From: Andi Kleen <ak@linux.intel.com>
To: Michal Hocko <mhocko@kernel.org>,
Matthew Wilcox <willy@infradead.org>,
akpm@linux-foundation.org, mtk.manpages@gmail.com,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Davidlohr Bueso <dbueso@suse.de>,
khandual@linux.vnet.ibm.com
Subject: Re: [PATCH] mm,hugetlb: compute page_size_log properly
Date: Wed, 12 Apr 2017 09:30:31 -0700 [thread overview]
Message-ID: <20170412163031.GE4021@tassilo.jf.intel.com> (raw)
In-Reply-To: <20170412161829.GA16422@linux-80c1.suse>
On Wed, Apr 12, 2017 at 09:18:29AM -0700, Davidlohr Bueso wrote:
> On Thu, 30 Mar 2017, Michal Hocko wrote:
>
> > On Wed 29-03-17 10:45:14, Andi Kleen wrote:
> > > On Wed, Mar 29, 2017 at 10:06:25AM +0200, Michal Hocko wrote:
> > > >
> > > > Do we actually have any users?
> > >
> > > Yes this feature is widely used.
> >
> > Considering that none of SHM_HUGE* has been exported to the userspace
> > headers all the users would have to use the this flag by the value and I
> > am quite skeptical that application actually do that. Could you point me
> > to some projects that use this?
>
> Hmm Andrew, if there's not one example, could you please pick up this patch?
?!? We just don't break user ABIs this way in Linux!
Just because you don't like something you cannot simply remove it.
I don't know if there are open source users, but there are known closed
source users for which this was originally implemented.
-Andi
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next prev parent reply other threads:[~2017-04-12 16:30 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-08 17:06 Davidlohr Bueso
2017-03-08 19:39 ` Andi Kleen
2017-03-09 3:24 ` Anshuman Khandual
2017-03-09 8:55 ` Michal Hocko
2017-03-28 16:53 ` Davidlohr Bueso
2017-03-28 16:55 ` Davidlohr Bueso
2017-03-28 17:54 ` Matthew Wilcox
2017-03-29 8:06 ` Michal Hocko
2017-03-29 17:45 ` Andi Kleen
2017-03-30 6:12 ` Michal Hocko
2017-04-12 16:18 ` Davidlohr Bueso
2017-04-12 16:30 ` Andi Kleen [this message]
2017-04-12 17:21 ` Matthew Wilcox
2017-04-13 6:02 ` Aneesh Kumar K.V
2017-04-13 12:46 ` Matthew Wilcox
2017-07-17 22:27 ` Mike Kravetz
2017-07-17 22:27 ` [RFC PATCH 1/3] mm:hugetlb: Define system call hugetlb size encodings in single file Mike Kravetz
2017-07-18 0:00 ` Matthew Wilcox
2017-07-26 9:50 ` Michal Hocko
2017-07-17 22:28 ` [RFC PATCH 2/3] mm: arch: Use new hugetlb size encoding definitions Mike Kravetz
2017-07-26 9:52 ` Michal Hocko
2017-07-17 22:28 ` [RFC PATCH 3/3] mm: shm: " Mike Kravetz
2017-07-26 9:53 ` Michal Hocko
2017-07-26 10:07 ` Michal Hocko
2017-07-26 17:39 ` Mike Kravetz
2017-07-26 18:48 ` Matthew Wilcox
2017-07-27 7:50 ` Michal Hocko
2017-07-27 21:18 ` Mike Kravetz
2017-07-28 6:30 ` Michal Hocko
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