Re: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait

Stephen C. Tweedie
2001-02-07T00:27:00Z

Hi,

On Tue, Feb 06, 2001 at 08:57:13PM +0100, Ingo Molnar wrote:
>
> [overhead of 512-byte bhs in the raw IO code is an artificial problem of
> the raw IO code.]

No, it is a problem of the ll_rw_block interface: buffer_heads need to
be aligned on disk at a multiple of their buffer size. Under the Unix
raw IO interface it is perfectly legal to begin a 128kB IO at offset
512 bytes into a device.

--Stephen