Re: [fuse-devel] delta filesystem prototype

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Dave Kleikamp:
> > - you have two mmap for a single file
> 
> Explain what you mean by a single file.  If there are two mmaps to the
> upper file, they will see the same changes.  If one is to the upper
> file, and one is to the lower file, they will NOT be mmap'ed to the same
> file.

A regular file on the lower readonly layer. Not a single block/page is
copied-up yet.


> No.  The first mapping is not even aware of the second mapping.  It
> continues to see the read-only data

Should the first mapping see the latest (modified) content?


J. R. Okajima
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