[ARM] Optimise __flush_dcache_page calls.

diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c
index a0876353d651cbd33867c946eb2c511954f8b0dd..58240786cfaf953412e7c444101a06d39c226cf8 100644 (file)
--- a/arch/arm/mm/flush.c
+++ b/arch/arm/mm/flush.c
@@ -13,13 +13,11 @@
 
 #include <asm/cacheflush.h>
 
-static void __flush_dcache_page(struct page *page)
+static void __flush_dcache_page(struct address_space *mapping, struct page *page)
 {
-       struct address_space *mapping = page_mapping(page);
        struct mm_struct *mm = current->active_mm;
        struct vm_area_struct *mpnt;
        struct prio_tree_iter iter;
-       unsigned long offset;
        pgoff_t pgoff;
 
        __cpuc_flush_dcache_page(page_address(page));
@@ -35,6 +33,8 @@ static void __flush_dcache_page(struct page *page)
 
        flush_dcache_mmap_lock(mapping);
        vma_prio_tree_foreach(mpnt, &iter, &mapping->i_mmap, pgoff, pgoff) {
+               unsigned long offset;
+
                /*
                 * If this VMA is not in our MM, we can ignore it.
                 */
@@ -55,6 +55,6 @@ void flush_dcache_page(struct page *page)
        if (mapping && !mapping_mapped(mapping))
                set_bit(PG_dcache_dirty, &page->flags);
        else
-               __flush_dcache_page(page);
+               __flush_dcache_page(mapping, page);
 }
 EXPORT_SYMBOL(flush_dcache_page);