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 <[email protected]> Reviewed-by: Haiyang Zhang <[email protected]> --- drivers/hv/hv_balloon.c | 7 ------- 1 files changed, 0 insertions(+), 7 deletions(-) diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c index 13fda38..4743db9 100644 --- a/drivers/hv/hv_balloon.c +++ b/drivers/hv/hv_balloon.c @@ -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); -- 1.7.4.1 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
