From 68402ddc677005ed1b1359bbc1f279548cfc0928 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Sun, 25 Jun 2006 05:46:47 -0700 Subject: [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 Acked-by: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/sbus/char/flash.c | 1 - drivers/sbus/char/vfc_dev.c | 2 +- 2 files changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/sbus') diff --git a/drivers/sbus/char/flash.c b/drivers/sbus/char/flash.c index 5ae684c011f8..31b8a5f6116f 100644 --- a/drivers/sbus/char/flash.c +++ b/drivers/sbus/char/flash.c @@ -71,7 +71,6 @@ flash_mmap(struct file *file, struct vm_area_struct *vma) if (vma->vm_end - (vma->vm_start + (vma->vm_pgoff << PAGE_SHIFT)) > size) size = vma->vm_end - (vma->vm_start + (vma->vm_pgoff << PAGE_SHIFT)); - vma->vm_flags |= (VM_SHM | VM_LOCKED); vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); if (io_remap_pfn_range(vma, vma->vm_start, addr, size, vma->vm_page_prot)) diff --git a/drivers/sbus/char/vfc_dev.c b/drivers/sbus/char/vfc_dev.c index dfdd6be551f3..ddcd330b9e89 100644 --- a/drivers/sbus/char/vfc_dev.c +++ b/drivers/sbus/char/vfc_dev.c @@ -623,7 +623,7 @@ static int vfc_mmap(struct file *file, struct vm_area_struct *vma) map_size = sizeof(struct vfc_regs); vma->vm_flags |= - (VM_SHM | VM_LOCKED | VM_IO | VM_MAYREAD | VM_MAYWRITE | VM_MAYSHARE); + (VM_MAYREAD | VM_MAYWRITE | VM_MAYSHARE); map_offset = (unsigned int) (long)dev->phys_regs; ret = io_remap_pfn_range(vma, vma->vm_start, MK_IOSPACE_PFN(dev->which_io, -- cgit v1.2.3