diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-10 16:45:56 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-10 16:45:56 -0800 |
commit | 992de5a8eca7cbd3215e3eb2c439b2c11582a58b (patch) | |
tree | 863988f84c1dd57a02fa337ecbce49263a3b9511 /arch | |
parent | b2718bffb4088faf13092db30c1ebf088ddee52e (diff) | |
parent | d5b3cf7139b8770af4ed8bb36a1ab9d290ac39e9 (diff) |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton:
"Bite-sized chunks this time, to avoid the MTA ratelimiting woes.
- fs/notify updates
- ocfs2
- some of MM"
That laconic "some MM" is mainly the removal of remap_file_pages(),
which is a big simplification of the VM, and which gets rid of a *lot*
of random cruft and special cases because we no longer support the
non-linear mappings that it used.
From a user interface perspective, nothing has changed, because the
remap_file_pages() syscall still exists, it's just done by emulating the
old behavior by creating a lot of individual small mappings instead of
one non-linear one.
The emulation is slower than the old "native" non-linear mappings, but
nobody really uses or cares about remap_file_pages(), and simplifying
the VM is a big advantage.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (78 commits)
memcg: zap memcg_slab_caches and memcg_slab_mutex
memcg: zap memcg_name argument of memcg_create_kmem_cache
memcg: zap __memcg_{charge,uncharge}_slab
mm/page_alloc.c: place zone_id check before VM_BUG_ON_PAGE check
mm: hugetlb: fix type of hugetlb_treat_as_movable variable
mm, hugetlb: remove unnecessary lower bound on sysctl handlers"?
mm: memory: merge shared-writable dirtying branches in do_wp_page()
mm: memory: remove ->vm_file check on shared writable vmas
xtensa: drop _PAGE_FILE and pte_file()-related helpers
x86: drop _PAGE_FILE and pte_file()-related helpers
unicore32: drop pte_file()-related helpers
um: drop _PAGE_FILE and pte_file()-related helpers
tile: drop pte_file()-related helpers
sparc: drop pte_file()-related helpers
sh: drop _PAGE_FILE and pte_file()-related helpers
score: drop _PAGE_FILE and pte_file()-related helpers
s390: drop pte_file()-related helpers
parisc: drop _PAGE_FILE and pte_file()-related helpers
openrisc: drop _PAGE_FILE and pte_file()-related helpers
nios2: drop _PAGE_FILE and pte_file()-related helpers
...
Diffstat (limited to 'arch')
60 files changed, 71 insertions, 689 deletions
diff --git a/arch/alpha/include/asm/pgtable.h b/arch/alpha/include/asm/pgtable.h index d8f9b7e89234..fce22cf88ee9 100644 --- a/arch/alpha/include/asm/pgtable.h +++ b/arch/alpha/include/asm/pgtable.h @@ -73,7 +73,6 @@ struct vm_area_struct; /* .. and these are ours ... */ #define _PAGE_DIRTY 0x20000 #define _PAGE_ACCESSED 0x40000 -#define _PAGE_FILE 0x80000 /* set:pagecache, unset:swap */ /* * NOTE! The "accessed" bit isn't necessarily exact: it can be kept exactly @@ -268,7 +267,6 @@ extern inline void pgd_clear(pgd_t * pgdp) { pgd_val(*pgdp) = 0; } extern inline int pte_write(pte_t pte) { return !