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SubjectRe: [PATCH] splice support #2
Jens Axboe wrote:
> On Fri, Mar 31 2006, Linus Torvalds wrote:
>
>>
>>On Fri, 31 Mar 2006, Jens Axboe wrote:
>>
>>>> ssize_t psplice(int fdin, int fdout, size_t len, off_t ofs, unsigned flags);
>>>
>>>I definitely see some valid reasons for adding a file offset instead of
>>>using ->f_pos, I'll leave that decision up to Linus though. Linus?
>>
>>I think a file offset is fine, the one thing holding me back was just the
>>interface. One file offset per fd? Or just have the rule that the file
>>offset is for the "non-pipe" device?
>
>
> Intuitively, I'd expect the offset to be tied to the non-pipe if I were
> to eg see this for the first time. So my vote would go for that.
>

Eee! That means that splice(file_fd, pipe_fd, 1000) and splice(pipe_fd,
file_fd, 1000) have different semantics. It also would seem to prevent
ever implementing direct file-to-file splicing.

--Andy
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