[RFC] [PATCH 2.6.37-rc5-tip 14/20] 14: uprobes: Handing int3 and singlestep exception.

[Srikar Dronamraju]

* Peter Zijlstra <peterz@infradead.org> [2011-01-25 14:56:19]:

> On Thu, 2010-12-16 at 15:29 +0530, Srikar Dronamraju wrote:
> > +               down_read(&mm->mmap_sem);
> > +               for (vma = mm->mmap; vma; vma = vma->vm_next) {
> > +                       if (!valid_vma(vma))
> > +                               continue;
> > +                       if (probept < vma->vm_start || probept > vma->vm_end)
> > +                               continue;
> > +                       u = find_uprobe(vma->vm_file->f_mapping->host,
> > +                                       probept - vma->vm_start);
> > +                       if (u)
> > +                               break;
> > +               }
> > +               up_read(&mm->mmap_sem); 
> 
> One has to ask, what's wrong with find_vma() ?

Are you looking for something like this.

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