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Message-ID: <lsq.1538257387.771351616@decadent.org.uk>
Date: Sat, 29 Sep 2018 22:43:07 +0100
From: Ben Hutchings <ben@...adent.org.uk>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC: akpm@...ux-foundation.org,
"Geert Uytterhoeven" <geert@...ux-m68k.org>,
"Kirill A. Shutemov" <kirill@...temov.name>,
"Linus Torvalds" <torvalds@...ux-foundation.org>,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [PATCH 3.16 074/131] m68k: drop _PAGE_FILE and pte_file()-related
helpers
3.16.59-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: "Kirill A. Shutemov" <kirill@...temov.name>
commit 1eeda0abf4425c91e7ce3ca32f1908c3a51bf84e upstream.
We've replaced remap_file_pages(2) implementation with emulation. Nobody
creates non-linear mapping anymore.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
arch/m68k/include/asm/mcf_pgtable.h | 23 ++---------------------
arch/m68k/include/asm/motorola_pgtable.h | 15 ---------------
arch/m68k/include/asm/pgtable_no.h | 2 --
arch/m68k/include/asm/sun3_pgtable.h | 15 ---------------
4 files changed, 2 insertions(+), 53 deletions(-)
--- a/arch/m68k/include/asm/mcf_pgtable.h
+++ b/arch/m68k/include/asm/mcf_pgtable.h
@@ -35,7 +35,6 @@
* hitting hardware.
*/
#define CF_PAGE_DIRTY 0x00000001
-#define CF_PAGE_FILE 0x00000200
#define CF_PAGE_ACCESSED 0x00001000
#define _PAGE_CACHE040 0x020 /* 68040 cache mode, cachable, copyback */
@@ -243,11 +242,6 @@ static inline int pte_young(pte_t pte)
return pte_val(pte) & CF_PAGE_ACCESSED;
}
-static inline int pte_file(pte_t pte)
-{
- return pte_val(pte) & CF_PAGE_FILE;
-}
-
static inline int pte_special(pte_t pte)
{
return 0;
@@ -391,26 +385,13 @@ static inline void cache_page(void *vadd
*ptep = pte_mkcache(*ptep);
}
-#define PTE_FILE_MAX_BITS 21
-#define PTE_FILE_SHIFT 11
-
-static inline unsigned long pte_to_pgoff(pte_t pte)
-{
- return pte_val(pte) >> PTE_FILE_SHIFT;
-}
-
-static inline pte_t pgoff_to_pte(unsigned pgoff)
-{
- return __pte((pgoff << PTE_FILE_SHIFT) + CF_PAGE_FILE);
-}
-
/*
* Encode and de-code a swap entry (must be !pte_none(e) && !pte_present(e))
*/
#define __swp_type(x) ((x).val & 0xFF)
-#define __swp_offset(x) ((x).val >> PTE_FILE_SHIFT)
+#define __swp_offset(x) ((x).val >> 11)
#define __swp_entry(typ, off) ((swp_entry_t) { (typ) | \
- (off << PTE_FILE_SHIFT) })
+ (off << 11) })
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(x) (__pte((x).val))
--- a/arch/m68k/include/asm/motorola_pgtable.h
+++ b/arch/m68k/include/asm/motorola_pgtable.h
@@ -28,7 +28,6 @@
#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_NOCACHE)
#define _PAGE_PROTNONE 0x004
-#define _PAGE_FILE 0x008 /* pagecache or swap? */
#ifndef __ASSEMBLY__
@@ -168,7 +167,6 @@ static inline void pgd_set(pgd_t *pgdp,
static inline int pte_write(pte_t pte) { return !(pte_val(pte) & _PAGE_RONLY); }
static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; }
static inline int pte_special(pte_t pte) { return 0; }
static inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) |= _PAGE_RONLY; return pte; }
@@ -266,19 +264,6 @@ static inline void cache_page(void *vadd
}
}
-#define PTE_FILE_MAX_BITS 28
-
-static inline unsigned long pte_to_pgoff(pte_t pte)
-{
- return pte.pte >> 4;
-}
-
-static inline pte_t pgoff_to_pte(unsigned off)
-{
- pte_t pte = { (off << 4) + _PAGE_FILE };
- return pte;
-}
-
/* Encode and de-code a swap entry (must be !pte_none(e) && !pte_present(e)) */
#define __swp_type(x) (((x).val >> 4) & 0xff)
#define __swp_offset(x) ((x).val >> 12)
--- a/arch/m68k/include/asm/pgtable_no.h
+++ b/arch/m68k/include/asm/pgtable_no.h
@@ -37,8 +37,6 @@ extern void paging_init(void);
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
-static inline int pte_file(pte_t pte) { return 0; }
-
/*
* ZERO_PAGE is a global shared page that is always zero: used
* for zero-mapped memory areas etc..
--- a/arch/m68k/include/asm/sun3_pgtable.h
+++ b/arch/m68k/include/asm/sun3_pgtable.h
@@ -38,8 +38,6 @@
#define _PAGE_PRESENT (SUN3_PAGE_VALID)
#define _PAGE_ACCESSED (SUN3_PAGE_ACCESSED)
-#define PTE_FILE_MAX_BITS 28
-
/* Compound page protection values. */
//todo: work out which ones *should* have SUN3_PAGE_NOCACHE and fix...
// is it just PAGE_KERNEL and PAGE_SHARED?
@@ -168,7 +166,6 @@ static inline void pgd_clear (pgd_t *pgd
static inline int pte_write(pte_t pte) { return pte_val(pte) & SUN3_PAGE_WRITEABLE; }
static inline int pte_dirty(pte_t pte) { return pte_val(pte) & SUN3_PAGE_MODIFIED; }
static inline int pte_young(pte_t pte) { return pte_val(pte) & SUN3_PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte) { return pte_val(pte) & SUN3_PAGE_ACCESSED; }
static inline int pte_special(pte_t pte) { return 0; }
static inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) &= ~SUN3_PAGE_WRITEABLE; return pte; }
@@ -202,18 +199,6 @@ static inline pmd_t *pmd_offset (pgd_t *
return (pmd_t *) pgd;
}
-static inline unsigned long pte_to_pgoff(pte_t pte)
-{
- return pte.pte & SUN3_PAGE_PGNUM_MASK;
-}
-
-static inline pte_t pgoff_to_pte(unsigned off)
-{
- pte_t pte = { off + SUN3_PAGE_ACCESSED };
- return pte;
-}
-
-
/* Find an entry in the third-level pagetable. */
#define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE-1))
#define pte_offset_kernel(pmd, address) ((pte_t *) __pmd_page(*pmd) + pte_index(address))
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