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yaml
---
r: 167716
b: refs/heads/master
c: 3225bea
h: refs/heads/master
v: v3
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Rusty Russell committed Oct 22, 2009
1 parent f43e23a commit d239b3e
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Showing 3 changed files with 4 additions and 39 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: e95646c3ec33c8ec0693992da4332a6b32eb7e31
refs/heads/master: 3225beaba05d4f06087593f5e903ce867b6e118a
37 changes: 3 additions & 34 deletions trunk/drivers/block/virtio_blk.c
Original file line number Diff line number Diff line change
Expand Up @@ -182,34 +182,6 @@ static void do_virtblk_request(struct request_queue *q)
vblk->vq->vq_ops->kick(vblk->vq);
}

/* return ATA identify data
*/
static int virtblk_identify(struct gendisk *disk, void *argp)
{
struct virtio_blk *vblk = disk->private_data;
void *opaque;
int err = -ENOMEM;

opaque = kmalloc(VIRTIO_BLK_ID_BYTES, GFP_KERNEL);
if (!opaque)
goto out;

err = virtio_config_buf(vblk->vdev, VIRTIO_BLK_F_IDENTIFY,
offsetof(struct virtio_blk_config, identify), opaque,
VIRTIO_BLK_ID_BYTES);

if (err)
goto out_kfree;

if (copy_to_user(argp, opaque, VIRTIO_BLK_ID_BYTES))
err = -EFAULT;

out_kfree:
kfree(opaque);
out:
return err;
}

static void virtblk_prepare_flush(struct request_queue *q, struct request *req)
{
req->cmd_type = REQ_TYPE_LINUX_BLOCK;
Expand All @@ -221,18 +193,15 @@ static int virtblk_ioctl(struct block_device *bdev, fmode_t mode,
{
struct gendisk *disk = bdev->bd_disk;
struct virtio_blk *vblk = disk->private_data;
void __user *argp = (void __user *)data;

if (cmd == HDIO_GET_IDENTITY)
return virtblk_identify(disk, argp);

/*
* Only allow the generic SCSI ioctls if the host can support it.
*/
if (!virtio_has_feature(vblk->vdev, VIRTIO_BLK_F_SCSI))
return -ENOTTY;

return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp);
return scsi_cmd_ioctl(disk->queue, disk, mode, cmd,
(void __user *)data);
}

/* We provide getgeo only to please some old bootloader/partitioning tools */
Expand Down Expand Up @@ -443,7 +412,7 @@ static struct virtio_device_id id_table[] = {
static unsigned int features[] = {
VIRTIO_BLK_F_BARRIER, VIRTIO_BLK_F_SEG_MAX, VIRTIO_BLK_F_SIZE_MAX,
VIRTIO_BLK_F_GEOMETRY, VIRTIO_BLK_F_RO, VIRTIO_BLK_F_BLK_SIZE,
VIRTIO_BLK_F_SCSI, VIRTIO_BLK_F_IDENTIFY, VIRTIO_BLK_F_FLUSH
VIRTIO_BLK_F_SCSI, VIRTIO_BLK_F_FLUSH
};

/*
Expand Down
4 changes: 0 additions & 4 deletions trunk/include/linux/virtio_blk.h
Original file line number Diff line number Diff line change
Expand Up @@ -14,11 +14,8 @@
#define VIRTIO_BLK_F_RO 5 /* Disk is read-only */
#define VIRTIO_BLK_F_BLK_SIZE 6 /* Block size of disk is available*/
#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */
#define VIRTIO_BLK_F_IDENTIFY 8 /* ATA IDENTIFY supported */
#define VIRTIO_BLK_F_FLUSH 9 /* Cache flush command support */

#define VIRTIO_BLK_ID_BYTES (sizeof(__u16[256])) /* IDENTIFY DATA */

struct virtio_blk_config {
/* The capacity (in 512-byte sectors). */
__u64 capacity;
Expand All @@ -34,7 +31,6 @@ struct virtio_blk_config {
} geometry;
/* block size of device (if VIRTIO_BLK_F_BLK_SIZE) */
__u32 blk_size;
__u8 identify[VIRTIO_BLK_ID_BYTES];
} __attribute__((packed));

/*
Expand Down

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