Douglas Gilbert wrote:
Which in turn makes me think of applying the same idea
to max_sectors
shost->max_sectors = MAX_512B_SECTORS_UNLIMITED;
Won't work. max_sectors is communicated to the block layer, where we
limit the overall size of the request for practical reasons.
Read the comment in libata-scsi's slave_configure:
/* TODO: 1024 is an arbitrary number, not the
* hardware maximum. This should be increased to
* 65534 when Jens Axboe's patch for dynamically
* determining max_sectors is merged.
*/
Right now, setting the true hardware / command set maximum would use way
too much memory, with no way to get feedback from the VM.
This is why SCSI_DEFAULT_MAX_SECTORS is defined to 1024.
Jeff
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