Re: [PATCH 46/50] preempt.h: Kill dependency on list.h

From: Randy Dunlap
Date: Sat Dec 16 2023 - 19:05:09 EST




On 12/16/23 14:35, Kent Overstreet wrote:
> On Sat, Dec 16, 2023 at 06:13:41AM +0000, Matthew Wilcox wrote:
>> On Fri, Dec 15, 2023 at 10:35:47PM -0500, Kent Overstreet wrote:
>>> - INIT_HLIST_NODE(&notifier->link);
>>> + /* INIT_HLIST_NODE() open coded, to avoid dependency on list.h */
>>> + notifier->link.next = NULL;
>>> + notifier->link.pprev = NULL;
>>
>> Arguably INIT_HLIST_NODE() belongs in types.h -- we already have
>> RCUREF_INIT() and ATOMIC_INIT() in there.
>
> I think I'd prefer to keep types.h as minimal as possible - as soon as
> we start putting non type stuff in there people won't know what the
> distinction is and it'll grow.
>
> preempt.h is a bit unusual too, normally we'd just split out a _types.h
> header there but it's not so easy to split up usefully.
>

I don't feel like I have NAK power, but if I did, I would NAK
open coding of INIT_HLIST_HEAD() or anything like it.
I would expect some $maintainer to do likewise, but I could be
surprised.

--
#Randy
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