On Tue, Feb 28 2006, Kai Makisara wrote: > This patch enables clustering and sets max_sectors to 0xffff to enable > reading and writing of large blocks with tapes (and large transfers with > sg). This change is needed after the sg and st drivers started using > chained bios through scsi_request_async() in 2.6.16. > > Signed-off-by: Kai Makisara <kai.makisara@xxxxxxxxxxx> > > --- linux-2.6.16-rc5/drivers/scsi/sym53c8xx_2/sym_glue.c 2006-02-04 13:25:48.000000000 +0200 > +++ linux-2.6.16-rc5-k1/drivers/scsi/sym53c8xx_2/sym_glue.c 2006-02-18 09:45:24.000000000 +0200 > @@ -1978,7 +1978,8 @@ static struct scsi_host_template sym2_te > .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler, > .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler, > .this_id = 7, > - .use_clustering = DISABLE_CLUSTERING, > + .use_clustering = ENABLE_CLUSTERING, > + .max_sectors = 0xFFFF, Strictly speaking, the clustering bit is unrelated. I seem to recall Gerard years ago talking about some sym chips that did not like clustering, hence it was disabled. -- Jens Axboe - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
