[ARM] 4808/2: ixp4xx: Merge nas100d-power.c into nas100d-setup.c

[sfrench/cifs-2.6.git] / mm / mmap.c

diff --git a/mm/mmap.c b/mm/mmap.c
index 4275e81e25ba69cf49b777ca2819fb6295d7b084..d2b6d44962b7c7b28b89e20cdbf1af0b0c6ada31 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -251,7 +251,8 @@ asmlinkage unsigned long sys_brk(unsigned long brk)
         * not page aligned -Ram Gupta
         */
        rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur;
-       if (rlim < RLIM_INFINITY && brk - mm->start_data > rlim)
+       if (rlim < RLIM_INFINITY && (brk - mm->start_brk) +
+                       (mm->end_data - mm->start_data) > rlim)
                goto out;
 
        newbrk = PAGE_ALIGN(brk);
@@ -912,6 +913,9 @@ unsigned long do_mmap_pgoff(struct file * file, unsigned long addr,
        if (!len)
                return -EINVAL;
 
+       if (!(flags & MAP_FIXED))
+               addr = round_hint_to_min(addr);
+
        error = arch_mmap_check(addr, len, flags);
        if (error)
                return error;
@@ -1048,8 +1052,7 @@ int vma_wants_writenotify(struct vm_area_struct *vma)
 
        /* The open routine did something to the protections already? */
        if (pgprot_val(vma->vm_page_prot) !=
-           pgprot_val(protection_map[vm_flags &
-                   (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)]))
+           pgprot_val(vm_get_page_prot(vm_flags)))
                return 0;
 
        /* Specialty mapping? */
@@ -1130,8 +1133,7 @@ munmap_back:
        vma->vm_start = addr;
        vma->vm_end = addr + len;
        vma->vm_flags = vm_flags;
-       vma->vm_page_prot = protection_map[vm_flags &
-                               (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)];
+       vma->vm_page_prot = vm_get_page_prot(vm_flags);
        vma->vm_pgoff = pgoff;
 
        if (file) {
@@ -1173,8 +1175,7 @@ munmap_back:
        vm_flags = vma->vm_flags;
 
        if (vma_wants_writenotify(vma))
-               vma->vm_page_prot =
-                       protection_map[vm_flags & (VM_READ|VM_WRITE|VM_EXEC)];
+               vma->vm_page_prot = vm_get_page_prot(vm_flags & ~VM_SHARED);
 
        if (!file || !vma_merge(mm, prev, addr, vma->vm_end,
                        vma->vm_flags, NULL, file, pgoff, vma_policy(vma))) {
@@ -1618,6 +1619,12 @@ static inline int expand_downwards(struct vm_area_struct *vma,
         */
        if (unlikely(anon_vma_prepare(vma)))
                return -ENOMEM;
+
+       address &= PAGE_MASK;
+       error = security_file_mmap(NULL, 0, 0, 0, address, 1);
+       if (error)
+               return error;
+
        anon_vma_lock(vma);
 
        /*
@@ -1625,8 +1632,6 @@ static inline int expand_downwards(struct vm_area_struct *vma,
         * is required to hold the mmap_sem in read mode.  We need the
         * anon_vma lock to serialize against concurrent expand_stacks.
         */
-       address &= PAGE_MASK;
-       error = 0;
 
        /* Somebody else might have raced and expanded it already */
        if (address < vma->vm_start) {
@@ -1937,6 +1942,10 @@ unsigned long do_brk(unsigned long addr, unsigned long len)
        if (is_hugepage_only_range(mm, addr, len))
                return -EINVAL;
 
+       error = security_file_mmap(NULL, 0, 0, 0, addr, 1);
+       if (error)
+               return error;
+
        flags = VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags;
 
        error = arch_mmap_check(addr, len, flags);
@@ -2002,8 +2011,7 @@ 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 &
-                               (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)];
+       vma->vm_page_prot = vm_get_page_prot(flags);
        vma_link(mm, vma, prev, rb_link, rb_parent);
 out:
        mm->total_vm += len >> PAGE_SHIFT;
@@ -2209,7 +2217,7 @@ int install_special_mapping(struct mm_struct *mm,
        vma->vm_end = addr + len;
 
        vma->vm_flags = vm_flags | mm->def_flags;
-       vma->vm_page_prot = protection_map[vma->vm_flags & 7];
+       vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
 
        vma->vm_ops = &special_mapping_vmops;
        vma->vm_private_data = pages;