if (blk_queue_nonrot(q))
dev->dev_attrib.is_nonrot = 1;
+
return 0;
out_free_bioset:
sense_reason_t ret = 0;
int dl, bd_dl, err;
+ /* We never set ANC_SUP */
+ if (cmd->t_task_cdb[1])
+ return TCM_INVALID_CDB_FIELD;
+
+ if (cmd->data_length == 0) {
+ target_complete_cmd(cmd, SAM_STAT_GOOD);
+ return 0;
+ }
+
if (cmd->data_length < 8) {
pr_warn("UNMAP parameter list length %u too small\n",
cmd->data_length);
- return TCM_INVALID_PARAMETER_LIST;
+ return TCM_PARAMETER_LIST_LENGTH_ERROR;
}
buf = transport_kmap_data_sg(cmd);
int rc;
rc = blkdev_issue_discard(ib_dev->ibd_bd, cmd->t_task_lba,
- spc_get_write_same_sectors(cmd), GFP_KERNEL, 0);
+ sbc_get_write_same_sectors(cmd), GFP_KERNEL, 0);
if (rc < 0) {
pr_warn("blkdev_issue_discard() failed: %d\n", rc);
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
struct bio *bio;
struct bio_list list;
sector_t block_lba = cmd->t_task_lba;
- sector_t sectors = spc_get_write_same_sectors(cmd);
+ sector_t sectors = sbc_get_write_same_sectors(cmd);
sg = &cmd->t_data_sg[0];
u32 sg_num = sgl_nents;
sector_t block_lba;
unsigned bio_cnt;
- int rw;
+ int rw = 0;
int i;
if (data_direction == DMA_TO_DEVICE) {
+ struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
+ struct request_queue *q = bdev_get_queue(ib_dev->ibd_bd);
/*
- * Force data to disk if we pretend to not have a volatile
- * write cache, or the initiator set the Force Unit Access bit.
+ * Force writethrough using WRITE_FUA if a volatile write cache
+ * is not enabled, or if initiator set the Force Unit Access bit.
*/
- if (dev->dev_attrib.emulate_write_cache == 0 ||
- (dev->dev_attrib.emulate_fua_write > 0 &&
- (cmd->se_cmd_flags & SCF_FUA)))
- rw = WRITE_FUA;
- else
+ if (q->flush_flags & REQ_FUA) {
+ if (cmd->se_cmd_flags & SCF_FUA)
+ rw = WRITE_FUA;
+ else if (!(q->flush_flags & REQ_FLUSH))
+ rw = WRITE_FUA;
+ } else {
rw = WRITE;
+ }
} else {
rw = READ;
}
return sbc_parse_cdb(cmd, &iblock_sbc_ops);
}
+bool iblock_get_write_cache(struct se_device *dev)
+{
+ struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
+ struct block_device *bd = ib_dev->ibd_bd;
+ struct request_queue *q = bdev_get_queue(bd);
+
+ return q->flush_flags & REQ_FLUSH;
+}
+
static struct se_subsystem_api iblock_template = {
.name = "iblock",
.inquiry_prod = "IBLOCK",
.show_configfs_dev_params = iblock_show_configfs_dev_params,
.get_device_type = sbc_get_device_type,
.get_blocks = iblock_get_blocks,
+ .get_write_cache = iblock_get_write_cache,
};
static int __init iblock_module_init(void)