[IA64] lazy_mmu_prot_update needs to be aware of huge pages
Function lazy_mmu_prot_update is also used on huge pages when it is called
by set_huge_ptep_writable, but it isn't aware of huge pages.
Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Acked-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index ff4f31f..6747361 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -109,6 +109,7 @@
{
unsigned long addr;
struct page *page;
+ unsigned long order;
if (!pte_exec(pte))
return; /* not an executable page... */
@@ -119,7 +120,12 @@
if (test_bit(PG_arch_1, &page->flags))
return; /* i-cache is already coherent with d-cache */
- flush_icache_range(addr, addr + PAGE_SIZE);
+ if (PageCompound(page)) {
+ order = (unsigned long) (page[1].lru.prev);
+ flush_icache_range(addr, addr + (1UL << order << PAGE_SHIFT));
+ }
+ else
+ flush_icache_range(addr, addr + PAGE_SIZE);
set_bit(PG_arch_1, &page->flags); /* mark page as clean */
}