Re: sendfile system call on tmpfs

[Jamie Lokier]

Hugh Dickins wrote:
> The 2.4 tmpfs did not support sendfile (or loop) until 2.4.22-pre3,
> so Red Hat's 2.4.20-13.9smp won't do it.

Oh.  Does this mean that it is faster to serve program-generated data
by mmaping an ext3 file and using sendfile() on that, than to call
write() from anonymous memory?  The former does zero-copy, the latter
doesn't.  Unfortunately the former might write to disk, though you
don't want it too.

-- Jamie
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