diffstat (limited to 'arch/xtensa/kernel/pci.c')
| -rw-r--r-- | arch/xtensa/kernel/pci.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c index de19501aa809..c6f471b9eaa0 100644 --- a/arch/xtensa/kernel/pci.c +++ b/arch/xtensa/kernel/pci.c @@ -350,17 +350,6 @@ __pci_mmap_make_offset(struct pci_dev *dev, struct vm_area_struct *vma, } /* - * Set vm_flags of VMA, as appropriate for this architecture, for a pci device - * mapping. - */ -static __inline__ void -__pci_mmap_set_flags(struct pci_dev *dev, struct vm_area_struct *vma, - enum pci_mmap_state mmap_state) -{ - vma->vm_flags |= VM_SHM | VM_LOCKED | VM_IO; -} - -/* * Set vm_page_prot of VMA, as appropriate for this architecture, for a pci * device mapping. */ @@ -399,7 +388,6 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, if (ret < 0) return ret; - __pci_mmap_set_flags(dev, vma, mmap_state); __pci_mmap_set_pgprot(dev, vma, mmap_state, write_combine); ret = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, |