On Fri, 28 Mar 2008 16:45:28 +1100 NeilBrown <neilb@xxxxxxx> wrote:
> +static ssize_t
> +raid5_store_preread_threshold(mddev_t *mddev, const char *page, size_t len)
> +{
> + raid5_conf_t *conf = mddev_to_conf(mddev);
> + char *end;
> + int new;
> + if (len >= PAGE_SIZE)
> + return -EINVAL;
> + if (!conf)
> + return -ENODEV;
> +
> + new = simple_strtoul(page, &end, 10);
> + if (!*page || (*end && *end != '\n'))
> + return -EINVAL;
> + if (new > conf->max_nr_stripes || new < 0)
> + return -EINVAL;
> + conf->bypass_threshold = new;
> + return len;
> +}
checkpatch 0.16 (which I misfiled and have thus far failed to merge up)
sayeth:
WARNING: consider using strict_strtoul in preference to simple_strtoul
#258: FILE: drivers/md/raid5.c:4090:
+ new = simple_strtoul(page, &end, 10);
the reason being that code which uses simple_strtoul() can treat
"42-what-a-todo" as "42", which seems a bit sloppy.
Your code won't have that failing, because it explicitly checks that the
input ended in \0 or \n. But strict_strtoul() internally does that, so this
open-coded test could be removed.
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