Gitweb: http://git.kernel.org/linus/144214537370b4f133a735446ebe86e90cfb2501
Commit: 144214537370b4f133a735446ebe86e90cfb2501
Parent: a506aedc51093544ff0f9610af6066d18cb6abbe
Author: Anton Blanchard <anton@samba.org>
AuthorDate: Fri Apr 2 09:46:55 2010 +0200
Committer: Jens Axboe <jens.axboe@oracle.com>
CommitDate: Fri Apr 2 09:46:55 2010 +0200
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>
---
mm/backing-dev.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 0e8ca03..f13e067 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -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;
--
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