X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=mm%2Ffremap.c;h=84a13b30fd6f8a9ca2a416bc1320729ffd7ab2bb;hb=refs%2Fheads%2Fvserver;hp=f7b6e22163ca316891e77660f239f452f8cfc95b;hpb=e0ff8aa1acd079b70e796571917ae0449b7c465b;p=linux-2.6.git

diff --git a/mm/fremap.c b/mm/fremap.c
index f7b6e2216..84a13b30f 100644
--- a/mm/fremap.c
+++ b/mm/fremap.c
@@ -40,7 +40,7 @@ static int zap_pte(struct mm_struct *mm, struct vm_area_struct *vma,
 	} else {
 		if (!pte_file(pte))
 			free_swap_and_cache(pte_to_swp_entry(pte));
-		pte_clear(mm, addr, ptep);
+		pte_clear_not_present_full(mm, addr, ptep, 0);
 	}
 	return !!page;
 }
@@ -68,17 +68,15 @@ int install_page(struct mm_struct *mm, struct vm_area_struct *vma,
 	 * caller about it.
 	 */
 	err = -EINVAL;
-	if (vma->vm_file) {
-		inode = vma->vm_file->f_mapping->host;
-		size = (i_size_read(inode) + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
-		if (!page->mapping || page->index >= size)
-			goto unlock;
-		err = -ENOMEM;
-		if (page_mapcount(page) > INT_MAX/2)
-			goto unlock;
-		if (!vx_rsspages_avail(mm, 1))
-			goto unlock;
-	}
+	inode = vma->vm_file->f_mapping->host;
+	size = (i_size_read(inode) + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
+	if (!page->mapping || page->index >= size)
+		goto unlock;
+	err = -ENOMEM;
+	if (page_mapcount(page) > INT_MAX/2)
+		goto unlock;
+	if (!vx_rss_avail(mm, 1))
+		goto unlock;
 
 	if (pte_none(*pte) || !zap_pte(mm, vma, addr, pte))
 		inc_mm_counter(mm, file_rss);
@@ -106,7 +104,6 @@ int install_file_pte(struct mm_struct *mm, struct vm_area_struct *vma,
 {
 	int err = -ENOMEM;
 	pte_t *pte;
-	pte_t pte_val;
 	spinlock_t *ptl;
 
 	pte = get_locked_pte(mm, addr, &ptl);
@@ -119,7 +116,6 @@ int install_file_pte(struct mm_struct *mm, struct vm_area_struct *vma,
 	}
 
 	set_pte_at(mm, addr, pte, pgoff_to_pte(pgoff));
-	pte_val = *pte;
 	/*
 	 * We don't need to run update_mmu_cache() here because the "file pte"
 	 * being installed by install_file_pte() is not a real pte - it's a