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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2015-02-11 01:11:22 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-11 01:30:33 +0300
commit0a191362058391878cc2a4d4ccddcd8223eb4f79 (patch)
treea61b46f17075ca630b4832d9bbf629911716c7a6 /arch/x86/include/asm/pgtable-2level.h
parent40171798fe11a6dc1d963058b097b2c4c9d34a9c (diff)
downloadlinux-0a191362058391878cc2a4d4ccddcd8223eb4f79.tar.xz
x86: drop _PAGE_FILE and pte_file()-related helpers
We've replaced remap_file_pages(2) implementation with emulation. Nobody creates non-linear mapping anymore. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/include/asm/pgtable-2level.h')
-rw-r--r--arch/x86/include/asm/pgtable-2level.h38
1 files changed, 1 insertions, 37 deletions
diff --git a/arch/x86/include/asm/pgtable-2level.h b/arch/x86/include/asm/pgtable-2level.h
index 206a87fdd22d..fd74a11959de 100644
--- a/arch/x86/include/asm/pgtable-2level.h
+++ b/arch/x86/include/asm/pgtable-2level.h
@@ -62,44 +62,8 @@ static inline unsigned long pte_bitop(unsigned long value, unsigned int rightshi
return ((value >> rightshift) & mask) << leftshift;
}
-/*
- * Bits _PAGE_BIT_PRESENT, _PAGE_BIT_FILE and _PAGE_BIT_PROTNONE are taken,
- * split up the 29 bits of offset into this range.
- */
-#define PTE_FILE_MAX_BITS 29
-#define PTE_FILE_SHIFT1 (_PAGE_BIT_PRESENT + 1)
-#define PTE_FILE_SHIFT2 (_PAGE_BIT_FILE + 1)
-#define PTE_FILE_SHIFT3 (_PAGE_BIT_PROTNONE + 1)
-#define PTE_FILE_BITS1 (PTE_FILE_SHIFT2 - PTE_FILE_SHIFT1 - 1)
-#define PTE_FILE_BITS2 (PTE_FILE_SHIFT3 - PTE_FILE_SHIFT2 - 1)
-
-#define PTE_FILE_MASK1 ((1U << PTE_FILE_BITS1) - 1)
-#define PTE_FILE_MASK2 ((1U << PTE_FILE_BITS2) - 1)
-
-#define PTE_FILE_LSHIFT2 (PTE_FILE_BITS1)
-#define PTE_FILE_LSHIFT3 (PTE_FILE_BITS1 + PTE_FILE_BITS2)
-
-static __always_inline pgoff_t pte_to_pgoff(pte_t pte)
-{
- return (pgoff_t)
- (pte_bitop(pte.pte_low, PTE_FILE_SHIFT1, PTE_FILE_MASK1, 0) +
- pte_bitop(pte.pte_low, PTE_FILE_SHIFT2, PTE_FILE_MASK2, PTE_FILE_LSHIFT2) +
- pte_bitop(pte.pte_low, PTE_FILE_SHIFT3, -1UL, PTE_FILE_LSHIFT3));
-}
-
-static __always_inline pte_t pgoff_to_pte(pgoff_t off)
-{
- return (pte_t){
- .pte_low =
- pte_bitop(off, 0, PTE_FILE_MASK1, PTE_FILE_SHIFT1) +
- pte_bitop(off, PTE_FILE_LSHIFT2, PTE_FILE_MASK2, PTE_FILE_SHIFT2) +
- pte_bitop(off, PTE_FILE_LSHIFT3, -1UL, PTE_FILE_SHIFT3) +
- _PAGE_FILE,
- };
-}
-
/* Encode and de-code a swap entry */
-#define SWP_TYPE_BITS (_PAGE_BIT_FILE - _PAGE_BIT_PRESENT - 1)
+#define SWP_TYPE_BITS 5
#define SWP_OFFSET_SHIFT (_PAGE_BIT_PROTNONE + 1)
#define MAX_SWAPFILES_CHECK() BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > SWP_TYPE_BITS)