md: linear: Make array_size sector-based and rename it to array_sectors.

[pandora-kernel.git] / mm / mmap.c

diff --git a/mm/mmap.c b/mm/mmap.c
index 677d184..3354fdd 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -80,7 +80,7 @@ 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;
-atomic_t vm_committed_space = ATOMIC_INIT(0);
+atomic_long_t vm_committed_space = ATOMIC_LONG_INIT(0);
 
 /*
  * Check that a process has enough memory to allocate a new virtual
@@ -177,7 +177,7 @@ int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin)
         * cast `allowed' as a signed long because vm_committed_space
         * sometimes has a negative value
         */
-       if (atomic_read(&vm_committed_space) < (long)allowed)
+       if (atomic_long_read(&vm_committed_space) < (long)allowed)
                return 0;
 error:
        vm_unacct_memory(pages);
@@ -230,8 +230,11 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma)
        might_sleep();
        if (vma->vm_ops && vma->vm_ops->close)
                vma->vm_ops->close(vma);
-       if (vma->vm_file)
+       if (vma->vm_file) {
                fput(vma->vm_file);
+               if (vma->vm_flags & VM_EXECUTABLE)
+                       removed_exe_file_vma(vma->vm_mm);
+       }
        mpol_put(vma_policy(vma));
        kmem_cache_free(vm_area_cachep, vma);
        return next;
@@ -242,10 +245,16 @@ asmlinkage unsigned long sys_brk(unsigned long brk)
        unsigned long rlim, retval;
        unsigned long newbrk, oldbrk;
        struct mm_struct *mm = current->mm;
+       unsigned long min_brk;
 
        down_write(&mm->mmap_sem);
 
-       if (brk < mm->start_brk)
+#ifdef CONFIG_COMPAT_BRK
+       min_brk = mm->end_code;
+#else
+       min_brk = mm->start_brk;
+#endif
+       if (brk < min_brk)
                goto out;
 
        /*
@@ -623,8 +632,11 @@ again:                     remove_next = 1 + (end > next->vm_end);
                spin_unlock(&mapping->i_mmap_lock);
 
        if (remove_next) {
-               if (file)
+               if (file) {
                        fput(file);
+                       if (next->vm_flags & VM_EXECUTABLE)
+                               removed_exe_file_vma(mm);
+               }
                mm->map_count--;
                mpol_put(vma_policy(next));
                kmem_cache_free(vm_area_cachep, next);
@@ -1154,6 +1166,8 @@ munmap_back:
                error = file->f_op->mmap(file, vma);
                if (error)
                        goto unmap_and_free_vma;
+               if (vm_flags & VM_EXECUTABLE)
+                       added_exe_file_vma(mm);
        } else if (vm_flags & VM_SHARED) {
                error = shmem_zero_setup(vma);
                if (error)
@@ -1185,6 +1199,8 @@ munmap_back:
                mpol_put(vma_policy(vma));
                kmem_cache_free(vm_area_cachep, vma);
                fput(file);
+               if (vm_flags & VM_EXECUTABLE)
+                       removed_exe_file_vma(mm);
        } else {
                vma_link(mm, vma, prev, rb_link, rb_parent);
                file = vma->vm_file;
@@ -1817,8 +1833,11 @@ int split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
        }
        vma_set_policy(new, pol);
 
-       if (new->vm_file)
+       if (new->vm_file) {
                get_file(new->vm_file);
+               if (vma->vm_flags & VM_EXECUTABLE)
+                       added_exe_file_vma(mm);
+       }
 
        if (new->vm_ops && new->vm_ops->open)
                new->vm_ops->open(new);
@@ -2135,8 +2154,11 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
                        new_vma->vm_start = addr;
                        new_vma->vm_end = addr + len;
                        new_vma->vm_pgoff = pgoff;
-                       if (new_vma->vm_file)
+                       if (new_vma->vm_file) {
                                get_file(new_vma->vm_file);
+                               if (vma->vm_flags & VM_EXECUTABLE)
+                                       added_exe_file_vma(mm);
+                       }
                        if (new_vma->vm_ops && new_vma->vm_ops->open)
                                new_vma->vm_ops->open(new_vma);
                        vma_link(mm, new_vma, prev, rb_link, rb_parent);