On Mon, 01 Nov 1999 15:53:07 -0700, "Jeff V. Merkey"
<jmerkey@timpanogas.com> said:
> As Linus puts it, they are "living in sin" rathe than incestuous. If
> you can show me some async I/O code, I'd love to see it and try to make
> this work.
Look at "brw_page" in fs/buffer.c. It creates new temporary
buffer_heads with which to do IO on a page, and submits them with the
"end_buffer_io_async" callback. That callback cleans up after the IOs
and wakes up any processes waiting on the page IO.
The buffer_heads are never in the buffer cache at any time.
--Stephen
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