vma = find_vma(mm, start);
for (;;) {
struct file *file;
+ loff_t fstart, fend;
/* Still start < end. */
error = -ENOMEM;
goto out_unlock;
}
file = vma->vm_file;
+ fstart = start + ((loff_t)vma->vm_pgoff << PAGE_SHIFT);
+ fend = fstart + (min(end, vma->vm_end) - start) - 1;
start = vma->vm_end;
if ((flags & MS_SYNC) && file &&
(vma->vm_flags & VM_SHARED)) {
get_file(file);
up_read(&mm->mmap_sem);
- error = vfs_fsync(file, 0);
+ if (vma->vm_flags & VM_NONLINEAR)
+ error = vfs_fsync(file, 1);
+ else
+ error = vfs_fsync_range(file, fstart, fend, 1);
fput(file);
if (error || start >= end)
goto out;