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| author | Christoph Lameter <clameter@sgi.com> | 2006-06-25 05:46:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-25 10:00:55 -0700 |
| commit | 68402ddc677005ed1b1359bbc1f279548cfc0928 (patch) | |
| tree | 83da62a2b55e2ea7e0c46ed79c0d6498d36e1942 /drivers | |
| parent | 9f1a3cfcffaed2fbb3206179295c79ca8289f5c3 (diff) | |
| download | linux-3.10-68402ddc677005ed1b1359bbc1f279548cfc0928.tar.gz linux-3.10-68402ddc677005ed1b1359bbc1f279548cfc0928.tar.bz2 linux-3.10-68402ddc677005ed1b1359bbc1f279548cfc0928.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 'drivers')
| -rw-r--r-- | drivers/char/mmtimer.c | 1 | ||||
| -rw-r--r-- | drivers/sbus/char/flash.c | 1 | ||||
| -rw-r--r-- | drivers/sbus/char/vfc_dev.c | 2 | ||||
| -rw-r--r-- | drivers/video/igafb.c | 3 |
4 files changed, 1 insertions, 6 deletions
diff --git a/drivers/char/mmtimer.c b/drivers/char/mmtimer.c index 1b05fa68899..d65b3109318 100644 --- a/drivers/char/mmtimer.c +++ b/drivers/char/mmtimer.c @@ -329,7 +329,6 @@ static int mmtimer_mmap(struct file *file, struct vm_area_struct *vma) if (PAGE_SIZE > (1 << 16)) return -ENOSYS; - vma->vm_flags |= (VM_IO | VM_SHM | VM_LOCKED ); vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); mmtimer_addr = __pa(RTC_COUNTER_ADDR); diff --git a/drivers/sbus/char/flash.c b/drivers/sbus/char/flash.c index 5ae684c011f..31b8a5f6116 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 dfdd6be551f..ddcd330b9e8 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, diff --git a/drivers/video/igafb.c b/drivers/video/igafb.c index 6b88050d21b..8a0c2d3d380 100644 --- a/drivers/video/igafb.c +++ b/drivers/video/igafb.c @@ -232,9 +232,6 @@ static int igafb_mmap(struct fb_info *info, size = vma->vm_end - vma->vm_start; - /* To stop the swapper from even considering these pages. */ - vma->vm_flags |= (VM_SHM | VM_LOCKED); - /* Each page, see which map applies */ for (page = 0; page < size; ) { map_size = 0; |