mm-page_alloc-hide-some-gfp-internals-and-document-the-bit-and-flag-combinations-fix

[karo-tx-linux.git] / mm / nommu.c

diff --git a/mm/nommu.c b/mm/nommu.c
index 1cc0709fcaa5312351ce69d548afadda5ce80097..1e0f1688d9a467e7922045294146c0f4f6d78cb8 100644 (file)
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1233,18 +1233,19 @@ enomem:
 /*
  * handle mapping creation for uClinux
  */
-unsigned long do_mmap_pgoff(struct file *file,
-                           unsigned long addr,
-                           unsigned long len,
-                           unsigned long prot,
-                           unsigned long flags,
-                           unsigned long pgoff,
-                           unsigned long *populate)
+unsigned long do_mmap(struct file *file,
+                       unsigned long addr,
+                       unsigned long len,
+                       unsigned long prot,
+                       unsigned long flags,
+                       vm_flags_t vm_flags,
+                       unsigned long pgoff,
+                       unsigned long *populate)
 {
        struct vm_area_struct *vma;
        struct vm_region *region;
        struct rb_node *rb;
-       unsigned long capabilities, vm_flags, result;
+       unsigned long capabilities, result;
        int ret;
 
        *populate = 0;
@@ -1262,7 +1263,7 @@ unsigned long do_mmap_pgoff(struct file *file,
 
        /* we've determined that we can make the mapping, now translate what we
         * now know into VMA flags */
-       vm_flags = determine_vm_flags(file, prot, flags, capabilities);
+       vm_flags |= determine_vm_flags(file, prot, flags, capabilities);
 
        /* we're going to need to record the mapping */
        region = kmem_cache_zalloc(vm_region_jar, GFP_KERNEL);
@@ -1496,7 +1497,7 @@ SYSCALL_DEFINE1(old_mmap, struct mmap_arg_struct __user *, arg)
 
        if (copy_from_user(&a, arg, sizeof(a)))
                return -EFAULT;
-       if (a.offset & ~PAGE_MASK)
+       if (offset_in_page(a.offset))
                return -EINVAL;
 
        return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd,
@@ -1652,9 +1653,9 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
                        goto erase_whole_vma;
                if (start < vma->vm_start || end > vma->vm_end)
                        return -EINVAL;
-               if (start & ~PAGE_MASK)
+               if (offset_in_page(start))
                        return -EINVAL;
-               if (end != vma->vm_end && end & ~PAGE_MASK)
+               if (end != vma->vm_end && offset_in_page(end))
                        return -EINVAL;
                if (start != vma->vm_start && end != vma->vm_end) {
                        ret = split_vma(mm, vma, start, 1);
@@ -1735,7 +1736,7 @@ static unsigned long do_mremap(unsigned long addr,
        if (old_len == 0 || new_len == 0)
                return (unsigned long) -EINVAL;
 
-       if (addr & ~PAGE_MASK)
+       if (offset_in_page(addr))
                return -EINVAL;
 
        if (flags & MREMAP_FIXED && new_addr != addr)