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head/sys/vm/vm_pageout.c
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| /* | /* | ||||
| * Add a small number of queued pages to a batch queue for later processing | * Add a small number of queued pages to a batch queue for later processing | ||||
| * without the corresponding queue lock held. The caller must have enqueued a | * without the corresponding queue lock held. The caller must have enqueued a | ||||
| * marker page at the desired start point for the scan. Pages will be | * marker page at the desired start point for the scan. Pages will be | ||||
| * physically dequeued if the caller so requests. Otherwise, the returned | * physically dequeued if the caller so requests. Otherwise, the returned | ||||
| * batch may contain marker pages, and it is up to the caller to handle them. | * batch may contain marker pages, and it is up to the caller to handle them. | ||||
| * | * | ||||
| * When processing the batch queue, vm_page_queue() must be used to | * When processing the batch queue, vm_pageout_defer() must be used to | ||||
| * determine whether the page has been logically dequeued by another thread. | * determine whether the page has been logically dequeued since the batch was | ||||
| * Once this check is performed, the page lock guarantees that the page will | * collected. | ||||
| * not be disassociated from the queue. | |||||
| */ | */ | ||||
| static __always_inline void | static __always_inline void | ||||
| vm_pageout_collect_batch(struct scan_state *ss, const bool dequeue) | vm_pageout_collect_batch(struct scan_state *ss, const bool dequeue) | ||||
| { | { | ||||
| struct vm_pagequeue *pq; | struct vm_pagequeue *pq; | ||||
| vm_page_t m, marker, n; | vm_page_t m, marker, n; | ||||
| marker = ss->marker; | marker = ss->marker; | ||||
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