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path: root/drivers/s390/block/dasd_genhd.c
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Diffstat (limited to 'drivers/s390/block/dasd_genhd.c')
-rw-r--r--drivers/s390/block/dasd_genhd.c76
1 files changed, 36 insertions, 40 deletions
diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index 47ba4462708d..aee6565aaf98 100644
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -25,14 +25,15 @@
/*
* Allocate and register gendisk structure for device.
*/
-int
-dasd_gendisk_alloc(struct dasd_device *device)
+int dasd_gendisk_alloc(struct dasd_block *block)
{
struct gendisk *gdp;
+ struct dasd_device *base;
int len;
/* Make sure the minor for this device exists. */
- if (device->devindex >= DASD_PER_MAJOR)
+ base = block->base;
+ if (base->devindex >= DASD_PER_MAJOR)
return -EBUSY;
gdp = alloc_disk(1 << DASD_PARTN_BITS);
@@ -41,9 +42,9 @@ dasd_gendisk_alloc(struct dasd_device *device)
/* Initialize gendisk structure. */
gdp->major = DASD_MAJOR;
- gdp->first_minor = device->devindex << DASD_PARTN_BITS;
+ gdp->first_minor = base->devindex << DASD_PARTN_BITS;
gdp->fops = &dasd_device_operations;
- gdp->driverfs_dev = &device->cdev->dev;
+ gdp->driverfs_dev = &base->cdev->dev;
/*
* Set device name.
@@ -53,53 +54,51 @@ dasd_gendisk_alloc(struct dasd_device *device)
* dasdaaaa - dasdzzzz : 456976 devices, added up = 475252
*/
len = sprintf(gdp->disk_name, "dasd");
- if (device->devindex > 25) {
- if (device->devindex > 701) {
- if (device->devindex > 18277)
+ if (base->devindex > 25) {
+ if (base->devindex > 701) {
+ if (base->devindex > 18277)
len += sprintf(gdp->disk_name + len, "%c",
- 'a'+(((device->devindex-18278)
+ 'a'+(((base->devindex-18278)
/17576)%26));
len += sprintf(gdp->disk_name + len, "%c",
- 'a'+(((device->devindex-702)/676)%26));
+ 'a'+(((base->devindex-702)/676)%26));
}
len += sprintf(gdp->disk_name + len, "%c",
- 'a'+(((device->devindex-26)/26)%26));
+ 'a'+(((base->devindex-26)/26)%26));
}
- len += sprintf(gdp->disk_name + len, "%c", 'a'+(device->devindex%26));
+ len += sprintf(gdp->disk_name + len, "%c", 'a'+(base->devindex%26));
- if (device->features & DASD_FEATURE_READONLY)
+ if (block->base->features & DASD_FEATURE_READONLY)
set_disk_ro(gdp, 1);
- gdp->private_data = device;
- gdp->queue = device->request_queue;
- device->gdp = gdp;
- set_capacity(device->gdp, 0);
- add_disk(device->gdp);
+ gdp->private_data = block;
+ gdp->queue = block->request_queue;
+ block->gdp = gdp;
+ set_capacity(block->gdp, 0);
+ add_disk(block->gdp);
return 0;
}
/*
* Unregister and free gendisk structure for device.
*/
-void
-dasd_gendisk_free(struct dasd_device *device)
+void dasd_gendisk_free(struct dasd_block *block)
{
- if (device->gdp) {
- del_gendisk(device->gdp);
- device->gdp->queue = NULL;
- put_disk(device->gdp);
- device->gdp = NULL;
+ if (block->gdp) {
+ del_gendisk(block->gdp);
+ block->gdp->queue = NULL;
+ put_disk(block->gdp);
+ block->gdp = NULL;
}
}
/*
* Trigger a partition detection.
*/
-int
-dasd_scan_partitions(struct dasd_device * device)
+int dasd_scan_partitions(struct dasd_block *block)
{
struct block_device *bdev;
- bdev = bdget_disk(device->gdp, 0);
+ bdev = bdget_disk(block->gdp, 0);
if (!bdev || blkdev_get(bdev, FMODE_READ, 1) < 0)
return -ENODEV;
/*
@@ -117,7 +116,7 @@ dasd_scan_partitions(struct dasd_device * device)
* is why the assignment to device->bdev is done AFTER
* the BLKRRPART ioctl.
*/
- device->bdev = bdev;
+ block->bdev = bdev;
return 0;
}
@@ -125,8 +124,7 @@ dasd_scan_partitions(struct dasd_device * device)
* Remove all inodes in the system for a device, delete the
* partitions and make device unusable by setting its size to zero.
*/
-void
-dasd_destroy_partitions(struct dasd_device * device)
+void dasd_destroy_partitions(struct dasd_block *block)
{
/* The two structs have 168/176 byte on 31/64 bit. */
struct blkpg_partition bpart;
@@ -137,8 +135,8 @@ dasd_destroy_partitions(struct dasd_device * device)
* Get the bdev pointer from the device structure and clear
* device->bdev to lower the offline open_count limit again.
*/
- bdev = device->bdev;
- device->bdev = NULL;
+ bdev = block->bdev;
+ block->bdev = NULL;
/*
* See fs/partition/check.c:delete_partition
@@ -149,17 +147,16 @@ dasd_destroy_partitions(struct dasd_device * device)
memset(&barg, 0, sizeof(struct blkpg_ioctl_arg));
barg.data = (void __force __user *) &bpart;
barg.op = BLKPG_DEL_PARTITION;
- for (bpart.pno = device->gdp->minors - 1; bpart.pno > 0; bpart.pno--)
+ for (bpart.pno = block->gdp->minors - 1; bpart.pno > 0; bpart.pno--)
ioctl_by_bdev(bdev, BLKPG, (unsigned long) &barg);
- invalidate_partition(device->gdp, 0);
+ invalidate_partition(block->gdp, 0);
/* Matching blkdev_put to the blkdev_get in dasd_scan_partitions. */
blkdev_put(bdev);
- set_capacity(device->gdp, 0);
+ set_capacity(block->gdp, 0);
}
-int
-dasd_gendisk_init(void)
+int dasd_gendisk_init(void)
{
int rc;
@@ -174,8 +171,7 @@ dasd_gendisk_init(void)
return 0;
}
-void
-dasd_gendisk_exit(void)
+void dasd_gendisk_exit(void)
{
unregister_blkdev(DASD_MAJOR, "dasd");
}