On Wed, 2011-01-26 at 20:44 +0530, Srikar Dronamraju wrote:

So it simplifies to 

        down_read(&mm->mmap_sem);
        vma = find_vma(mm, probept);
        if (valid_vma(vma)) {
               u = find_uprobe(vma->vm_file->f_mapping->host,
                               probept - vma->vm_start);
        }
        up_read(&mm->mmap_sem); 

Almost, the offset within a file is something like:

  (address - vma->vm_start) + (vma->vm_pgoff << PAGE_SHIFT)


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