page_alloc.c:121! error more information

[User &]

I did some changes in page_alloc.c

crit_free(struct page *page,unsigned int order)
{
 zone_t *zone;
 unsigned long free,low;
 
 zone = page_zone(page);
 free = zone->free_pages;
 low = zone->pages_low;

 if((free = low)) 
 __free_pages(page,order)
 
 return page;
}

I called this in onde part of page_alloc.c and during boot i received that 
error.

What can be wrong ?
Thanks
Breno

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