linux-kernel - Re: [PATCH] : Convert simple_strtoul to strict

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Message-ID: <ea11fea30903301942w2e6d8555k2dcbb36829778b4f@mail.gmail.com>
Date:	Tue, 31 Mar 2009 08:12:58 +0530
From:	Manish Katiyar <mkatiyar@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	trivial@...nel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] : Convert simple_strtoul to strict_strtoul in fs/inode.c

On Tue, Mar 31, 2009 at 5:05 AM, Andrew Morton
<akpm@...ux-foundation.org> wrote:
> On Mon, 23 Mar 2009 09:02:04 +0530
> Manish Katiyar <mkatiyar@...il.com> wrote:
>
>> Hi Andrew,
>>
>> Below patch converts simple_strtoul to strict_strtoul in fs/inode.c
>>
>> Signed-off-by: Manish Katiyar <mkatiyar@...il.com>
>> ---
>>  fs/inode.c |    8 +++++++-
>>  1 files changed, 7 insertions(+), 1 deletions(-)
>>
>> diff --git a/fs/inode.c b/fs/inode.c
>> index e0dad15..ef4a9b1 100644
>> --- a/fs/inode.c
>> +++ b/fs/inode.c
>> @@ -1447,9 +1447,15 @@ EXPORT_SYMBOL(inode_double_unlock);
>>  static __initdata unsigned long ihash_entries;
>>  static int __init set_ihash_entries(char *str)
>>  {
>> +     int ret;
>> +
>>       if (!str)
>>               return 0;
>> -     ihash_entries = simple_strtoul(str, &str, 0);
>> +
>> +     ret = strict_strtoul(str, 0, &ihash_entries);
>> +     if (ret < 0 || ihash_entries == 0)
>> +             return 0;
>> +
>>       return 1;
>>  }
>>  __setup("ihash_entries=", set_ihash_entries);
>
> Again, there is no reason given for making the change.

Hi Andrew,

It showed up during cleanup of this file via checkpatch.pl.

>
> Bear in mind that this is not a backward-compatible change!  If someone
> (stupidly) has
>
>        ihash_entries=42foo
>
> in their grub.conf then your change would break their kernels.
>
> it's not a serious problem and we can probably make this change, but
> trivial@...nel.org is not a suitable list for discussing and
> promulgating the change.

I have cced lkml.

Thanks -
Manish
>
>
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