Re: [PATCH] ext4: cleanup sbi->s_kobj after quota initialization failure

[Jeff Mahoney <jeffm@suse.com>]

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On 2/25/13 8:14 PM, Aditya Kali wrote:
> This seems to have been fixed in the ext4 master branch by commit 
> http://git.kernel.org/?p=linux/kernel/git/tytso/ext4.git;a=commitdiff;h=72ba74508b2857e71d65fc93f0d6b684492fc740

Yep.
> 
You're right. It's been a while since I worked with sysfs code
and I was still expecting the old kobject refcounting semantics. I
suppose it would follow that the completion stuff in ext4_put_super is
unnecessary now as well.

- -Jeff

> On Mon, Feb 25, 2013 at 3:32 PM, Jan Kara <jack@suse.cz> wrote:
>> On Mon 25-02-13 15:55:23, Jeff Mahoney wrote:
>>> If ext4_enable_quotas fails, it jumps to failed_mount7, which 
>>> doesn't tear down the kobj.
>> The patch looks good. You can add: Reviewed-by: Jan Kara 
>> <jack@suse.cz>
>> 
>> Honza
>> 
>>> Cc: Aditya Kali <adityakali@google.com> Cc: Jan Kara 
>>> <jack@suse.cz> Signed-off-by: Jeff Mahoney <jeffm@suse.com>
>>> --- fs/ext4/super.c |    6 +++++- 1 file changed, 5
>>> insertions(+), 1 deletion(-)
>>> 
>>> --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3794,7 +3794,7
>>>  @@ no_journal: !(sb->s_flags & MS_RDONLY)) { err = 
>>> ext4_enable_quotas(sb); if (err) -                     goto 
>>> failed_mount7; +                     goto failed_mount8; } 
>>> #endif  /* CONFIG_QUOTA */
>>> 
>>> @@ -3813,6 +3813,10 @@ cantfind_ext4: ext4_msg(sb, KERN_ERR, 
>>> "VFS: Can't find ext4 filesystem"); goto failed_mount;
>>> 
>>> +failed_mount8: +     kobject_del(&sbi->s_kobj); + 
>>> kobject_put(&sbi->s_kobj); + 
>>> wait_for_completion(&sbi->s_kobj_unregister); failed_mount7: 
>>> ext4_unregister_li_request(sb); failed_mount6:
>>> 
>>> -- Jeff Mahoney SUSE Labs -- To unsubscribe from this list: 
>>> send the line "unsubscribe linux-ext4" in the body of a message
>>> to majordomo@vger.kernel.org More majordomo info at 
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>> -- Jan Kara <jack@suse.cz> SUSE Labs, CR
> 
> 
> 
> --
> 
> Aditya
> 


- -- 
Jeff Mahoney
SUSE Labs
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