Doubt on mmap file backend
phk at phk.freebsd.dk
Wed Sep 19 11:42:50 UTC 2018
In message <CAC3PTxJqHqzH_9dsN8Q7jhLOonVc7CGQRscwwP86hDHGykj97w at mail.gmail.com>, Prem Kumar writes:
>Is it possible that mmap content can differ on read after write or is this
>the problem happening because read is called before the msync().Sorry ,it
>is very generic question ..Wanted to know if any idea on the behavior.
If you mean "read by another process", then yes. Only kernels with
integrated VM/buffers provide consistency without msync.
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