diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2011-06-17 19:20:28 +0400 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2011-10-20 18:00:18 +0400 |
| commit | d9cdc901af0f92da7f90c750d8c187f5500be067 (patch) | |
| tree | 1b5e11202d86081253ab1422e302b45902a346a3 /arch/mips/include/asm | |
| parent | 2e5db86dd4166fd88a042bbb229dfc7081df3e92 (diff) | |
| download | linux-d9cdc901af0f92da7f90c750d8c187f5500be067.tar.xz | |
MIPS: cache: Provide cache flush operations for XFS
Until now flush_kernel_vmap_range() and invalidate_kernel_vmap_range() did
not exist on MIPS resulting in heavy cache corruption on XFS filesystems.
Left for the post-3.0 time: optimization and make this work with highmem,
too. Since the combination of highmem + cache aliases atm doesn't work
this isn't a regression.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/2505/
Diffstat (limited to 'arch/mips/include/asm')
| -rw-r--r-- | arch/mips/include/asm/cacheflush.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/mips/include/asm/cacheflush.h b/arch/mips/include/asm/cacheflush.h index 40bb9fde205f..69468ded2828 100644 --- a/arch/mips/include/asm/cacheflush.h +++ b/arch/mips/include/asm/cacheflush.h @@ -114,4 +114,28 @@ unsigned long run_uncached(void *func); extern void *kmap_coherent(struct page *page, unsigned long addr); extern void kunmap_coherent(void); +#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE +static inline void flush_kernel_dcache_page(struct page *page) +{ + BUG_ON(cpu_has_dc_aliases && PageHighMem(page)); +} + +/* + * For now flush_kernel_vmap_range and invalidate_kernel_vmap_range both do a + * cache writeback and invalidate operation. + */ +extern void (*__flush_kernel_vmap_range)(unsigned long vaddr, int size); + +static inline void flush_kernel_vmap_range(void *vaddr, int size) +{ + if (cpu_has_dc_aliases) + __flush_kernel_vmap_range((unsigned long) vaddr, size); +} + +static inline void invalidate_kernel_vmap_range(void *vaddr, int size) +{ + if (cpu_has_dc_aliases) + __flush_kernel_vmap_range((unsigned long) vaddr, size); +} + #endif /* _ASM_CACHEFLUSH_H */ |