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| author | Jens Axboe <jens.axboe@oracle.com> | 2009-05-22 20:25:34 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-05-22 20:25:34 +0200 |
| commit | e4b636366c00738b9609cda307014d71b1225b7f (patch) | |
| tree | 760b67b3624eda62e943e48ce93635c30a5b47bf /arch/mips/mm/highmem.c | |
| parent | b9ed7252d219c1c663944bf03846eabb515dbe75 (diff) | |
| parent | 279e677faa775ad16e75c32e1bf4a37f8158bc61 (diff) | |
Merge branch 'master' into for-2.6.31
Conflicts:
drivers/block/hd.c
drivers/block/mg_disk.c
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'arch/mips/mm/highmem.c')
| -rw-r--r-- | arch/mips/mm/highmem.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/arch/mips/mm/highmem.c b/arch/mips/mm/highmem.c index 4481656d106..2b1309b2580 100644 --- a/arch/mips/mm/highmem.c +++ b/arch/mips/mm/highmem.c @@ -1,7 +1,12 @@ #include <linux/module.h> #include <linux/highmem.h> +#include <asm/fixmap.h> #include <asm/tlbflush.h> +static pte_t *kmap_pte; + +unsigned long highstart_pfn, highend_pfn; + void *__kmap(struct page *page) { void *addr; @@ -14,6 +19,7 @@ void *__kmap(struct page *page) return addr; } +EXPORT_SYMBOL(__kmap); void __kunmap(struct page *page) { @@ -22,6 +28,7 @@ void __kunmap(struct page *page) return; kunmap_high(page); } +EXPORT_SYMBOL(__kunmap); /* * kmap_atomic/kunmap_atomic is significantly faster than kmap/kunmap because @@ -48,11 +55,12 @@ void *__kmap_atomic(struct page *page, enum km_type type) #ifdef CONFIG_DEBUG_HIGHMEM BUG_ON(!pte_none(*(kmap_pte - idx))); #endif - set_pte(kmap_pte-idx, mk_pte(page, kmap_prot)); + set_pte(kmap_pte-idx, mk_pte(page, PAGE_KERNEL)); local_flush_tlb_one((unsigned long)vaddr); return (void*) vaddr; } +EXPORT_SYMBOL(__kmap_atomic); void __kunmap_atomic(void *kvaddr, enum km_type type) { @@ -77,6 +85,7 @@ void __kunmap_atomic(void *kvaddr, enum km_type type) pagefault_enable(); } +EXPORT_SYMBOL(__kunmap_atomic); /* * This is the same as kmap_atomic() but can map memory that doesn't @@ -92,7 +101,7 @@ void *kmap_atomic_pfn(unsigned long pfn, enum km_type type) debug_kmap_atomic(type); idx = type + KM_TYPE_NR*smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); - set_pte(kmap_pte-idx, pfn_pte(pfn, kmap_prot)); + set_pte(kmap_pte-idx, pfn_pte(pfn, PAGE_KERNEL)); flush_tlb_one(vaddr); return (void*) vaddr; @@ -111,7 +120,11 @@ struct page *__kmap_atomic_to_page(void *ptr) return pte_page(*pte); } -EXPORT_SYMBOL(__kmap); -EXPORT_SYMBOL(__kunmap); -EXPORT_SYMBOL(__kmap_atomic); -EXPORT_SYMBOL(__kunmap_atomic); +void __init kmap_init(void) +{ + unsigned long kmap_vstart; + + /* cache the first kmap pte */ + kmap_vstart = __fix_to_virt(FIX_KMAP_BEGIN); + kmap_pte = kmap_get_fixmap_pte(kmap_vstart); +} |