(pte_val(pte) & _PAGE_FOW); } extern inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; } extern inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; } -extern inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; } extern inline int pte_special(pte_t pte) { return 0; } extern inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) |= _PAGE_FOW; return pte; } @@ -345,11 +343,6 @@ extern inline pte_t mk_swap_pte(unsigned long type, unsigned long offset) #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) #define __swp_entry_to_pte(x) ((pte_t) { (x).val }) -#define pte_to_pgoff(pte) (pte_val(pte) >> 32) -#define pgoff_to_pte(off) ((pte_t) { ((off) << 32) | _PAGE_FILE }) - -#define PTE_FILE_MAX_BITS 32 - #ifndef CONFIG_DISCONTIGMEM #define kern_addr_valid(addr) (1) #endif diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h index 6b0b7f7ef783..bdc8ccaf390d 100644 --- a/arch/arc/include/asm/pgtable.h +++ b/arch/arc/include/asm/pgtable.h @@ -61,7 +61,6 @@ #define _PAGE_WRITE (1<<4) /* Page has user write perm (H) */ #define _PAGE_READ (1<<5) /* Page has user read perm (H) */ #define _PAGE_MODIFIED (1<<6) /* Page modified (dirty) (S) */ -#define _PAGE_FILE (1<<7) /* page cache/ swap (S) */ #define _PAGE_GLOBAL (1<<8) /* Page is global (H) */ #define _PAGE_PRESENT (1<<10) /* TLB entry is valid (H) */ @@ -73,7 +72,6 @@ #define _PAGE_READ (1<<3) /* Page has user read perm (H) */ #define _PAGE_ACCESSED (1<<4) /* Page is accessed (S) */ #define _PAGE_MODIFIED (1<<5) /* Page modified (dirty) (S) */ -#define _PAGE_FILE (1<<6) /* page cache/ swap (S) */ #define _PAGE_GLOBAL (1<<8) /* Page is global (H) */ #define _PAGE_PRESENT (1<<9) /* TLB entry is valid (H) */ #define _PAGE_SHARED_CODE (1<<11) /* Shared Code page with cmn vaddr @@ -268,15 +266,6 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep) pte; \ }) -/* TBD: Non linear mapping stuff */ -static inline int pte_file(pte_t pte) -{ - return pte_val(pte) & _PAGE_FILE; -} - -#define PTE_FILE_MAX_BITS 30 -#define pgoff_to_pte(x) __pte(x) -#define pte_to_pgoff(x) (pte_val(x) >> 2) #define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT) #define pfn_pte(pfn, prot) (__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))) #define __pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) @@ -364,7 +353,7 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, /* Encode swap {type,off} tuple into PTE * We reserve 13 bits for 5-bit @type, keeping bits 12-5 zero, ensuring that - * both PAGE_FILE and PAGE_PRESENT are zero in a PTE holding swap "identifier" + * PAGE_PRESENT is zero in a PTE holding swap "identifier" */ #define __swp_entry(type, off) ((swp_entry_t) { \ ((type) & 0x1f) | ((off) << 13) }) diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h index f0279411847d..bcc5e300413f 100644 --- a/arch/arm/include/asm/pgtable-2level.h +++ b/arch/arm/include/asm/pgtable-2level.h @@ -118,7 +118,6 @@ #define L_PTE_VALID (_AT(pteval_t, 1) << 0) /* Valid */ #define L_PTE_PRESENT (_AT(pteval_t, 1) << 0) #define L_PTE_YOUNG (_AT(pteval_t, 1) << 1) -#define L_PTE_FILE (_AT(pteval_t, 1) << 2) /* only when !PRESENT */ #define L_PTE_DIRTY (_AT(pteval_t, 1) << 6) #define L_PTE_RDONLY (_AT(pteval_t, 1) << 7) #define L_PTE_USER (_AT(pteval_t, 1) << 8) diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h index a31ecdad4b59..18dbc82f85e5 100644 --- a/arch/arm/include/asm/pgtable-3level.h +++ b/arch/arm/include/asm/pgtable-3level.h @@ -77,7 +77,6 @@ */ #define L_PTE_VALID (_AT(pteval_t, 1) << 0) /* Valid */ #define L_PTE_PRESENT (_AT(pteval_t, 