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| author | David S. Miller <davem@davemloft.net> | 2010-04-21 01:14:25 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-21 01:14:25 -0700 |
| commit | 87eb367003887cdc81a5d183efea227b5b488961 (patch) | |
| tree | 40f617e25a9364d573e3cd2189c9e7fa56c8a0fe /arch/arm/mm/flush.c | |
| parent | ccb7c7732e2ceb4e81a7806faf1670be9681ccd2 (diff) | |
| parent | 05d17608a69b3ae653ea5c9857283bef3439c733 (diff) | |
| download | kernel_samsung_aries-87eb367003887cdc81a5d183efea227b5b488961.zip kernel_samsung_aries-87eb367003887cdc81a5d183efea227b5b488961.tar.gz kernel_samsung_aries-87eb367003887cdc81a5d183efea227b5b488961.tar.bz2 | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/wireless/iwlwifi/iwl-6000.c
net/core/dev.c
Diffstat (limited to 'arch/arm/mm/flush.c')
| -rw-r--r-- | arch/arm/mm/flush.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c index e34f095..c6844cb 100644 --- a/arch/arm/mm/flush.c +++ b/arch/arm/mm/flush.c @@ -13,6 +13,7 @@ #include <asm/cacheflush.h> #include <asm/cachetype.h> +#include <asm/highmem.h> #include <asm/smp_plat.h> #include <asm/system.h> #include <asm/tlbflush.h> @@ -152,21 +153,25 @@ void copy_to_user_page(struct vm_area_struct *vma, struct page *page, void __flush_dcache_page(struct address_space *mapping, struct page *page) { - void *addr = page_address(page); - /* * Writeback any data associated with the kernel mapping of this * page. This ensures that data in the physical page is mutually * coherent with the kernels mapping. */ -#ifdef CONFIG_HIGHMEM - /* - * kmap_atomic() doesn't set the page virtual address, and - * kunmap_atomic() takes care of cache flushing already. - */ - if (addr) -#endif - __cpuc_flush_dcache_area(addr, PAGE_SIZE); + if (!PageHighMem(page)) { + __cpuc_flush_dcache_area(page_address(page), PAGE_SIZE); + } else { + void *addr = kmap_high_get(page); + if (addr) { + __cpuc_flush_dcache_area(addr, PAGE_SIZE); + kunmap_high(page); + } else if (cache_is_vipt()) { + pte_t saved_pte; + addr = kmap_high_l1_vipt(page, &saved_pte); + __cpuc_flush_dcache_area(addr, PAGE_SIZE); + kunmap_high_l1_vipt(page, saved_pte); + } + } /* * If this is a page cache page, and we have an aliasing VIPT cache, |