8202261: (fc) FileChannel.map and RandomAccessFile.setLength should not preallocate space

[Brian Burkhalter]

On Apr 25, 2018, at 7:46 AM, Alan Bateman <Alan.Bateman at oracle.com> wrote:

> Take 2 ...
> 
> As we've been discussing in the other threads, the changes in JDK-8168628 in JDK 9 and 8uX were a mistake that we need to fix.
> 
> […]
> 
> So I've decided to close JDK-8202116 and instead use a subset of that patch to revert JDK-8168628. In summary, this reverts RandomAccessFile.setLength and FileChannel.map so that they don't preallocate space. The rest is just cleanup.
> 
> http://cr.openjdk.java.net/~alanb/8202261/webrev/index.html

I think that this looks fine.

Brian
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