page_zonenum

Name:page_zonenum

Proto:static inline enum zone_type page_zonenum(const struct page *page)

Type:enum zone_type

Parameter:

Type	Parameter	Name
const struct page *	page

937

Return Atomic flags, some possibly * updated asynchronously >> ZONES_PGSHIFT & ZONES_MASK

**Caller**
Name	Describe
isolate_lru_pages	pgdat->lru_lock is heavily contended. Some of the functions that* shrink the lists perform better by taking out a batch of pages* and working on them outside the LRU lock.* For pagecache intensive workloads, this function is the hottest
move_pages_to_lru	This moves pages from @list to corresponding LRU list.* We move them the other way if the page is referenced by one or more* processes, from rmap.* If the pages are mostly unmapped, the processing is fast and it is
rmqueue_pcplist	Lock and remove page from the per-cpu list
rmqueue	Allocate a page from the given zone. Use pcplists for order-0 allocations.

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