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Commit 62e346a8 authored by Christoph Lameter's avatar Christoph Lameter Committed by Pekka Enberg
Browse files

slub: extract common code to remove objects from partial list without locking 



There are a couple of places where repeat the same statements when removing
a page from the partial list. Consolidate that into __remove_partial().

Acked-by: default avatarDavid Rientjes <rientjes@google.com>
Signed-off-by: default avatarChristoph Lameter <cl@linux.com>
Signed-off-by: default avatarPekka Enberg <penberg@kernel.org>
parent f7cb1933

mm/slub.c

+11 −8
Original line number Diff line number Diff line
@@ -1310,13 +1310,19 @@ static void add_partial(struct kmem_cache_node *n, 
	spin_unlock(&n->list_lock);

}



static inline void __remove_partial(struct kmem_cache_node *n,

					struct page *page)

{

	list_del(&page->lru);

	n->nr_partial--;

}



static void remove_partial(struct kmem_cache *s, struct page *page)

{

	struct kmem_cache_node *n = get_node(s, page_to_nid(page));



	spin_lock(&n->list_lock);

	list_del(&page->lru);

	n->nr_partial--;

	__remove_partial(n, page);

	spin_unlock(&n->list_lock);

}
@@ -1329,8 +1335,7 @@ static inline int lock_and_freeze_slab(struct kmem_cache_node *n, 
							struct page *page)

{

	if (slab_trylock(page)) {

		list_del(&page->lru);

		n->nr_partial--;

		__remove_partial(n, page);

		__SetPageSlubFrozen(page);

		return 1;

	}
@@ -2462,9 +2467,8 @@ static void free_partial(struct kmem_cache *s, struct kmem_cache_node *n) 
	spin_lock_irqsave(&n->list_lock, flags);

	list_for_each_entry_safe(page, h, &n->partial, lru) {

		if (!page->inuse) {

			list_del(&page->lru);

			__remove_partial(n, page);

			discard_slab(s, page);

			n->nr_partial--;

		} else {

			list_slab_objects(s, page,

				"Objects remaining on kmem_cache_close()");
@@ -2822,8 +2826,7 @@ int kmem_cache_shrink(struct kmem_cache *s) 
				 * may have freed the last object and be

				 * waiting to release the slab.

				 */

				list_del(&page->lru);

				n->nr_partial--;

				__remove_partial(n, page);

				slab_unlock(page);

				discard_slab(s, page);

			} else {