Get rid of all ugly PTE hacks.

1 files changed, 0 insertions, 133 deletions

diff --git a/linux-core/drm_compat.c b/linux-core/drm_compat.c
index 8dbc636a..81a2bd84 100644
--- a/linux-core/drm_compat.c
+++ b/linux-core/drm_compat.c
@@ -26,139 +26,6 @@
  */
 
 #include "drmP.h"
-#include <asm/pgtable.h>
-#include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
-
-#ifdef MODULE
-void pgd_clear_bad(pgd_t * pgd)
-{
-	pgd_ERROR(*pgd);
-	pgd_clear(pgd);
-}
-
-void pud_clear_bad(pud_t * pud)
-{
-	pud_ERROR(*pud);
-	pud_clear(pud);
-}
-
-void pmd_clear_bad(pmd_t * pmd)
-{
-	pmd_ERROR(*pmd);
-	pmd_clear(pmd);
-}
-#endif
-
-static inline void change_pte_range(struct mm_struct *mm, pmd_t * pmd,
-				    unsigned long addr, unsigned long end)
-{
-	pte_t *pte;
-	struct page *page;
-	unsigned long pfn;
-
-	pte = pte_offset_map(pmd, addr);
-	do {
-		if (pte_present(*pte)) {
-			pte_t ptent;
-			pfn = pte_pfn(*pte);
-			ptent = *pte;
-			ptep_get_and_clear(mm, addr, pte);
-			if (pfn_valid(pfn)) {
-				page = pfn_to_page(pfn);
-				if (atomic_add_negative(-1, &page->_mapcount)) {
-					if (page_test_and_clear_dirty(page))
-						set_page_dirty(page);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
-					dec_zone_page_state(page, NR_FILE_MAPPED);
-#else
-					dec_page_state(nr_mapped);
-#endif			
-				}
-
-				put_page(page);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)
-				dec_mm_counter(mm, file_rss);
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)
-				dec_mm_counter(mm, rss);
-#else
-				--mm->rss;
-#endif
-			}
-		}
-	} while (pte++, addr += PAGE_SIZE, addr != end);
-	pte_unmap(pte - 1);
-}
-
-static inline void change_pmd_range(struct mm_struct *mm, pud_t * pud,
-				    unsigned long addr, unsigned long end)
-{
-	pmd_t *pmd;
-	unsigned long next;
-
-	pmd = pmd_offset(pud, addr);
-	do {
-		next = pmd_addr_end(addr, end);
-		if (pmd_none_or_clear_bad(pmd))
-			continue;
-		change_pte_range(mm, pmd, addr, next);
-	} while (pmd++, addr = next, addr != end);
-}
-
-static inline void change_pud_range(struct mm_struct *mm, pgd_t * pgd,
-				    unsigned long addr, unsigned long end)
-{
-	pud_t *pud;
-	unsigned long next;
-
-	pud = pud_offset(pgd, addr);
-	do {
-		next = pud_addr_end(addr, end);
-		if (pud_none_or_clear_bad(pud))
-			continue;
-		change_pmd_range(mm, pud, addr, next);
-	} while (pud++, addr = next, addr != end);
-}
-
-/*
- * This function should be called with all relevant spinlocks held.
- */
-
-#if 1
-void drm_clear_vma(struct vm_area_struct *vma,
-		   unsigned long addr, unsigned long end)
-{
-	struct mm_struct *mm = vma->vm_mm;
-	pgd_t *pgd;
-	unsigned long next;
-#if defined(flush_tlb_mm) || !defined(MODULE)
-	unsigned long start = addr;
-#endif
-	BUG_ON(addr >= end);
-	pgd = pgd_offset(mm, addr);
-	flush_cache_range(vma, addr, end);
-	do {
-		next = pgd_addr_end(addr, end);
-		if (pgd_none_or_clear_bad(pgd))
-			continue;
-		change_pud_range(mm, pgd, addr, next);
-	} while (pgd++, addr = next, addr != end);
-#if defined(flush_tlb_mm) || !defined(MODULE)
-	flush_tlb_range(vma, addr, end);
-#endif
-}
-#else
-
-void drm_clear_vma(struct vm_area_struct *vma,
-		   unsigned long addr, unsigned long end)
-{
-	struct mm_struct *mm = vma->vm_mm;
-
-	spin_unlock(&mm->page_table_lock);
-	(void) zap_page_range(vma, addr, end - addr, NULL);
-	spin_lock(&mm->page_table_lock);
-}
-#endif
 
 #if defined(CONFIG_X86) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15))
 int drm_map_page_into_agp(struct page *page)