/*
* performs formatting of _device_ according to _fdata_
* Note: The discipline's format_function is assumed to deliver formatting
* commands to format a single unit of the device. In terms of the ECKD
* devices this means CCWs are generated to format a single track.
*/
static int dasd_format(struct dasd_block *block, struct format_data_t *fdata)
{
struct dasd_ccw_req *cqr;
struct dasd_device *base;
int rc;
base = block->base;
if (base->discipline->format_device == NULL)
return -EPERM;
if (base->state != DASD_STATE_BASIC) {
DEV_MESSAGE(KERN_WARNING, base, "%s",
"dasd_format: device is not disabled! ");
return -EBUSY;
}
DBF_DEV_EVENT(DBF_NOTICE, base,
"formatting units %d to %d (%d B blocks) flags %d",
fdata->start_unit,
fdata->stop_unit, fdata->blksize, fdata->intensity);
/* Since dasdfmt keeps the device open after it was disabled,
* there still exists an inode for this device.
* We must update i_blkbits, otherwise we might get errors when
* enabling the device later.
*/
if (fdata->start_unit == 0) {
struct block_device *bdev = bdget_disk(block->gdp, 0);
bdev->bd_inode->i_blkbits = blksize_bits(fdata->blksize);
bdput(bdev);
}
while (fdata->start_unit <= fdata->stop_unit) {
cqr = base->discipline->format_device(base, fdata);
if (IS_ERR(cqr))
return PTR_ERR(cqr);
rc = dasd_sleep_on_interruptible(cqr);
dasd_sfree_request(cqr, cqr->memdev);
if (rc) {
if (rc != -ERESTARTSYS)
DEV_MESSAGE(KERN_ERR, base,
" Formatting of unit %d failed "
"with rc = %d",
fdata->start_unit, rc);
return rc;
}
fdata->start_unit++;
}
return 0;
}
/*
* performs formatting of _device_ according to _fdata_
* Note: The discipline's format_function is assumed to deliver formatting
* commands to format a single unit of the device. In terms of the ECKD
* devices this means CCWs are generated to format a single track.
*/
static int dasd_format(struct dasd_block *block, struct format_data_t *fdata)
{
struct dasd_ccw_req *cqr;
struct dasd_device *base;
int rc;
base = block->base;
if (base->discipline->format_device == NULL)
return -EPERM;
if (base->state != DASD_STATE_BASIC) {
pr_warning("%s: The DASD cannot be formatted while it is "
"enabled\n", dev_name(&base->cdev->dev));
return -EBUSY;
}
DBF_DEV_EVENT(DBF_NOTICE, base,
"formatting units %u to %u (%u B blocks) flags %u",
fdata->start_unit,
fdata->stop_unit, fdata->blksize, fdata->intensity);
/* Since dasdfmt keeps the device open after it was disabled,
* there still exists an inode for this device.
* We must update i_blkbits, otherwise we might get errors when
* enabling the device later.
*/
if (fdata->start_unit == 0) {
struct block_device *bdev = bdget_disk(block->gdp, 0);
bdev->bd_inode->i_blkbits = blksize_bits(fdata->blksize);
bdput(bdev);
}
while (fdata->start_unit <= fdata->stop_unit) {
cqr = base->discipline->format_device(base, fdata);
if (IS_ERR(cqr))
return PTR_ERR(cqr);
rc = dasd_sleep_on_interruptible(cqr);
dasd_sfree_request(cqr, cqr->memdev);
if (rc) {
if (rc != -ERESTARTSYS)
pr_err("%s: Formatting unit %d failed with "
"rc=%d\n", dev_name(&base->cdev->dev),
fdata->start_unit, rc);
return rc;
}
fdata->start_unit++;
}
return 0;
}