linux-kernel - Re: [PATCH v2 4/7] KEYS: split call to call_usermodehelper

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Date:	Sat, 9 Mar 2013 20:55:37 -0300
From:	Lucas De Marchi <lucas.demarchi@...fusion.mobi>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	lucas.de.marchi@...il.com, David Howells <dhowells@...hat.com>,
	James Morris <james.l.morris@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/7] KEYS: split call to call_usermodehelper_fns()

On Sat, Mar 9, 2013 at 5:25 PM, Oleg Nesterov <oleg@...hat.com> wrote:
> On 03/08, Lucas De Marchi wrote:
>>
>>  static int call_usermodehelper_keys(char *path, char **argv, char **envp,
>>                                       struct key *session_keyring, int wait)
>>  {
>> -     return call_usermodehelper_fns(path, argv, envp, wait,
>> -                                    umh_keys_init, umh_keys_cleanup,
>> -                                    key_get(session_keyring));
>> +     struct subprocess_info *info;
>> +
>> +     info = call_usermodehelper_setup(path, argv, envp, GFP_KERNEL,
>> +                                       umh_keys_init, umh_keys_cleanup,
>> +                                       key_get(session_keyring));
>> +     if (!info) {
>> +             key_put(session_keyring);
>> +             return -ENOMEM;
>> +     }
>> +
>> +     return call_usermodehelper_exec(info, wait);
>
> Looks correct, but can't we simpluify it a bit?
>
>         info = call_usermodehelper_setup(session_keyring);
>         if (!info)
>                 return ENOMEM;
>
>         key_get(session_keyring));
>         return call_usermodehelper_exec(info);

Yep, looks better this way.

Lucas De Marchi
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