On Sat, 2012-07-14 at 15:01 +0300, Pekka Enberg wrote:

I'm not exactly loving that either.

It'd probably be better to reshuffle the code so that the debug checks
end up in separate functions that are no-op for !CONFIG_DEBUG_VM. That
way the _labels_ are used unconditionally although there's no actual
code generated.

I can work on reshuffling the code. Do have a question though. This
following sanity check is currently done only when CONFIG_DEBUG_VM is
defined. However, it does appear to be something that is that should be
checked even in regular path.

struct kmem_cache *kmem_cache_create(const char *name, size_t size,
size_t align,
                unsigned long flags, void (*ctor)(void *))
{
        struct kmem_cache *s = NULL;

#ifdef CONFIG_DEBUG_VM
        if (!name || in_interrupt() || size < sizeof(void *) ||
                size > KMALLOC_MAX_SIZE) {
                printk(KERN_ERR "kmem_cache_create(%s) integrity check"
                        " failed\n", name);
                goto out;
        }
#endif



---

}

Am I reading this right?

Thanks,
-- Shuah

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>