Re: [PATCH] Fix vmtruncate race and distributed filesystem race

[Andrew Morton]

Dave McCracken <[e-mail]> wrote:
>
> I also think if we can solve both the vmtruncate and the distributed file
> system races without adding any vm_ops, we should.
> 
> Here's a new patch.  Does this look better?

grumble, mutter.  It's certainly simple enough.

+	mapping = vma->vm_file->f_dentry->d_inode->i_mapping;

I'm not so sure about this one now.  write() alters dentry->d_inode but
truncate alters dentry->d_inode->i_mapping->host.  Unless truncate is
changed we have the wrong mapping here.

I'll put it back to the original while I try to work out why truncate isn't
wrong...