IO buffer alignment for block devices

Saeed Bishara
2004-09-13T12:48:49Z

Hi,
Is there any minimal alignment for the IO buffers (sg and single)
sent to a scsi LLD?
I found that buffers that come from buffer cache, page cache and sg
are page aligned , and the raw driver send sector aligned buffers.
so can I assume that the minimal alignment of the buffer is 512 bytes?
thanks
saeed