void __flush_dcache_page(struct page *page)
{
struct address_space *mapping = page_mapping(page);
unsigned long addr;
if (mapping && !mapping_mapped(mapping)) {
SetPageDcacheDirty(page);
return;
}
/*
* We could delay the flush for the !page_mapping case too. But that
* case is for exec env/arg pages and those are %99 certainly going to
* get faulted into the tlb (and thus flushed) anyways.
*/
if (PageHighMem(page))
addr = (unsigned long)__kmap_atomic(page);
else
addr = (unsigned long)page_address(page);
flush_data_cache_page(addr);
if (PageHighMem(page))
__kunmap_atomic((void *)addr);
}
void __flush_dcache_page(struct page *page)
{
#ifdef CONFIG_RALINK_SOC
void *addr;
if (page_mapping(page) && !page_mapped(page)) {
SetPageDcacheDirty(page);
return;
}
#else
struct address_space *mapping = page_mapping(page);
unsigned long addr;
if (PageHighMem(page))
return;
if (mapping && !mapping_mapped(mapping)) {
SetPageDcacheDirty(page);
return;
}
#endif
/*
* We could delay the flush for the !page_mapping case too. But that
* case is for exec env/arg pages and those are %99 certainly going to
* get faulted into the tlb (and thus flushed) anyways.
*/
#ifdef CONFIG_RALINK_SOC
if (PageHighMem(page)) {
addr = kmap_atomic(page, KM_PTE1);
flush_data_cache_page((unsigned long)addr);
kunmap_atomic(addr, KM_PTE1);
} else {
addr = (void *) page_address(page);
flush_data_cache_page((unsigned long)addr);
}
ClearPageDcacheDirty(page);
#else
addr = (unsigned long) page_address(page);
flush_data_cache_page(addr);
#endif
}
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;
}
addr = (unsigned long) page_address(page);
flush_data_cache_page(addr);
}
void flush_dcache_page(struct page *page)
{
unsigned long addr;
if (!cpu_has_dc_aliases)
return;
if (page->mapping && page->mapping->i_mmap == NULL &&
page->mapping->i_mmap_shared == NULL) {
SetPageDcacheDirty(page);
return;
}
/*
* We could delay the flush for the !page->mapping case too. But that
* case is for exec env/arg pages and those are 99% certainly going to
* get faulted into the tlb (and thus flushed) anyways.
*/
addr = (unsigned long) page_address(page);
flush_data_cache_page(addr);
}
void __flush_dcache_page(struct page *page)
{
void *addr;
if (page_mapping(page) && !page_mapped(page)) {
SetPageDcacheDirty(page);
return;
}
/*
* We could delay the flush for the !page_mapping case too. But that
* case is for exec env/arg pages and those are %99 certainly going to
* get faulted into the tlb (and thus flushed) anyways.
*/
if (PageHighMem(page)) {
addr = kmap_atomic(page);
flush_data_cache_page((unsigned long)addr);
kunmap_atomic(addr);
} else {
addr = (void *) page_address(page);
flush_data_cache_page((unsigned long)addr);
}
ClearPageDcacheDirty(page);
}
