X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=mm%2Fmmap.c;fp=mm%2Fmmap.c;h=5d92d30c20e8fcccc7c4eda8bf061275e1d846aa;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=f6940d1b3338ab57153ba69c5f4339a18edb00fc;hpb=4e76c8a9fa413ccc09d3f7f664183dcce3555d57;p=linux-2.6.git

diff --git a/mm/mmap.c b/mm/mmap.c
index f6940d1b3..5d92d30c2 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -31,6 +31,10 @@
 #include <asm/cacheflush.h>
 #include <asm/tlb.h>
 
+#ifndef arch_mmap_check
+#define arch_mmap_check(addr, len, flags)	(0)
+#endif
+
 static void unmap_region(struct mm_struct *mm,
 		struct vm_area_struct *vma, struct vm_area_struct *prev,
 		unsigned long start, unsigned long end);
@@ -61,6 +65,13 @@ pgprot_t protection_map[16] = {
 	__S000, __S001, __S010, __S011, __S100, __S101, __S110, __S111
 };
 
+pgprot_t vm_get_page_prot(unsigned long vm_flags)
+{
+	return protection_map[vm_flags &
+				(VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)];
+}
+EXPORT_SYMBOL(vm_get_page_prot);
+
 int sysctl_overcommit_memory = OVERCOMMIT_GUESS;  /* heuristic overcommit */
 int sysctl_overcommit_ratio = 50;	/* default is 50% */
 int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT;
@@ -97,7 +108,7 @@ int __vm_enough_memory(long pages, int cap_sys_admin)
 	if (sysctl_overcommit_memory == OVERCOMMIT_GUESS) {
 		unsigned long n;
 
-		free = get_page_cache_size();
+		free = global_page_state(NR_FILE_PAGES);
 		free += nr_swap_pages;
 
 		/*
@@ -1076,7 +1087,8 @@ munmap_back:
 	vma->vm_start = addr;
 	vma->vm_end = addr + len;
 	vma->vm_flags = vm_flags;
-	vma->vm_page_prot = protection_map[vm_flags & 0x0f];
+	vma->vm_page_prot = protection_map[vm_flags &
+				(VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)];
 	vma->vm_pgoff = pgoff;
 
 	if (file) {
@@ -1117,6 +1129,10 @@ munmap_back:
 	pgoff = vma->vm_pgoff;
 	vm_flags = vma->vm_flags;
 
+	if (vma_wants_writenotify(vma))
+		vma->vm_page_prot =
+			protection_map[vm_flags & (VM_READ|VM_WRITE|VM_EXEC)];
+
 	if (!file || !vma_merge(mm, prev, addr, vma->vm_end,
 			vma->vm_flags, NULL, file, pgoff, vma_policy(vma))) {
 		file = vma->vm_file;
@@ -1392,7 +1408,7 @@ get_unmapped_area_prot(struct file *file, unsigned long addr, unsigned long len,
 
 EXPORT_SYMBOL(get_unmapped_area_prot);
 
-#define SHLIB_BASE             0x00111000
+#define SHLIB_BASE             0x00110000
 
 unsigned long arch_get_unmapped_exec_area(struct file *filp, unsigned long addr0,
 		unsigned long len0, unsigned long pgoff, unsigned long flags)
@@ -2021,7 +2037,8 @@ unsigned long do_brk(unsigned long addr, unsigned long len)
 	vma->vm_end = addr + len;
 	vma->vm_pgoff = pgoff;
 	vma->vm_flags = flags;
-	vma->vm_page_prot = protection_map[flags & 0x0f];
+	vma->vm_page_prot = protection_map[flags &
+				(VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)];
 	vma_link(mm, vma, prev, rb_link, rb_parent);
 out:
 	vx_vmpages_add(mm, len >> PAGE_SHIFT);
@@ -2238,7 +2255,7 @@ int install_special_mapping(struct mm_struct *mm,
 	vma->vm_private_data = pages;
 
 	insert_vm_struct(mm, vma);
-	mm->total_vm += len >> PAGE_SHIFT;
+	vx_vmpages_add(mm, len >> PAGE_SHIFT);
 
 	if (!vdso_populate)
 		return 0;