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authorAkinobu Mita <akinobu.mita@gmail.com>2009-03-11 17:33:18 +0300
committerIngo Molnar <mingo@elte.hu>2009-03-11 17:47:46 +0300
commitbb6d59ca927d855ffac567b35c0a790c67016103 (patch)
treecbfa2c1b8fd85c1ed93d077625a2e15b5b8a8ea9 /arch/x86/mm/highmem_32.c
parent78b020d035074fc3aa4d017353bb2c32e2aff56f (diff)
downloadlinux-bb6d59ca927d855ffac567b35c0a790c67016103.tar.xz
x86: unify kmap_atomic_pfn() and iomap_atomic_prot_pfn()
kmap_atomic_pfn() and iomap_atomic_prot_pfn() are almost same except pgprot. This patch removes the code duplication for these two functions. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> LKML-Reference: <20090311143317.GA22244@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/highmem_32.c')
-rw-r--r--arch/x86/mm/highmem_32.c17
1 files changed, 11 insertions, 6 deletions
diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c
index d11745334a67..ae4c8dae2669 100644
--- a/arch/x86/mm/highmem_32.c
+++ b/arch/x86/mm/highmem_32.c
@@ -121,23 +121,28 @@ void kunmap_atomic(void *kvaddr, enum km_type type)
pagefault_enable();
}
-/* This is the same as kmap_atomic() but can map memory that doesn't
- * have a struct page associated with it.
- */
-void *kmap_atomic_pfn(unsigned long pfn, enum km_type type)
+void *kmap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot)
{
enum fixed_addresses idx;
unsigned long vaddr;
pagefault_disable();
- idx = type + KM_TYPE_NR*smp_processor_id();
+ 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, prot));
arch_flush_lazy_mmu_mode();
return (void*) vaddr;
}
+
+/* This is the same as kmap_atomic() but can map memory that doesn't
+ * have a struct page associated with it.
+ */
+void *kmap_atomic_pfn(unsigned long pfn, enum km_type type)
+{
+ return kmap_atomic_prot_pfn(pfn, type, kmap_prot);
+}
EXPORT_SYMBOL_GPL(kmap_atomic_pfn); /* temporarily in use by i915 GEM until vmap */
struct page *kmap_atomic_to_page(void *ptr)