Re: C++ pushback

Nikita Danilov
2006-04-25T09:14:27Z

J.A. Magallon writes:

[...]

>
> Tell me what is the difference between:
>
>
> sbi = kmalloc(sizeof(*sbi), GFP_KERNEL);
> if (!sbi)
> return -ENOMEM;
> sb->s_fs_info = sbi;
> memset(sbi, 0, sizeof(*sbi));
> sbi->s_mount_opt = 0;
> sbi->s_resuid = EXT3_DEF_RESUID;
> sbi->s_resgid = EXT3_DEF_RESGID;
>
> and
>
> SuperBlock() : s_mount_opt(0), s_resuid(EXT3_DEF_RESUID), s_resgid(EXT3_DEF_RESGID)
> {}
>
> ...
> sbi = new SuperBlock;
> if (!sbi)
> return -ENOMEM;
>
> apart that you don't get members initalized twice and get a shorter code :).

The difference is that second fragment doesn't mention GFP_KERNEL, so
it's most likely wrong. Moreover it's shorter only because it places
multiple initializations on the same like, hence, contradicting
CodingStyle.

>
> --
> J.A. Magallon <jamagallon()able!es> \ Software is like sex:

Nikita.