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

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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 <[email protected]>
Acked-by: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Christoph Lameter 2006-06-25 05:46:47 -07:00 • committed by Linus Torvalds
commit 68402ddc67
14 changed files with 1 additions and 32 deletions
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3
drivers/video/igafb.c
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@ -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;