Linus,
You just mentioned using nbd but nbd doesn't even compile at the moment
(and it hasn't for a while). Below is a patch that fixes compilation.
Note patch compiles but is otherwise untested as no kernel after 2.5.7
boots on my 2.5 box due to IDE hanging the box hard during device
discovery. )-:
Best regards,
Anton
--
Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @)
Linux NTFS maintainer / WWW: http://linux-ntfs.sf.net/
IRC: #ntfs on irc.openprojects.net / ICQ: 8561279
WWW: http://www-stu.christs.cam.ac.uk/~aia21/
--- nbd-2.5.patch ---
--- nbd.c.old Tue Apr 16 16:58:42 2002
+++ nbd.c Thu Apr 11 00:13:33 2002
@@ -240,11 +240,11 @@ void nbd_do_it(struct nbd_device *lo)
{
struct request *req;
- down (&lo->queue_lock);
+ down (&lo->tx_lock);
while (1) {
- up (&lo->queue_lock);
+ up (&lo->tx_lock);
req = nbd_read_stat(lo);
- down (&lo->queue_lock);
+ down (&lo->tx_lock);
if (!req) {
printk(KERN_ALERT "req should never be null\n" );
@@ -264,14 +264,14 @@ void nbd_do_it(struct nbd_device *lo)
}
#endif
blkdev_dequeue_request(req);
- up (&lo->queue_lock);
+ up (&lo->tx_lock);
nbd_end_request(req);
- down (&lo->queue_lock);
+ down (&lo->tx_lock);
}
out:
- up (&lo->queue_lock);
+ up (&lo->tx_lock);
}
void nbd_clear_que(struct nbd_device *lo)
@@ -299,11 +299,11 @@ void nbd_clear_que(struct nbd_device *lo
#endif
req->errors++;
blkdev_dequeue_request(req);
- up(&lo->queue_lock);
+ up(&lo->tx_lock);
nbd_end_request(req);
- down(&lo->queue_lock);
+ down(&lo->tx_lock);
}
}
@@ -351,10 +351,10 @@ static void do_nbd_request(request_queue
blkdev_dequeue_request(req);
spin_unlock_irq(q->queue_lock);
- down (&lo->queue_lock);
+ down (&lo->tx_lock);
list_add(&req->queuelist, &lo->queue_head);
nbd_send_req(lo->sock, req); /* Why does this block? */
- up (&lo->queue_lock);
+ up (&lo->tx_lock);
spin_lock_irq(q->queue_lock);
continue;
@@ -396,14 +396,14 @@ static int nbd_ioctl(struct inode *inode
return 0 ;
case NBD_CLEAR_SOCK:
- down(&lo->queue_lock);
+ down(&lo->tx_lock);
nbd_clear_que(lo);
if (!list_empty(&lo->queue_head)) {
- up(&lo->queue_lock);
+ up(&lo->tx_lock);
printk(KERN_ERR "nbd: Some requests are in progress -> can not turn off.\n");
return -EBUSY;
}
- up(&lo->queue_lock);
+ up(&lo->tx_lock);
file = lo->file;
if (!file)
return -EINVAL;
@@ -527,7 +527,7 @@ static int __init nbd_init(void)
nbd_dev[i].magic = LO_MAGIC;
nbd_dev[i].flags = 0;
INIT_LIST_HEAD(&nbd_dev[i].queue_head);
- init_MUTEX(&nbd_dev[i].queue_lock);
+ init_MUTEX(&nbd_dev[i].tx_lock);
nbd_blksizes[i] = 1024;
nbd_blksize_bits[i] = 10;
nbd_bytesizes[i] = 0x7ffffc00; /* 2GB */