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SubjectRe: [Outreachy kernel] Re: [PATCH] Staging: rtl8188eu: core: Use list_for_each_entry_safe


On Wed, 4 Oct 2017, Dan Carpenter wrote:

> On Wed, Oct 04, 2017 at 03:39:30PM +0200, Julia Lawall wrote:
> >
> >
> > On Wed, 4 Oct 2017, Dan Carpenter wrote:
> >
> > > On Wed, Oct 04, 2017 at 01:58:32AM +0530, Srishti Sharma wrote:
> > > > Use list_for_each_entry_safe when the list elements may get deleted
> > > > during traversal.
> > >
> > > This patch is fine as a cleanup but none of these are actually buggy.
> >
> > I'm not sure what you are getting at with the comment. The commit doesn't
> > say that they were buggy. Perhaps the commit message could have been more
> > verbose, like "Use list operators on list_head values.
> > List_for_each_entry_safe is needed because the list elements get deleted
> ^^^^^^^^^
>
> It is not *needed*, the original code works fine. The problem with the
> original code, is that it's ugly as sin.
>
> > during the traversal"?
>
> The changelog needs to say *why* we're applying the patch. At first I
> thought it was going to fix a use after free. What I would prefer in
> the changelog is something like: "This patch is a cleanup and doesn't
> change runtime behavior. It changes an open coded list traversal to
> use list_for_each_entry_safe."

OK, Srishti, you can put that. But change the subject lines too.

julia

>
> regards,
> dan carpenter
>
>
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