>>> +
>>> + if (ctor->lock_pages + count > lock_limit && npages) {
>>> + printk(KERN_INFO "exceed the locked memory rlimit.");
>>> + return NULL;
>>> + }
>>> +
>>> + info = kmem_cache_zalloc(ext_page_info_cache, GFP_KERNEL);
>>
>>You seem to fill in all memory, why zalloc? this is data path ...
>
>Ok, Let me check this.
It's mainly for info->next and info->prev, these two fields will be used in
hash functions.
But you are right, since most fields will be refilled. The new version includes
the fix.
Thanks
Xiaohui
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