3) << 0) /* Present */ -#define L_PTE_FILE (_AT(pteval_t, 1) << 2) /* only when !PRESENT */ #define L_PTE_USER (_AT(pteval_t, 1) << 6) /* AP[1] */ #define L_PTE_SHARED (_AT(pteval_t, 3) << 8) /* SH[1:0], inner shareable */ #define L_PTE_YOUNG (_AT(pteval_t, 1) << 10) /* AF */ diff --git a/arch/arm/include/asm/pgtable-nommu.h b/arch/arm/include/asm/pgtable-nommu.h index 0642228ff785..c35e53ee6663 100644 --- a/arch/arm/include/asm/pgtable-nommu.h +++ b/arch/arm/include/asm/pgtable-nommu.h @@ -54,8 +54,6 @@ typedef pte_t *pte_addr_t; -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.. diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h index d5cac545ba33..f40354198bad 100644 --- a/arch/arm/include/asm/pgtable.h +++ b/arch/arm/include/asm/pgtable.h @@ -318,12 +318,12 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) * * 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 - * <--------------- offset ----------------------> < type -> 0 0 0 + * <--------------- offset ------------------------> < type -> 0 0 * - * This gives us up to 31 swap files and 64GB per swap file. Note that + * This gives us up to 31 swap files and 128GB per swap file. Note that * the offset field is always non-zero. */ -#define __SWP_TYPE_SHIFT 3 +#define __SWP_TYPE_SHIFT 2 #define __SWP_TYPE_BITS 5 #define __SWP_TYPE_MASK ((1 << __SWP_TYPE_BITS) - 1) #define __SWP_OFFSET_SHIFT (__SWP_TYPE_BITS + __SWP_TYPE_SHIFT) @@ -342,20 +342,6 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) */ #define MAX_SWAPFILES_CHECK() BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > __SWP_TYPE_BITS) -/* - * Encode and decode a file entry. File entries are stored in the Linux - * page tables as follows: - * - * 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 - * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 - * <----------------------- offset ------------------------> 1 0 0 - */ -#define pte_file(pte) (pte_val(pte) & L_PTE_FILE) -#define pte_to_pgoff(x) (pte_val(x) >> 3) -#define pgoff_to_pte(x) __pte(((x) << 3) | L_PTE_FILE) - -#define PTE_FILE_MAX_BITS 29 - /* Needs to be defined here and not in linux/mm.h, as it is arch dependent */ /* FIXME: this is not correct */ #define kern_addr_valid(addr) (1) diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S index ba1196c968d8..082b9f2f7e90 100644 --- a/arch/arm/mm/proc-macros.S +++ b/arch/arm/mm/proc-macros.S @@ -98,7 +98,7 @@ #endif #if !defined (CONFIG_ARM_LPAE) && \ (L_PTE_XN+L_PTE_USER+L_PTE_RDONLY+L_PTE_DIRTY+L_PTE_YOUNG+\ - L_PTE_FILE+L_PTE_PRESENT) > L_PTE_SHARED + L_PTE_PRESENT) > L_PTE_SHARED #error Invalid Linux PTE bit settings #endif #endif /* CONFIG_MMU */ diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 210d632aa5ad..4c445057169d 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -25,7 +25,6 @@ * Software defined PTE bits definition. */ #define PTE_VALID (_AT(pteval_t, 1) << 0) -#define PTE_FILE (_AT(pteval_t, 1) << 2) /* only when !pte_present() */ #define PTE_DIRTY (_AT(pteval_t, 1) << 55) #define PTE_SPECIAL (_AT(pteval_t, 1) << 56) #define PTE_WRITE (_AT(pteval_t, 1) << 57) @@ -469,13 +468,12 @@ extern pgd_t idmap_pg_dir[PTRS_PER_PGD]; /* * Encode and decode a swap entry: * bits 0-1: present (must be zero) - * bit 2: PTE_FILE - * bits 3-8: swap type - * bits 9-57: swap offset + * bits 2-7: swap type + * bits 8-57: swap offset */ -#define __SWP_TYPE_SHIFT 3 +#define __SWP_TYPE_SHIFT 2 #define __SWP_TYPE_BITS 6 -#define __SWP_OFFSET_BITS 49 +#define __SWP_OFFSET_BITS 50 #define __SWP_TYPE_MASK ((1 << __SWP_TYPE_BITS) - 1) #define __SWP_OFFSET_SHIFT (__SWP_TYPE_BITS + __SWP_TYPE_SHIFT) #define __SWP_OFFSET_MASK ((1UL << __SWP_OFFSET_BITS) - 1) @@ -493,18 +491,6 @@ extern pgd_t idmap_pg_dir[PTRS_PER_PGD]; */ #define MAX_SWAPFILES_CHECK() BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > __SWP_TYPE_BITS) -/* - * Encode and decode a file entry: - * bits 0-1: present (must be zero) - * bit 2: PTE_FILE - * bits 3-57: file offset / PAGE_SIZE - */ -#define pte_file(pte) (pte_val(pte) & PTE_FILE) -#define pte_to_pgoff(x) (pte_val(x) >> 3) -#define pgoff_to_pte(x) __pte(((x) << 3) | PTE_FILE) - -#define PTE_FILE_MAX_BITS 55 - extern int kern_addr_valid(unsigned long addr); #include <asm-generic/pgtable.h> diff --git a/arch/avr32/include/asm/pgtable.h b/arch/avr32/include/asm/pgtable.h index 4beff97e2033..ac7a817e2126 100644 --- a/arch/avr32/include/asm/pgtable.h +++ b/arch/avr32/include/asm/pgtable.h @@ -86,9 +86,6 @@ extern struct page *empty_zero_page; #define _PAGE_BIT_PRESENT 10 #define _PAGE_BIT_ACCESSED 11 /* software: page was accessed */ -/* The following flags are only valid when !PRESENT */ -#define _PAGE_BIT_FILE 0 /* software: pagecache or swap? */ - #define _PAGE_WT (1 << _PAGE_BIT_WT) #define _PAGE_DIRTY (1 << _PAGE_BIT_DIRTY) #define _PAGE_EXECUTE (1 << _PAGE_BIT_EXECUTE) @@ -101,7 +98,6 @@ extern struct page *empty_zero_page; /* Software flags */ #define _PAGE_ACCESSED (1 << _PAGE_BIT_ACCESSED) #define _PAGE_PRESENT (1 << _PAGE_BIT_PRESENT) -#define _PAGE_FILE (1 << _PAGE_BIT_FILE) /* * Page types, i.e. sizes. _PAGE_TYPE_NONE corresponds to what is @@ -210,14 +206,6 @@ static inline int pte_special(pte_t pte) return 0; } -/* - * The following only work if pte_present() is not true. - */ -static inline int pte_file(pte_t pte) -{ - return pte_val(pte) & _PAGE_FILE; -} - /* Mutator functions for PTE bits */ static inline pte_t pte_wrprotect(pte_t pte) { @@ -329,7 +317,6 @@ extern void update_mmu_cache(struct vm_area_struct * vma, * Encode and decode a swap entry * * Constraints: - * _PAGE_FILE at bit 0 * _PAGE_TYPE_* at bits 2-3 (for emulating _PAGE_PROTNONE) * _PAGE_PRESENT at bit 10 * @@ -346,18 +333,6 @@ extern void update_mmu_cache(struct vm_area_struct * vma, #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) #define __swp_entry_to_pte(x) ((pte_t) { (x).val }) -/* - * Encode and decode a nonlinear file mapping entry. We have to - * preserve _PAGE_FILE and _PAGE_PRESENT here. _PAGE_TYPE_* isn't - * necessary, since _PAGE_FILE implies !_PAGE_PROTNONE (?) - */ -#define PTE_FILE_MAX_BITS 30 -#define pte_to_pgoff(pte) (((pte_val(pte) >> 1) & 0x1ff) \ - | ((pte_val(pte) >> 11) << 9)) -#define pgoff_to_pte(off) ((pte_t) { ((((off) & 0x1ff) << 1) \ - | (((off) >> 9) << 11) \ - | _PAGE_FILE) }) - typedef pte_t *pte_addr_t; #define kern_addr_valid(addr) (1) diff --git a/arch/blackfin/include/asm/pgtable.h b/arch/blackfin/include/asm/pgtable.h index 0b049019eba7..b88a1558b0b9 100644 --- a/arch/blackfin/include/asm/pgtable.h +++ b/arch/blackfin/include/asm/pgtable.h @@ -45,11 +45,6 @@ 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; -} - #define set_pte(pteptr, pteval) (*(pteptr) = pteval) #define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval) diff --git a/arch/c6x/include/asm/pgtable.h b/arch/c6x/include/asm/pgtable.h index c0eed5b18860..78d4483ba40c 100644 --- a/arch/c6x/include/asm/pgtable.h +++ b/arch/c6x/include/asm/pgtable.h @@ -50,11 +50,6 @@ 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; -} - #define set_pte(pteptr, pteval) (*(pteptr) = pteval) #define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval) diff --git a/arch/cris/include/arch-v10/arch/mmu.h b/arch/cris/include/arch-v10/arch/mmu.h index e829e5a37bbe..47a5dd21749d 100644 --- a/arch/cris/include/arch-v10/arch/mmu.h +++ b/arch/cris/include/arch-v10/arch/mmu.h @@ -58,7 +58,6 @@ typedef struct /* Bits the HW doesn't care about but the kernel uses them in SW */ #define _PAGE_PRESENT (1<<4) /* page present in memory */ -#define _PAGE_FILE (1<<5) /* set: pagecache, unset: swap (when !PRESENT) */ #define _PAGE_ACCESSED (1<<5) /* simulated in software using valid bit */ #define _PAGE_MODIFIED (1<<6) /* simulated in software using we bit */ #define _PAGE_READ (1<<7) /* read-enabled */ @@ -105,6 +104,4 @@ typedef struct #define __S110 PAGE_SHARED #define __S111 PAGE_SHARED -#define PTE_FILE_MAX_BITS 26 - #endif diff --git a/arch/cris/include/arch-v32/arch/mmu.h b/arch/cris/include/arch-v32/arch/mmu.h index c1a13e05e963..e6db1616dee5 100644 --- a/arch/cris/include/arch-v32/arch/mmu.h +++ b/arch/cris/include/arch-v32/arch/mmu.h @@ -53,7 +53,6 @@ typedef struct * software. */ #define _PAGE_PRESENT (1 << 5) /* Page is present in memory. */ -#define _PAGE_FILE (1 << 6) /* 1=pagecache, 0=swap (when !present) */ #define _PAGE_ACCESSED (1 << 6) /* Simulated in software using valid bit. */ #define _PAGE_MODIFIED (1 << 7) /* Simulated in software using we bit. */ #define _PAGE_READ (1 << 8) /* Read enabled. */ @@ -108,6 +107,4 @@ typedef struct #define __S110 PAGE_SHARED_EXEC #define __S111 PAGE_SHARED_EXEC -#define PTE_FILE_MAX_BITS 25 - #endif /* _ASM_CRIS_ARCH_MMU_H */ diff --git a/arch/cris/include/asm/pgtable.h b/arch/cris/include/asm/pgtable.h index 8b8c86793225..e824257971c4 100644 --- a/arch/cris/include/asm/pgtable.h +++ b/arch/cris/include/asm/pgtable.h @@ -114,7 +114,6 @@ extern unsigned long empty_zero_page; static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITE; } static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_MODIFIED; } 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) @@ -290,9 +289,6 @@ static inline void update_mmu_cache(struct vm_area_struct * vma, */ #define pgtable_cache_init() do { } while (0) -#define pte_to_pgoff(x) (pte_val(x) >> 6) -#define pgoff_to_pte(x) __pte(((x) << 6) | _PAGE_FILE) - typedef pte_t *pte_addr_t; #endif /* __ASSEMBLY__ */ diff --git a/arch/frv/include/asm/pgtable.h b/arch/frv/include/asm/pgtable.h index eb0110acd19b..c49699d5902d 100644 --- a/arch/frv/include/asm/pgtable.h +++ b/arch/frv/include/asm/pgtable.h @@ -62,10 +62,6 @@ typedef pte_t *pte_addr_t; #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) #define __swp_entry_to_pte(x) ((pte_t) { (x).val }) -#ifndef __ASSEMBLY__ -static inline int pte_file(pte_t pte) { return 