| Message ID | 1653035003-70312-5-git-send-email-john.garry@huawei.com |
|---|---|
| State | New |
| Headers | show |
| Series | DMA mapping changes for SCSI core | expand |
On 5/20/22 17:23, John Garry wrote: > ATA devices (struct ata_device) have a max_sectors field which is > configured internally in libata. This is then used to (re)configure the > associated sdev request queue max_sectors value from how it is earlier set > in __scsi_init_queue(). In __scsi_init_queue() the max_sectors value is set > according to shost limits, which includes host DMA mapping limits. > > Cap the ata_device max_sectors according to shost->max_sectors to respect > this shost limit. > > Signed-off-by: John Garry <john.garry@huawei.com> > --- > drivers/ata/libata-scsi.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c > index 06c9d90238d9..25fe89791641 100644 > --- a/drivers/ata/libata-scsi.c > +++ b/drivers/ata/libata-scsi.c > @@ -1036,6 +1036,7 @@ int ata_scsi_dev_config(struct scsi_device *sdev, struct ata_device *dev) > dev->flags |= ATA_DFLAG_NO_UNLOAD; > > /* configure max sectors */ > + dev->max_sectors = min(dev->max_sectors, sdev->host->max_sectors); > blk_queue_max_hw_sectors(q, dev->max_sectors); > > if (dev->class == ATA_DEV_ATAPI) { Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 06c9d90238d9..25fe89791641 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -1036,6 +1036,7 @@ int ata_scsi_dev_config(struct scsi_device *sdev, struct ata_device *dev) dev->flags |= ATA_DFLAG_NO_UNLOAD; /* configure max sectors */ + dev->max_sectors = min(dev->max_sectors, sdev->host->max_sectors); blk_queue_max_hw_sectors(q, dev->max_sectors); if (dev->class == ATA_DEV_ATAPI) {
ATA devices (struct ata_device) have a max_sectors field which is configured internally in libata. This is then used to (re)configure the associated sdev request queue max_sectors value from how it is earlier set in __scsi_init_queue(). In __scsi_init_queue() the max_sectors value is set according to shost limits, which includes host DMA mapping limits. Cap the ata_device max_sectors according to shost->max_sectors to respect this shost limit. Signed-off-by: John Garry <john.garry@huawei.com> --- drivers/ata/libata-scsi.c | 1 + 1 file changed, 1 insertion(+)