vmalloc.c: fix flushing in vmap_page_range()

The flush_cache_vmap in vmap_page_range() is called with the end of the
range twice.  The following patch fixes this for me.

Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 1ddb77ba3995c2d8f486baf32c1409b3daf8093f..7465f22fec0cb800187ce0a98e8a80d616ce9fc8 100644 (file)
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -151,11 +151,12 @@ static int vmap_pud_range(pgd_t *pgd, unsigned long addr,
  *
  * Ie. pte at addr+N*PAGE_SIZE shall point to pfn corresponding to pages[N]
  */
-static int vmap_page_range(unsigned long addr, unsigned long end,
+static int vmap_page_range(unsigned long start, unsigned long end,
                                pgprot_t prot, struct page **pages)
 {
        pgd_t *pgd;
        unsigned long next;
+       unsigned long addr = start;
        int err = 0;
        int nr = 0;
 
@@ -167,7 +168,7 @@ static int vmap_page_range(unsigned long addr, unsigned long end,
                if (err)
                        break;
        } while (pgd++, addr = next, addr != end);
-       flush_cache_vmap(addr, end);
+       flush_cache_vmap(start, end);
 
        if (unlikely(err))
                return err;