Commit 636a002b authored by Kirill A. Shutemov's avatar Kirill A. Shutemov Committed by Linus Torvalds

ia64: drop _PAGE_FILE and pte_file()-related helpers

We've replaced remap_file_pages(2) implementation with emulation.  Nobody
creates non-linear mapping anymore.

This patch also increase number of bits availble for swap offset.
Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent d99f95e6
...@@ -57,9 +57,6 @@ ...@@ -57,9 +57,6 @@
#define _PAGE_ED (__IA64_UL(1) << 52) /* exception deferral */ #define _PAGE_ED (__IA64_UL(1) << 52) /* exception deferral */
#define _PAGE_PROTNONE (__IA64_UL(1) << 63) #define _PAGE_PROTNONE (__IA64_UL(1) << 63)
/* Valid only for a PTE with the present bit cleared: */
#define _PAGE_FILE (1 << 1) /* see swap & file pte remarks below */
#define _PFN_MASK _PAGE_PPN_MASK #define _PFN_MASK _PAGE_PPN_MASK
/* Mask of bits which may be changed by pte_modify(); the odd bits are there for _PAGE_PROTNONE */ /* Mask of bits which may be changed by pte_modify(); the odd bits are there for _PAGE_PROTNONE */
#define _PAGE_CHG_MASK (_PAGE_P | _PAGE_PROTNONE | _PAGE_PL_MASK | _PAGE_AR_MASK | _PAGE_ED) #define _PAGE_CHG_MASK (_PAGE_P | _PAGE_PROTNONE | _PAGE_PL_MASK | _PAGE_AR_MASK | _PAGE_ED)
...@@ -300,7 +297,6 @@ extern unsigned long VMALLOC_END; ...@@ -300,7 +297,6 @@ extern unsigned long VMALLOC_END;
#define pte_exec(pte) ((pte_val(pte) & _PAGE_AR_RX) != 0) #define pte_exec(pte) ((pte_val(pte) & _PAGE_AR_RX) != 0)
#define pte_dirty(pte) ((pte_val(pte) & _PAGE_D) != 0) #define pte_dirty(pte) ((pte_val(pte) & _PAGE_D) != 0)
#define pte_young(pte) ((pte_val(pte) & _PAGE_A) != 0) #define pte_young(pte) ((pte_val(pte) & _PAGE_A) != 0)
#define pte_file(pte) ((pte_val(pte) & _PAGE_FILE) != 0)
#define pte_special(pte) 0 #define pte_special(pte) 0
/* /*
...@@ -472,27 +468,16 @@ extern void paging_init (void); ...@@ -472,27 +468,16 @@ extern void paging_init (void);
* *
* Format of swap pte: * Format of swap pte:
* bit 0 : present bit (must be zero) * bit 0 : present bit (must be zero)
* bit 1 : _PAGE_FILE (must be zero) * bits 1- 7: swap-type
* bits 2- 8: swap-type * bits 8-62: swap offset
* bits 9-62: swap offset
* bit 63 : _PAGE_PROTNONE bit
*
* Format of file pte:
* bit 0 : present bit (must be zero)
* bit 1 : _PAGE_FILE (must be one)
* bits 2-62: file_offset/PAGE_SIZE
* bit 63 : _PAGE_PROTNONE bit * bit 63 : _PAGE_PROTNONE bit
*/ */
#define __swp_type(entry) (((entry).val >> 2) & 0x7f) #define __swp_type(entry) (((entry).val >> 1) & 0x7f)
#define __swp_offset(entry) (((entry).val << 1) >> 10) #define __swp_offset(entry) (((entry).val << 1) >> 9)
#define __swp_entry(type,offset) ((swp_entry_t) { ((type) << 2) | ((long) (offset) << 9) }) #define __swp_entry(type,offset) ((swp_entry_t) { ((type) << 1) | ((long) (offset) << 8) })
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(x) ((pte_t) { (x).val }) #define __swp_entry_to_pte(x) ((pte_t) { (x).val })
#define PTE_FILE_MAX_BITS 61
#define pte_to_pgoff(pte) ((pte_val(pte) << 1) >> 3)
#define pgoff_to_pte(off) ((pte_t) { ((off) << 2) | _PAGE_FILE })
/* /*
* ZERO_PAGE is a global shared page that is always zero: used * ZERO_PAGE is a global shared page that is always zero: used
* for zero-mapped memory areas etc.. * for zero-mapped memory areas etc..
......
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