Re: How does the disk buffer cache work?

[Matthew Zahorik]

On Mon, 30 Dec 2002, Andrew Morton wrote:

> > [.. the next function call in read_cache_page() is lock_page(), which we
> > hang forever on ..]
>
> lock_page() will sleep until the page is unlocked.  The page is unlocked
> from end_buffer_io_sync(), which is called from within the context of
> the disk device driver's interrupt handler.

Okay, I'll track it down there.  Probably the driver not calling
end_buffer_io_sync() when timed out.  When the bad drive is detached,
things work fine - leading me to believe that hardware and interrupt
routing wise things are okay.

Thanks!

- Matt