diff options
Diffstat (limited to 'arch/mips/mm/cache.c')
| -rw-r--r-- | arch/mips/mm/cache.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c index ddd3a2de1d73..40c8b0235183 100644 --- a/arch/mips/mm/cache.c +++ b/arch/mips/mm/cache.c @@ -25,7 +25,7 @@ void (*flush_cache_range)(struct vm_area_struct *vma, unsigned long start, void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn); void (*flush_icache_range)(unsigned long start, unsigned long end); -void (*flush_icache_page)(struct vm_area_struct *vma, struct page *page); +void (*__flush_icache_page)(struct vm_area_struct *vma, struct page *page); /* MIPS specific cache operations */ void (*flush_cache_sigtramp)(unsigned long addr); @@ -70,6 +70,8 @@ void __flush_dcache_page(struct page *page) struct address_space *mapping = page_mapping(page); unsigned long addr; + if (PageHighMem(page)) + return; if (mapping && !mapping_mapped(mapping)) { SetPageDcacheDirty(page); return; @@ -91,16 +93,16 @@ void __update_cache(struct vm_area_struct *vma, unsigned long address, { struct page *page; unsigned long pfn, addr; + int exec = (vma->vm_flags & VM_EXEC) && !cpu_has_ic_fills_f_dc; pfn = pte_pfn(pte); - if (pfn_valid(pfn) && (page = pfn_to_page(pfn), page_mapping(page)) && - Page_dcache_dirty(page)) { - if (pages_do_alias((unsigned long)page_address(page), - address & PAGE_MASK)) { - addr = (unsigned long) page_address(page); + if (unlikely(!pfn_valid(pfn))) + return; + page = pfn_to_page(pfn); + if (page_mapping(page) && Page_dcache_dirty(page)) { + addr = (unsigned long) page_address(page); + if (exec || pages_do_alias(addr, address & PAGE_MASK)) flush_data_cache_page(addr); - } - ClearPageDcacheDirty(page); } } |