From: Tejun Heo <tj@kernel.org>
Date: Fri, 20 Feb 2009 23:38:48 +0000 (-0800)
Subject: vmalloc: call flush_cache_vunmap() from unmap_kernel_range()
X-Git-Tag: v2.6.28.8~73
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dbd17b6e5d8e8141ceab5d96b97120fdc00bf1b6;p=thirdparty%2Fkernel%2Fstable.git

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 d0b95b2aaa1cb..4172ce4f88975 100644
--- 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);
 }