Re: [RFC PATCH 07/29] memblock: remove _virt from APIs returning virtual address

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On Thu 06-09-18 15:43:21, Mike Rapoport wrote:
> On Thu, Sep 06, 2018 at 09:28:00AM +0200, Michal Hocko wrote:
> > On Wed 05-09-18 20:20:18, Mike Rapoport wrote:
> > > On Wed, Sep 05, 2018 at 12:04:36PM -0500, Rob Herring wrote:
> > > > On Wed, Sep 5, 2018 at 11:00 AM Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx> wrote:
> > > > >
> > > > > The conversion is done using
> > > > >
> > > > > sed -i 's@memblock_virt_alloc@memblock_alloc@g' \
> > > > >         $(git grep -l memblock_virt_alloc)
> > > > 
> > > > What's the reason to do this? It seems like a lot of churn even if a
> > > > mechanical change.
> > > 
> > > I felt that memblock_virt_alloc_ is too long for a prefix, e.g:
> > > memblock_virt_alloc_node_nopanic, memblock_virt_alloc_low_nopanic.
> > > 
> > > And for consistency I've changed the memblock_virt_alloc as well.
> > 
> > I would keep the current API unless the name is terribly misleading or
> > it can be improved a lot. Neither seems to be the case here. So I would
> > rather stick with the status quo.
> 
> I'm ok with the memblock_virt_alloc by itself, but having 'virt' in
> 'memblock_virt_alloc_try_nid_nopanic' and 'memblock_virt_alloc_low_nopanic'
> reduces code readability in my opinion.

Well, is _nopanic really really useful in the name. Do we even need/want
implicit panic/nopanic semantic? The code should rather check for the
return value and decide depending on the code path. I suspect removing
panic/nopanic would make the API slightly lighter.

-- 
Michal Hocko
SUSE Labs




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