Re: [RFC] [PATCH 2.6.37-rc5-tip 14/20] 14: uprobes: Handing int3and singlestep exception.

[Peter Zijlstra]

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)


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/