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um: drop _PAGE_FILE and pte_file()-related helpers
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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: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Kirill A. Shutemov authored and Linus Torvalds committed Feb 10, 2015
1 parent eb12f48 commit 3513006
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Showing 3 changed files with 0 additions and 38 deletions.
9 changes: 0 additions & 9 deletions arch/um/include/asm/pgtable-2level.h
Original file line number Diff line number Diff line change
Expand Up @@ -41,13 +41,4 @@ static inline void pgd_mkuptodate(pgd_t pgd) { }
#define pfn_pte(pfn, prot) __pte(pfn_to_phys(pfn) | pgprot_val(prot))
#define pfn_pmd(pfn, prot) __pmd(pfn_to_phys(pfn) | pgprot_val(prot))

/*
* Bits 0 through 4 are taken
*/
#define PTE_FILE_MAX_BITS 27

#define pte_to_pgoff(pte) (pte_val(pte) >> 5)

#define pgoff_to_pte(off) ((pte_t) { ((off) << 5) + _PAGE_FILE })

#endif
20 changes: 0 additions & 20 deletions arch/um/include/asm/pgtable-3level.h
Original file line number Diff line number Diff line change
Expand Up @@ -112,25 +112,5 @@ static inline pmd_t pfn_pmd(pfn_t page_nr, pgprot_t pgprot)
return __pmd((page_nr << PAGE_SHIFT) | pgprot_val(pgprot));
}

/*
* Bits 0 through 3 are taken in the low part of the pte,
* put the 32 bits of offset into the high part.
*/
#define PTE_FILE_MAX_BITS 32

#ifdef CONFIG_64BIT

#define pte_to_pgoff(p) ((p).pte >> 32)

#define pgoff_to_pte(off) ((pte_t) { ((off) << 32) | _PAGE_FILE })

#else

#define pte_to_pgoff(pte) ((pte).pte_high)

#define pgoff_to_pte(off) ((pte_t) { _PAGE_FILE, (off) })

#endif

#endif

9 changes: 0 additions & 9 deletions arch/um/include/asm/pgtable.h
Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,6 @@
#define _PAGE_ACCESSED 0x080
#define _PAGE_DIRTY 0x100
/* If _PAGE_PRESENT is clear, we use these: */
#define _PAGE_FILE 0x008 /* nonlinear file mapping, saved PTE; unset:swap */
#define _PAGE_PROTNONE 0x010 /* if the user mapped it with PROT_NONE;
pte_present gives true */

Expand Down Expand Up @@ -151,14 +150,6 @@ static inline int pte_write(pte_t pte)
!(pte_get_bits(pte, _PAGE_PROTNONE)));
}

/*
* The following only works if pte_present() is not true.
*/
static inline int pte_file(pte_t pte)
{
return pte_get_bits(pte, _PAGE_FILE);
}

static inline int pte_dirty(pte_t pte)
{
return pte_get_bits(pte, _PAGE_DIRTY);
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