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Re: [PATCH] struct file leakage [message #4492 is a reply to message #4486]

Tue, 11 July 2006 23:30

Andrew Morton
Messages: 127
Registered: December 2005

Senior Member

Trond Myklebust <trond.myklebust@fys.uio.no> wrote:
>
> > > - if (error)
> > > + if (error) {
> > > + /* Does someone understand code flow here? Or it is only
> > > + * me so stupid? Anathema to whoever designed this non-sense
> > > + * with "intent.open".
> > > + */
> > > + if (!IS_ERR(nd->intent.open.file))
> > > + release_open_intent(nd);
> > > return error;
> > > + }
> > > nd->flags &= ~LOOKUP_PARENT;
> > > if (nd->last_type == LAST_BIND)
> > > goto ok;
> > >
> >
> > It's good to have some more Alexeycomments in the tree.
> >
> > I wonder if we're also needing a path_release() here. And if not, whether
> > it is still safe to run release_open_intent() against this nameidata?
> >
> > Hopefully Trond can recall what's going on in there...
>
> The patch looks correct, except that I believe we can skip the IS_ERR()
> test there: if we're following links then we presumably have not tried
> to open any files yet, so the call to release_open_intent(nd) can be
> made unconditional.

Sorry, but phrases like "looks correct" and "I believe" don't inspire
confidence. (Although what you say looks correct ;)) Are you sure?

And do we also need a path_release(nd) in there?

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[Message index]

		[PATCH] struct file leakage By: dev on Mon, 10 July 2006 09:05
		Re: [PATCH] struct file leakage By: Andrew Morton on Mon, 10 July 2006 10:05
		Re: [PATCH] struct file leakage By: Alexey Kuznetsov on Mon, 10 July 2006 10:16
		Re: [PATCH] struct file leakage By: Trond Myklebust on Tue, 11 July 2006 12:04
		Re: [PATCH] struct file leakage By: Andrew Morton on Tue, 11 July 2006 23:30
		Re: [PATCH] struct file leakage By: Trond Myklebust on Wed, 12 July 2006 00:26
		Re: [PATCH] struct file leakage By: ebiederm on Mon, 10 July 2006 11:56

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