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Re: fsync_range and O_RDONLY

On Thu, Feb 18, 2021 at 06:56:00PM -0500, Greg Troxel wrote:
 > > And report any errors to me, so if you're a database and I'm feeling
 > > nasty I can maybe mess with you that way. So I'm not sure it's a great
 > > idea.
 > >
 > > Right now fsync error reporting is a trainwreck though.
 > I think that's the real problem; if I open for write and fsync, then I
 > should get status back that lets me know about my writes, regardless of
 > who else asked for sync.   Once that's fixed, then the 'others asking
 > for sync' is much less of a big deal.
 > I know, ENOPATCH.

Yeah, that's highly nontrivial. More on that in a moment...

David A. Holland

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