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author | Franck Bui-Huu <fbuihuu@gmail.com> | 2006-10-12 21:06:33 +0200 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-13 08:35:38 -0700 |
commit | 99a10a60ba9bedcf5d70ef81414d3e03816afa3f (patch) | |
tree | 7ea2c86ddd2bfdab885fe86f1c60d412e5730bb1 /include/asm-sparc64/fcntl.h | |
parent | a5344a9555fffd045218aced89afd6ca0f884e10 (diff) |
[PATCH] Fix up mmap_kmem
vma->vm_pgoff is an pfn _offset_ relatif to the begining
of the memory start. The previous code was doing at first:
vma->vm_pgoff << PAGE_SHIFT
which results into a wrong physical address since some
platforms have a physical mem start that can be different
from 0. After that the previous call __pa() on this
wrong physical address, however __pa() is used to convert
a _virtual_ address into a physical one.
This patch rewrites this convertion. It calculates the
pfn of PAGE_OFFSET which is the pfn of the mem start
then it adds the vma->vm_pgoff to it.
It also uses virt_to_phys() instead of __pa() since the
latter shouldn't be used by drivers.
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-sparc64/fcntl.h')
0 files changed, 0 insertions, 0 deletions