[patch 041/114] vmalloc: call flush_cache_vunmap() from unmap_kernel_range()

[Greg KH]

2.6.28-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Tejun Heo <tj@xxxxxxxxxx>

commit f6fcba7014f9cc535fa75ef98c008b24e49e2212 upstream.

Impact: proper vcache flush on unmap_kernel_range()

flush_cache_vunmap() should be called before pages are unmapped.  Add
a call to it in unmap_kernel_range().

Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Acked-by: Nick Piggin <npiggin@xxxxxxx>
Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 mm/vmalloc.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -997,6 +997,8 @@ void __init vmalloc_init(void)
 void unmap_kernel_range(unsigned long addr, unsigned long size)
 {
 	unsigned long end = addr + size;
+
+	flush_cache_vunmap(addr, end);
 	vunmap_page_range(addr, end);
 	flush_tlb_kernel_range(addr, end);
 }


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