Commit 0cf40a3e authored Mar 15, 2013 by K. Y. Srinivasan Committed by Greg Kroah-Hartman Mar 15, 2013

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

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>

parent c51af826

drivers/hv/hv_balloon.c

+0 −7

Original line number	Diff line number	Diff line
		@@ -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);

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