Messages in this thread | | | Date | Wed, 27 Aug 2014 13:06:13 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH v10 00/21] Support ext4 on NV-DIMMs |
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On Tue, 26 Aug 2014 23:45:20 -0400 Matthew Wilcox <matthew.r.wilcox@intel.com> wrote:
> One of the primary uses for NV-DIMMs is to expose them as a block device > and use a filesystem to store files on the NV-DIMM. While that works, > it currently wastes memory and CPU time buffering the files in the page > cache. We have support in ext2 for bypassing the page cache, but it > has some races which are unfixable in the current design. This series > of patches rewrite the underlying support, and add support for direct > access to ext4.
Sat down to read all this but I'm finding it rather unwieldy - it's just a great blob of code. Is there some overall what-it-does-and-how-it-does-it roadmap?
Some explanation of why one would use ext4 instead of, say, suitably-modified ramfs/tmpfs/rd/etc?
Performance testing results?
Carsten Otte wrote filemap_xip.c and may be a useful reviewer of this work.
All the patch subjects violate Documentation/SubmittingPatches section 15 ;)
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