diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2009-08-04 16:02:43 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-08-04 16:02:43 +0900 |
| commit | c0fe478dbb14fd32e71d1383dbe302b54ce94134 (patch) | |
| tree | 65bf8762df2a02d01a7f1326c67c078a98c51c39 /arch/sh/include/asm/cacheflush.h | |
| parent | b5eb10ae901fa797c19accb684825f0e36ecbe0f (diff) | |
sh: Provide __flush_anon_page().
This provides a __flush_anon_page() that handles both the aliasing and
non-aliasing cases. This fixes up some crashes with heavy
get_user_pages() users.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include/asm/cacheflush.h')
| -rw-r--r-- | arch/sh/include/asm/cacheflush.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h index 4c85d55847c..5dffbd126e4 100644 --- a/arch/sh/include/asm/cacheflush.h +++ b/arch/sh/include/asm/cacheflush.h @@ -1,6 +1,8 @@ #ifndef __ASM_SH_CACHEFLUSH_H #define __ASM_SH_CACHEFLUSH_H +#include <linux/mm.h> + #ifdef __KERNEL__ #ifdef CONFIG_CACHE_OFF @@ -43,6 +45,18 @@ extern void __flush_purge_region(void *start, int size); extern void __flush_invalidate_region(void *start, int size); #endif +#ifdef CONFIG_MMU +#define ARCH_HAS_FLUSH_ANON_PAGE +extern void __flush_anon_page(struct page *page, unsigned long); + +static inline void flush_anon_page(struct vm_area_struct *vma, + struct page *page, unsigned long vmaddr) +{ + if (boot_cpu_data.dcache.n_aliases && PageAnon(page)) + __flush_anon_page(page, vmaddr); +} +#endif + #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE static inline void flush_kernel_dcache_page(struct page *page) { |