Re: [EXT4 set 6][PATCH 1/1]Export jbd stats through procfs

From: Alexey Dobriyan
Date: Wed Jul 11 2007 - 00:38:35 EST


On Tue, Jul 10, 2007 at 11:21:49PM -0400, Cédric Augonnet wrote:
> 2007/7/10, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>:
>
> Hi all,
>
> >> + size = sizeof(struct transaction_stats_s);
> >> + s->stats = kmalloc(size, GFP_KERNEL);
> >> + if (s == NULL) {
^
> >> + kfree(s);
> >> + return -EIO;
> >
> >ENOMEM

That, and

if (s->stats == NULL)
kfree(s);

> I'm sorry if i missed some point, but i just don't see the use of such
> a kfree here, not sure Andrew meant you should only return ENOMEM
> instead, but why issuing those kfree(NULL), instead of just a if (!s)
> return ENOMEM ?

kfree() is correct, check isn't.

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