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SubjectRe: splice blocks indefinitely when len > 64k?
While it should not simply hang, the splice size needs to be an even 
multiple of the page size.

Daniel Drake wrote:
> Hi,
>
> I'm experimenting with splice and have run into some unusual behaviour.
>
> I am using the utilities in git://brick.kernel.dk/data/git/splice.git
>
> In splice.h, when changing SPLICE_SIZE from:
>
> #define SPLICE_SIZE (64*1024)
>
> to
>
> #define SPLICE_SIZE ((64*1024)+1)
>
> splice-cp hangs indefinitely when copying files sized 65537 bytes or
> more. It hangs on the first splice() call.
>
> Is this a bug? I'd like to be able to copy much more than 64kb on a
> single splice call.
>
> Thanks!
> Daniel

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