linux-kernel - Re: [PATCH] kvmalloc: always use vmalloc if CONFIG_DEBUG

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Message-ID: <20180424161242.GK17484@dhcp22.suse.cz>
Date:   Tue, 24 Apr 2018 10:12:42 -0600
From:   Michal Hocko <mhocko@...nel.org>
To:     Mikulas Patocka <mpatocka@...hat.com>
Cc:     Matthew Wilcox <willy@...radead.org>,
        David Miller <davem@...emloft.net>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        eric.dumazet@...il.com, edumazet@...gle.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        mst@...hat.com, jasowang@...hat.com,
        virtualization@...ts.linux-foundation.org, dm-devel@...hat.com,
        Vlastimil Babka <vbabka@...e.cz>
Subject: Re: [PATCH] kvmalloc: always use vmalloc if CONFIG_DEBUG_VM

On Tue 24-04-18 11:30:40, Mikulas Patocka wrote:
> 
> 
> On Tue, 24 Apr 2018, Michal Hocko wrote:
> 
> > On Mon 23-04-18 20:25:15, Mikulas Patocka wrote:
> > 
> > > Fixing __vmalloc code 
> > > is easy and it doesn't require cooperation with maintainers.
> > 
> > But it is a hack against the intention of the scope api.
> 
> It is not!

This discussion simply doesn't make much sense it seems. The scope API
is to document the scope of the reclaim recursion critical section. That
certainly is not a utility function like vmalloc.
-- 
Michal Hocko
SUSE Labs