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Drivers: hv: balloon: Make the balloon driver not unloadable

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The balloon driver is stateful. For instance, it needs to keep track of pages
that have been ballooned out to properly post pressure reports. This state cannot
be re-constructed if the driver were to be unloaded and subsequently loaded.
Furthermore, as we support memory hot-add as part of this driver, this driver becomes
even more stateful and this state cannot be re-created. Make the balloon driver
unloadable to deal with this issue.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
K. Y. Srinivasan 2013-03-15 12:25:42 -07:00 committed by Greg Kroah-Hartman
parent c51af826cf
commit 0cf40a3e66
1 changed files with 0 additions and 7 deletions
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7
drivers/hv/hv_balloon.c
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@ -1096,14 +1096,7 @@ static int __init init_balloon_drv(void)
return vmbus_driver_register(&balloon_drv);
}
static void exit_balloon_drv(void)
{
vmbus_driver_unregister(&balloon_drv);
}
module_init(init_balloon_drv);
module_exit(exit_balloon_drv);
MODULE_DESCRIPTION("Hyper-V Balloon");
MODULE_VERSION(HV_DRV_VERSION);