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Aw: Re: Setting mtime doesn't work after copying a file with mmap

Brett Lymn <> wrote:

> Try using msync with the invalidate option, that should push the pages
> out to disk.

That works, thank you!

The msync does now block and hence slow down the application, but the sync is an advantage in the special case I use it.
But in general a sync should not be mandatory (for performance reasons). So isn't it a kernel bug that mtime is updated when pages are written back?


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