Commit 14421453 authored Apr 02, 2010 by Anton Blanchard Committed by Jens Axboe Apr 02, 2010

backing-dev: Handle class_create() failure



I hit this when we had a bug in IDR for a few days. Basically sysfs would
fail to create new inodes since it uses an IDR and therefore class_create would
fail.

While we are unlikely to see this fail we may as well handle it instead of
oopsing.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

parent a506aedc

mm/backing-dev.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -227,6 +227,9 @@ static struct device_attribute bdi_dev_attrs[] = {
		static __init int bdi_class_init(void)
		{
		bdi_class = class_create(THIS_MODULE, "bdi");
		if (IS_ERR(bdi_class))
		return PTR_ERR(bdi_class);

		bdi_class->dev_attrs = bdi_dev_attrs;
		bdi_debug_init();
		return 0;