vmalloc: call flush_cache_vunmap() from unmap_kernel_range()

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@kernel.org>
Acked-by: Nick Piggin <npiggin@suse.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index d0b95b2aaa1cb244bcbacacf91d20bb287289ea3..4172ce4f8897525593a894e0af5cecfc3d396888 100644 (file)
--- 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);
 }