[IA64] Untangle sync_icache_dcache() page size determination

Untangle the chaos of page size determination in this function by
simply using PAGE_SIZE << compound_order().

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 1 insertions, 7 deletions

diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index a4ca657c72c6..da05893294b5 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -58,7 +58,6 @@ __ia64_sync_icache_dcache (pte_t pte)
 {
         unsigned long addr;
         struct page *page;
-        unsigned long order;
 
         page = pte_page(pte);
         addr = (unsigned long) page_address(page);
@@ -66,12 +65,7 @@ __ia64_sync_icache_dcache (pte_t pte)
         if (test_bit(PG_arch_1, &page->flags))
                 return;                         /* i-cache is already coherent with d-cache */
 
-        if (PageCompound(page)) {
-                order = compound_order(page);
-                flush_icache_range(addr, addr + (1UL << order << PAGE_SHIFT));
-        }
-        else
-                flush_icache_range(addr, addr + PAGE_SIZE);
+        flush_icache_range(addr, addr + (PAGE_SIZE << compound_order(page)));
         set_bit(PG_arch_1, &page->flags);       /* mark page as clean */
 }