From 599870b175987008b5f5c82a70b89f751e12822e Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Wed, 23 Apr 2008 12:36:52 -0700 Subject: [PATCH] slub: free_list() cleanup free_list looked a bit screwy so here is an attempt to clean it up. free_list is is only used for freeing partial lists. We do not need to return a parameter if we decrement nr_partial within the function which allows a simplification of the whole thing. The current version modifies nr_partial outside of the list_lock which is technically not correct. It was only ok because we should be the only user of this slab cache at this point. Signed-off-by: Christoph Lameter Signed-off-by: Pekka Enberg --- mm/slub.c | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-) diff --git a/mm/slub.c b/mm/slub.c index 378d3f1b548f..c937233127e2 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -2372,25 +2372,21 @@ const char *kmem_cache_name(struct kmem_cache *s) EXPORT_SYMBOL(kmem_cache_name); /* - * Attempt to free all slabs on a node. Return the number of slabs we - * were unable to free. + * Attempt to free all partial slabs on a node. */ -static int free_list(struct kmem_cache *s, struct kmem_cache_node *n, - struct list_head *list) +static void free_partial(struct kmem_cache *s, struct kmem_cache_node *n) { - int slabs_inuse = 0; unsigned long flags; struct page *page, *h; spin_lock_irqsave(&n->list_lock, flags); - list_for_each_entry_safe(page, h, list, lru) + list_for_each_entry_safe(page, h, &n->partial, lru) if (!page->inuse) { list_del(&page->lru); discard_slab(s, page); - } else - slabs_inuse++; + n->nr_partial--; + } spin_unlock_irqrestore(&n->list_lock, flags); - return slabs_inuse; } /* @@ -2407,8 +2403,8 @@ static inline int kmem_cache_close(struct kmem_cache *s) for_each_node_state(node, N_NORMAL_MEMORY) { struct kmem_cache_node *n = get_node(s, node); - n->nr_partial -= free_list(s, n, &n->partial); - if (slabs_node(s, node)) + free_partial(s, n); + if (n->nr_partial || slabs_node(s, node)) return 1; } free_kmem_cache_nodes(s); -- 2.30.2