diff options
Diffstat (limited to 'arch/nds32/mm/cacheflush.c')
| -rw-r--r-- | arch/nds32/mm/cacheflush.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/arch/nds32/mm/cacheflush.c b/arch/nds32/mm/cacheflush.c index ee44ad96b6ed..02f25ee39c1d 100644 --- a/arch/nds32/mm/cacheflush.c +++ b/arch/nds32/mm/cacheflush.c @@ -217,17 +217,20 @@ void flush_dcache_page(struct page *page) if (mapping && !mapping_mapped(mapping)) set_bit(PG_dcache_dirty, &page->flags); else { - int i, pc; - unsigned long vto, kaddr, flags; + unsigned long kaddr, flags; + kaddr = (unsigned long)page_address(page); - cpu_dcache_wbinval_page(kaddr); - pc = CACHE_SET(DCACHE) * CACHE_LINE_SIZE(DCACHE) / PAGE_SIZE; local_irq_save(flags); - for (i = 0; i < pc; i++) { - vto = - kremap0(kaddr + i * PAGE_SIZE, page_to_phys(page)); - cpu_dcache_wbinval_page(vto); - kunmap01(vto); + cpu_dcache_wbinval_page(kaddr); + if (mapping) { + unsigned long vaddr, kto; + + vaddr = page->index << PAGE_SHIFT; + if (aliasing(vaddr, kaddr)) { + kto = kremap0(vaddr, page_to_phys(page)); + cpu_dcache_wbinval_page(kto); + kunmap01(kto); + } } local_irq_restore(flags); } |