> 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.
then we should either fix this limitation, or the raw IO code should split
the request up into several, variable-size bhs, so that the range is
filled out optimally with aligned bhs.
Ingo
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