Re: [PATCH] dax, pmem: add support for msync

From	Ross Zwisler <ross.zwisler@linux.intel.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH] dax, pmem: add support for msync
Date	2015-09-03 18:50 +0200
Message-ID	<q4FS2-M8-3@gated-at.bofh.it> (permalink)
References	(1 earlier) <q3GQa-5Ns-7@gated-at.bofh.it> <q3NRD-7PA-7@gated-at.bofh.it> <q3SHD-6h9-1@gated-at.bofh.it> <q4lzY-5B5-29@gated-at.bofh.it> <q4wlI-41w-7@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Thu, Sep 03, 2015 at 09:32:02AM +0300, Boaz Harrosh wrote:
> On 09/02/2015 10:04 PM, Ross Zwisler wrote:
> > On Tue, Sep 01, 2015 at 03:18:41PM +0300, Boaz Harrosh wrote:
> <>
> >> Apps expect all these to work:
> >> 1. open mmap m-write msync ... close
> >> 2. open mmap m-write fsync ... close
> >> 3. open mmap m-write unmap ... fsync close
> >>
> >> 4. open mmap m-write sync ...
> > 
> > So basically you made close have an implicit fsync?  What about the flow that
> > looks like this:
> > 
> > 5. open mmap close m-write
> > 
> 
> What? no, close means ummap because you need a file* attached to your vma
> 
> And you miss-understood me, the vm_opts->close is the *unmap* operation not
> the file::close() operation.
> 
> I meant memory-cl_flush on unmap before the vma goes away.

Ah, got it, thanks for the clarification.
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Thread

[PATCH] dax, pmem: add support for msync Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-08-31 21:10 +0200
  Re: [PATCH] dax, pmem: add support for msync Christoph Hellwig <hch@lst.de> - 2015-08-31 21:10 +0200
    Re: [PATCH] dax, pmem: add support for msync Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-08-31 21:30 +0200
      Re: [PATCH] dax, pmem: add support for msync Christoph Hellwig <hch@lst.de> - 2015-08-31 21:40 +0200
  Re: [PATCH] dax, pmem: add support for msync Dave Chinner <david@fromorbit.com> - 2015-09-01 01:40 +0200
    Re: [PATCH] dax, pmem: add support for msync Christoph Hellwig <hch@lst.de> - 2015-09-01 09:10 +0200
      Re: [PATCH] dax, pmem: add support for msync Boaz Harrosh <boaz@plexistor.com> - 2015-09-01 14:20 +0200
        Re: [PATCH] dax, pmem: add support for msync Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-09-02 21:10 +0200
          Re: [PATCH] dax, pmem: add support for msync "Kirill A. Shutemov" <kirill@shutemov.name> - 2015-09-02 22:20 +0200
          Re: [PATCH] dax, pmem: add support for msync Boaz Harrosh <boaz@plexistor.com> - 2015-09-03 08:40 +0200
            Re: [PATCH] dax, pmem: add support for msync Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-09-03 18:50 +0200
      Re: [PATCH] dax, pmem: add support for msync Dave Chinner <david@fromorbit.com> - 2015-09-02 00:30 +0200
        Re: [PATCH] dax, pmem: add support for msync Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-09-02 05:20 +0200
          Re: [PATCH] dax, pmem: add support for msync Dave Chinner <david@fromorbit.com> - 2015-09-02 07:20 +0200
            Re: [PATCH] dax, pmem: add support for msync Boaz Harrosh <boaz@plexistor.com> - 2015-09-02 12:30 +0200
              Re: [PATCH] dax, pmem: add support for msync Dave Hansen <dave.hansen@linux.intel.com> - 2015-09-02 16:30 +0200
                Re: [PATCH] dax, pmem: add support for msync Boaz Harrosh <boaz@plexistor.com> - 2015-09-02 17:20 +0200
                Re: [PATCH] dax, pmem: add support for msync Dave Hansen <dave.hansen@linux.intel.com> - 2015-09-02 17:50 +0200
                Re: [PATCH] dax, pmem: add support for msync Boaz Harrosh <boaz@plexistor.com> - 2015-09-02 18:10 +0200
                Re: [PATCH] dax, pmem: add support for msync Dave Hansen <dave.hansen@linux.intel.com> - 2015-09-02 18:20 +0200
                Re: [PATCH] dax, pmem: add support for msync Boaz Harrosh <boaz@plexistor.com> - 2015-09-03 08:50 +0200
          Re: [PATCH] dax, pmem: add support for msync Boaz Harrosh <boaz@plexistor.com> - 2015-09-02 12:10 +0200
    Re: [PATCH] dax, pmem: add support for msync "Kirill A. Shutemov" <kirill@shutemov.name> - 2015-09-01 12:10 +0200
      Re: [PATCH] dax, pmem: add support for msync Boaz Harrosh <boaz@plexistor.com> - 2015-09-01 13:30 +0200
      Re: [PATCH] dax, pmem: add support for msync Dave Chinner <david@fromorbit.com> - 2015-09-02 00:50 +0200
        Re: [PATCH] dax, pmem: add support for msync "Kirill A. Shutemov" <kirill@shutemov.name> - 2015-09-02 11:20 +0200
          Re: [PATCH] dax, pmem: add support for msync Boaz Harrosh <boaz@plexistor.com> - 2015-09-02 11:40 +0200
            Re: [PATCH] dax, pmem: add support for msync Boaz Harrosh <boaz@plexistor.com> - 2015-09-02 11:50 +0200
              Re: [PATCH] dax, pmem: add support for msync "Kirill A. Shutemov" <kirill@shutemov.name> - 2015-09-02 11:50 +0200
                Re: [PATCH] dax, pmem: add support for msync Boaz Harrosh <boaz@plexistor.com> - 2015-09-02 12:30 +0200
          Re: [PATCH] dax, pmem: add support for msync Dave Chinner <david@fromorbit.com> - 2015-09-03 03:00 +0200
  Re: [PATCH] dax, pmem: add support for msync Boaz Harrosh <boaz@plexistor.com> - 2015-09-01 15:20 +0200
    Re: [PATCH] dax, pmem: add support for msync Ross Zwisler <ross.zwisler@linux.intel.com> - 2015-09-02 19:50 +0200

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