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authorJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-01-31 11:24:00 -0600
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-01-31 11:24:00 -0600
commit30716e07ef511ec7525c07eb1e8060ba8943c2a2 (patch)
treeeb6a47cae63d3587fa773cc5a16781eaa2c7810b /drivers/char/mem.c
parent03c79cc56e4497cbd09d74a73c1bd0d1d9a8a16c (diff)
parentf56df2f4db6e4af87fb8e941cff69f4501a111df (diff)
downloadlinux-30716e07ef511ec7525c07eb1e8060ba8943c2a2.tar.gz
linux-30716e07ef511ec7525c07eb1e8060ba8943c2a2.tar.xz
Merge branch 'linus'
Diffstat (limited to 'drivers/char/mem.c')
-rw-r--r--drivers/char/mem.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 4f1813e04754..f5c160caf9f4 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -293,8 +293,8 @@ static int mmap_kmem(struct file * file, struct vm_area_struct * vma)
{
unsigned long pfn;
- /* Turn a pfn offset into an absolute pfn */
- pfn = PFN_DOWN(virt_to_phys((void *)PAGE_OFFSET)) + vma->vm_pgoff;
+ /* Turn a kernel-virtual address into a physical page frame */
+ pfn = __pa((u64)vma->vm_pgoff << PAGE_SHIFT) >> PAGE_SHIFT;
/*
* RED-PEN: on some architectures there is more mapped memory