return -EINVAL;
/* In case the discard request is in a partition */
- if (bdev->bd_partno)
+ if (bdev_is_partition(bdev))
part_offset = bdev->bd_part->start_sect;
while (nr_sects) {
return -EACCES;
if (copy_from_user(&p, upart, sizeof(struct blkpg_partition)))
return -EFAULT;
- if (bdev != bdev->bd_contains)
+ if (bdev_is_partition(bdev))
return -EINVAL;
if (p.pno <= 0)
{
int ret;
- if (!disk_part_scan_enabled(bdev->bd_disk) || bdev != bdev->bd_contains)
+ if (!disk_part_scan_enabled(bdev->bd_disk) || bdev_is_partition(bdev))
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
int scsi_verify_blk_ioctl(struct block_device *bd, unsigned int cmd)
{
- if (bd && bd == bd->bd_contains)
+ if (bd && !bdev_is_partition(bd))
return 0;
if (capable(CAP_SYS_RAWIO))
return err >= 0 ? put_user_long(err, arg) : err;
set_val:
- if (bdev != bdev->bd_contains)
+ if (bdev_is_partition(bdev))
err = -EINVAL;
else {
if (!capable(CAP_SYS_ADMIN))
switch (cmd) {
case HDIO_OBSOLETE_IDENTITY:
case HDIO_GET_IDENTITY:
- if (bdev != bdev->bd_contains)
+ if (bdev_is_partition(bdev))
return -EINVAL;
return ide_get_identity_ioctl(drive, cmd, argp);
case HDIO_GET_NICE:
struct request_queue *q = bdev_get_queue(bdev);
/* request-based cannot stack on partitions! */
- if (bdev != bdev->bd_contains)
+ if (bdev_is_partition(bdev))
return false;
return queue_is_mq(q);
* whole block device, not on a partition. This prevents overspray
* between sibling partitions.
*/
- if ((!capable(CAP_SYS_RAWIO)) || (bdev != bdev->bd_contains))
+ if (!capable(CAP_SYS_RAWIO) || bdev_is_partition(bdev))
return -EPERM;
return 0;
}
dasd_put_device(base);
return -EFAULT;
}
- if (bdev != bdev->bd_contains) {
+ if (bdev_is_partition(bdev)) {
pr_warn("%s: The specified DASD is a partition and cannot be formatted\n",
dev_name(&base->cdev->dev));
dasd_put_device(base);
base = dasd_device_from_gendisk(bdev->bd_disk);
if (!base)
return -ENODEV;
- if (bdev != bdev->bd_contains) {
+ if (bdev_is_partition(bdev)) {
pr_warn("%s: The specified DASD is a partition and cannot be checked\n",
dev_name(&base->cdev->dev));
rc = -EINVAL;
rc = -EROFS;
goto out_err;
}
- if (bdev != bdev->bd_contains) {
+ if (bdev_is_partition(bdev)) {
pr_warn("%s: The specified DASD is a partition and tracks cannot be released\n",
dev_name(&base->cdev->dev));
rc = -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
- if (bdev != bdev->bd_contains)
+ if (bdev_is_partition(bdev))
// ro setting is not allowed for partitions
return -EINVAL;
if (get_user(intval, (int __user *)argp))
struct nfs4_client *clp,
struct nfsd4_getdeviceinfo *gdp)
{
- if (sb->s_bdev != sb->s_bdev->bd_contains)
+ if (bdev_is_partition(sb->s_bdev))
return nfserr_inval;
return nfserrno(nfsd4_block_get_device_info_simple(sb, gdp));
}
struct nfs4_client *clp,
struct nfsd4_getdeviceinfo *gdp)
{
- if (sb->s_bdev != sb->s_bdev->bd_contains)
+ if (bdev_is_partition(sb->s_bdev))
return nfserr_inval;
return nfserrno(nfsd4_block_get_device_info_scsi(sb, clp, gdp));
}
extern int blk_verify_command(unsigned char *cmd, fmode_t mode);
+static inline bool bdev_is_partition(struct block_device *bdev)
+{
+ return bdev->bd_partno;
+}
+
enum blk_default_limits {
BLK_MAX_SEGMENTS = 128,
BLK_SAFE_MAX_SECTORS = 255,
if (q->limits.misaligned)
return -1;
- if (bdev != bdev->bd_contains)
+ if (bdev_is_partition(bdev))
return queue_limit_alignment_offset(&q->limits,
bdev->bd_part->start_sect);
return q->limits.alignment_offset;
{
struct request_queue *q = bdev_get_queue(bdev);
- if (bdev != bdev->bd_contains)
+ if (bdev_is_partition(bdev))
return queue_limit_discard_alignment(&q->limits,
bdev->bd_part->start_sect);
return q->limits.discard_alignment;
* and scsi-generic block devices we create a temporary new debugfs
* directory that will be removed once the trace ends.
*/
- if (bdev && bdev == bdev->bd_contains)
+ if (bdev && !bdev_is_partition(bdev))
dir = q->debugfs_dir;
else
bt->dir = dir = debugfs_create_dir(buts->name, blk_debugfs_root);