Messages in this thread Patch in this message | | | From | Vitaly Kuznetsov <> | Subject | [PATCH RESEND 1/3] driver core: export lock_device_hotplug/unlock_device_hotplug | Date | Thu, 12 Feb 2015 11:23:52 +0100 |
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add_memory() is supposed to be run with device_hotplug_lock grabbed, otherwise it can race with e.g. device_online(). Allow external modules (hv_balloon for now) to lock device hotplug.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> --- drivers/base/core.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/base/core.c b/drivers/base/core.c index 97e2baf..b3073af 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -55,11 +55,13 @@ void lock_device_hotplug(void) { mutex_lock(&device_hotplug_lock); } +EXPORT_SYMBOL_GPL(lock_device_hotplug); void unlock_device_hotplug(void) { mutex_unlock(&device_hotplug_lock); } +EXPORT_SYMBOL_GPL(unlock_device_hotplug); int lock_device_hotplug_sysfs(void) { -- 1.9.3
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