Re: unused swap offset / bad page map.

From: Dave Jones
Date: Wed Aug 07 2013 - 11:54:32 EST



void __lru_cache_add(struct page *page)
{
struct pagevec *pvec = &get_cpu_var(lru_add_pvec);

page_cache_get(page);
if (!pagevec_space(pvec))
__pagevec_lru_add(pvec);
pagevec_add(pvec, page);
put_cpu_var(lru_add_pvec);
}

I added a printk, and found that pagevec_add frequently returns 0. Is that ok ?

What happens to 'page' in this case ?

Dave

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