0; } -#endif - #define ZERO_PAGE(vaddr) ({ BUG(); NULL; }) #define swapper_pg_dir ((pgd_t *) NULL) @@ -298,7 +294,6 @@ static inline pmd_t *pmd_offset(pud_t *dir, unsigned long address) #define _PAGE_RESERVED_MASK (xAMPRx_RESERVED8 | xAMPRx_RESERVED13) -#define _PAGE_FILE 0x002 /* set:pagecache unset:swap */ #define _PAGE_PROTNONE 0x000 /* If not present */ #define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY) @@ -463,27 +458,15 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) * Handle swap and file entries * - the PTE is encoded in the following format: * bit 0: Must be 0 (!_PAGE_PRESENT) - * bit 1: Type: 0 for swap, 1 for file (_PAGE_FILE) - * bits 2-7: Swap type - * bits 8-31: Swap offset - * bits 2-31: File pgoff + * bits 1-6: Swap type + * bits 7-31: Swap offset */ -#define __swp_type(x) (((x).val >> 2) & 0x1f) -#define __swp_offset(x) ((x).val >> 8) -#define __swp_entry(type, offset) ((swp_entry_t) { ((type) << 2) | ((offset) << 8) }) +#define __swp_type(x) (((x).val >> 1) & 0x1f) +#define __swp_offset(x) ((x).val >> 7) +#define __swp_entry(type, offset) ((swp_entry_t) { ((type) << 1) | ((offset) << 7) }) #define __pte_to_swp_entry(_pte) ((swp_entry_t) { (_pte).pte }) #define __swp_entry_to_pte(x) ((pte_t) { (x).val }) -static inline int pte_file(pte_t pte) -{ - return pte.pte & _PAGE_FILE; -} - -#define PTE_FILE_MAX_BITS 29 - -#define pte_to_pgoff(PTE) ((PTE).pte >> 2) -#define pgoff_to_pte(off) __pte((off) << 2 | _PAGE_FILE) - /* Needs to be defined here and not in linux/mm.h, as it is arch dependent */ #define PageSkip(page) (0) #define kern_addr_valid(addr) (1) diff --git a/arch/hexagon/include/asm/pgtable.h b/arch/hexagon/include/asm/pgtable.h index d8bd54fa431e..6e35e71d2aea 100644 --- a/arch/hexagon/include/asm/pgtable.h +++ b/arch/hexagon/include/asm/pgtable.h @@ -62,13 +62,6 @@ extern unsigned long zero_page_mask; #define _PAGE_ACCESSED (1<<2) /* - * _PAGE_FILE is only meaningful if _PAGE_PRESENT is false, while - * _PAGE_DIRTY is only meaningful if _PAGE_PRESENT is true. - * So we can overload the bit... - */ -#define _PAGE_FILE _PAGE_DIRTY /* set: pagecache, unset = swap */ - -/* * For now, let's say that Valid and Present are the same thing. * Alternatively, we could say that it's the "or" of R, W, and X * permissions. @@ -456,57 +449,36 @@ static inline int pte_exec(pte_t pte) #define pgtable_cache_init() do { } while (0) /* - * Swap/file PTE definitions. If _PAGE_PRESENT is zero, the rest of the - * PTE is interpreted as swap information. Depending on the _PAGE_FILE - * bit, the remaining free bits are eitehr interpreted as a file offset - * or a swap type/offset tuple. Rather than have the TLB fill handler - * test _PAGE_PRESENT, we're going to reserve the permissions bits - * and set them to all zeros for swap entries, which speeds up the - * miss handler at the cost of 3 bits of offset. That trade-off can - * be revisited if necessary, but Hexagon processor architecture and - * target applications suggest a lot of TLB misses and not much swap space. + * Swap/file PTE definitions. If _PAGE_PRESENT is zero, the rest of the PTE is + * interpreted as swap information. The remaining free bits are interpreted as + * swap type/offset tuple. Rather than have the TLB fill handler test |