diff options
| author | Kay Sievers <kay.sievers@vrfy.org> | 2007-05-21 22:08:01 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-01-24 20:40:36 -0800 |
| commit | edfaa7c36574f1bf09c65ad602412db9da5f96bf (patch) | |
| tree | d591b80ff9229e4845e41d68e2f4c5aadb017027 /drivers/block/nbd.c | |
| parent | 09f82ea92822a7bbb7e816508abbda47ed54a77f (diff) | |
| download | lwn-edfaa7c36574f1bf09c65ad602412db9da5f96bf.tar.gz lwn-edfaa7c36574f1bf09c65ad602412db9da5f96bf.zip | |
Driver core: convert block from raw kobjects to core devices
This moves the block devices to /sys/class/block. It will create a
flat list of all block devices, with the disks and partitions in one
directory. For compatibility /sys/block is created and contains symlinks
to the disks.
/sys/class/block
|-- sda -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda
|-- sda1 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda1
|-- sda10 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda10
|-- sda5 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda5
|-- sda6 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda6
|-- sda7 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda7
|-- sda8 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda8
|-- sda9 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda9
`-- sr0 -> ../../devices/pci0000:00/0000:00:1f.2/host1/target1:0:0/1:0:0:0/block/sr0
/sys/block/
|-- sda -> ../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda
`-- sr0 -> ../devices/pci0000:00/0000:00:1f.2/host1/target1:0:0/1:0:0:0/block/sr0
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/block/nbd.c')
| -rw-r--r-- | drivers/block/nbd.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index b4c0888aedc3..ba9b17e507e0 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -375,14 +375,17 @@ harderror: return NULL; } -static ssize_t pid_show(struct gendisk *disk, char *page) +static ssize_t pid_show(struct device *dev, + struct device_attribute *attr, char *buf) { - return sprintf(page, "%ld\n", + struct gendisk *disk = dev_to_disk(dev); + + return sprintf(buf, "%ld\n", (long) ((struct nbd_device *)disk->private_data)->pid); } -static struct disk_attribute pid_attr = { - .attr = { .name = "pid", .mode = S_IRUGO }, +static struct device_attribute pid_attr = { + .attr = { .name = "pid", .mode = S_IRUGO, .owner = THIS_MODULE }, .show = pid_show, }; @@ -394,7 +397,7 @@ static int nbd_do_it(struct nbd_device *lo) BUG_ON(lo->magic != LO_MAGIC); lo->pid = current->pid; - ret = sysfs_create_file(&lo->disk->kobj, &pid_attr.attr); + ret = sysfs_create_file(&lo->disk->dev.kobj, &pid_attr.attr); if (ret) { printk(KERN_ERR "nbd: sysfs_create_file failed!"); return ret; @@ -403,7 +406,7 @@ static int nbd_do_it(struct nbd_device *lo) while ((req = nbd_read_stat(lo)) != NULL) nbd_end_request(req); - sysfs_remove_file(&lo->disk->kobj, &pid_attr.attr); + sysfs_remove_file(&lo->disk->dev.kobj, &pid_attr.attr); return 0; } |