3.16.59-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "Kirill A. Shutemov" kirill.shutemov@linux.intel.com
commit 6bf63a8ccb1dccd6ab81bc8bc46863493629cdb8 upstream.
We've replaced remap_file_pages(2) implementation with emulation. Nobody creates non-linear mapping anymore.
This patch also increases the number of bits availble for swap offset.
Signed-off-by: Kirill A. Shutemov kirill.shutemov@linux.intel.com Cc: David Howells dhowells@redhat.com Cc: Koichi Yasutake yasutake.koichi@jp.panasonic.com Cc: Hugh Dickins hughd@google.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Ben Hutchings ben@decadent.org.uk --- arch/mn10300/include/asm/pgtable.h | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-)
--- a/arch/mn10300/include/asm/pgtable.h +++ b/arch/mn10300/include/asm/pgtable.h @@ -134,7 +134,6 @@ extern pte_t kernel_vmalloc_ptes[(VMALLO #define _PAGE_NX 0 /* no-execute bit */
/* If _PAGE_VALID is clear, we use these: */ -#define _PAGE_FILE xPTEL2_C /* set:pagecache unset:swap */ #define _PAGE_PROTNONE 0x000 /* If not present */
#define __PAGE_PROT_UWAUX 0x010 @@ -241,11 +240,6 @@ static inline int pte_young(pte_t pte) { static inline int pte_write(pte_t pte) { return pte_val(pte) & __PAGE_PROT_WRITE; } static inline int pte_special(pte_t pte){ return 0; }
-/* - * The following only works if pte_present() is not true. - */ -static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; } - static inline pte_t pte_rdprotect(pte_t pte) { pte_val(pte) &= ~(__PAGE_PROT_USER|__PAGE_PROT_UWAUX); return pte; @@ -338,16 +332,11 @@ static inline int pte_exec_kernel(pte_t return 1; }
-#define PTE_FILE_MAX_BITS 30 - -#define pte_to_pgoff(pte) (pte_val(pte) >> 2) -#define pgoff_to_pte(off) __pte((off) << 2 | _PAGE_FILE) - /* Encode and de-code a swap entry */ -#define __swp_type(x) (((x).val >> 2) & 0x3f) -#define __swp_offset(x) ((x).val >> 8) +#define __swp_type(x) (((x).val >> 1) & 0x3f) +#define __swp_offset(x) ((x).val >> 7) #define __swp_entry(type, offset) \ - ((swp_entry_t) { ((type) << 2) | ((offset) << 8) }) + ((swp_entry_t) { ((type) << 1) | ((offset) << 7) }) #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) #define __swp_entry_to_pte(x) __pte((x).val)