From: Jeff Moyer <jmoyer@redhat.com>
To: Dan Williams <dan.j.williams@intel.com>
Cc: Boaz Harrosh <boaz@plexistor.com>,
Christoph Hellwig <hch@infradead.org>,
"Rudoff, Andy" <andy.rudoff@intel.com>,
Dave Chinner <david@fromorbit.com>, Arnd Bergmann <arnd@arndb.de>,
linux-nvdimm <linux-nvdimm@ml01.01.org>,
Oleg Nesterov <oleg@redhat.com>, linux-mm <linux-mm@kvack.org>,
Mel Gorman <mgorman@suse.de>,
Johannes Weiner <hannes@cmpxchg.org>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: Re: [RFC 0/2] New MAP_PMEM_AWARE mmap flag
Date: Wed, 24 Feb 2016 10:02:26 -0500 [thread overview]
Message-ID: <x49a8mqgni5.fsf@segfault.boston.devel.redhat.com> (raw)
In-Reply-To: <CAPcyv4hMJ_+o2hYU7xnKEWUcKpcPVd66e2KChwL96Qxxk2R8iQ@mail.gmail.com> (Dan Williams's message of "Tue, 23 Feb 2016 15:56:17 -0800")
Dan Williams <dan.j.williams@intel.com> writes:
>> I see. So I think your argument is that new file systems (such as Nova)
>> can have whacky new semantics, but existing file systems should provide
>> the more conservative semantics that they have provided since the dawn
>> of time (even if we add a new mmap flag to control the behavior).
>>
>> I don't agree with that. :)
>>
>
> Fair enough. Recall, I was pushing MAP_DAX not to long ago. It just
> seems like a Sisyphean effort to push an mmap flag up the XFS hill and
> maybe that effort is better spent somewhere else.
Given Dave's last response to Boaz, I see what you mean, and I also
understand Dave's reasoning better, now. FWIW, I never disagreed with
spending effort elsewhere for now. I did think that the mmap flag was
on the horizon, though. From Dave's comments, I think the prospects of
that are slim to none. That's fine, at least we have a definite
direction. Time to update all of the slide decks. =)
Cheers,
Jeff
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next prev parent reply other threads:[~2016-02-24 15:02 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-21 17:03 [RFC 0/2] New MAP_PMEM_AWARE mmap flag Boaz Harrosh
2016-02-21 17:04 ` [RFC 1/2] mmap: Define a new " Boaz Harrosh
2016-02-21 17:06 ` [RFC 2/2] dax: Support " Boaz Harrosh
2016-02-21 19:51 ` [RFC 0/2] New " Dan Williams
2016-02-21 20:24 ` Boaz Harrosh
2016-02-21 20:57 ` Dan Williams
2016-02-21 21:23 ` Boaz Harrosh
2016-02-21 22:03 ` Dan Williams
2016-02-21 22:31 ` Dave Chinner
2016-02-22 9:57 ` Boaz Harrosh
2016-02-22 15:34 ` Jeff Moyer
2016-02-22 17:44 ` Christoph Hellwig
2016-02-22 17:58 ` Jeff Moyer
2016-02-22 18:03 ` Christoph Hellwig
2016-02-22 18:52 ` Jeff Moyer
2016-02-23 9:45 ` Christoph Hellwig
2016-02-22 20:05 ` Rudoff, Andy
2016-02-23 9:52 ` Christoph Hellwig
2016-02-23 10:07 ` Rudoff, Andy
2016-02-23 12:06 ` Dave Chinner
2016-02-23 17:10 ` Ross Zwisler
2016-02-23 21:47 ` Dave Chinner
2016-02-23 22:15 ` Boaz Harrosh
2016-02-23 23:28 ` Dave Chinner
2016-02-24 0:08 ` Boaz Harrosh
2016-02-23 14:10 ` Boaz Harrosh
2016-02-23 16:56 ` Dan Williams
2016-02-23 17:05 ` Ross Zwisler
2016-02-23 17:26 ` Dan Williams
2016-02-23 21:55 ` Boaz Harrosh
2016-02-23 22:33 ` Dan Williams
2016-02-23 23:07 ` Boaz Harrosh
2016-02-23 23:23 ` Dan Williams
2016-02-23 23:40 ` Boaz Harrosh
2016-02-24 0:08 ` Dave Chinner
2016-02-23 23:28 ` Jeff Moyer
2016-02-23 23:34 ` Dan Williams
2016-02-23 23:43 ` Jeff Moyer
2016-02-23 23:56 ` Dan Williams
2016-02-24 4:09 ` Ross Zwisler
2016-02-24 19:30 ` Ross Zwisler
2016-02-25 9:46 ` Jan Kara
2016-02-25 7:44 ` Boaz Harrosh
2016-02-24 15:02 ` Jeff Moyer [this message]
2016-02-24 22:56 ` Dave Chinner
2016-02-25 16:24 ` Jeff Moyer
2016-02-25 19:11 ` Jeff Moyer
2016-02-25 20:15 ` Dave Chinner
2016-02-25 20:57 ` Jeff Moyer
2016-02-25 22:27 ` Dave Chinner
2016-02-26 4:02 ` Dan Williams
2016-02-26 10:04 ` Thanumalayan Sankaranarayana Pillai
2016-02-28 10:17 ` Boaz Harrosh
2016-03-03 17:38 ` Howard Chu
2016-02-29 20:25 ` Jeff Moyer
2016-02-25 21:08 ` Phil Terry
2016-02-25 21:39 ` Dave Chinner
2016-02-25 21:20 ` Dave Chinner
2016-02-29 20:32 ` Jeff Moyer
2016-02-23 17:25 ` Ross Zwisler
2016-02-23 22:47 ` Boaz Harrosh
2016-02-22 21:50 ` Dave Chinner
2016-02-23 13:51 ` Boaz Harrosh
2016-02-23 14:22 ` Jeff Moyer
2016-02-22 11:05 ` Boaz Harrosh
2016-03-11 6:44 ` Andy Lutomirski
2016-03-11 19:07 ` Dan Williams
2016-03-11 19:10 ` Andy Lutomirski
2016-03-11 23:02 ` Rudoff, Andy
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