diff options
| -rw-r--r-- | mm/slub.c | 42 |
1 files changed, 26 insertions, 16 deletions
diff --git a/mm/slub.c b/mm/slub.c index 7d2a996c307..ed3334d9b6d 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1862,7 +1862,7 @@ static void unfreeze_partials(struct kmem_cache *s) { struct kmem_cache_node *n = NULL; struct kmem_cache_cpu *c = this_cpu_ptr(s->cpu_slab); - struct page *page; + struct page *page, *discard_page = NULL; while ((page = c->partial)) { enum slab_modes { M_PARTIAL, M_FREE }; @@ -1904,7 +1904,8 @@ static void unfreeze_partials(struct kmem_cache *s) if (l == M_PARTIAL) remove_partial(n, page); else - add_partial(n, page, 1); + add_partial(n, page, + DEACTIVATE_TO_TAIL); l = m; } @@ -1915,14 +1916,22 @@ static void unfreeze_partials(struct kmem_cache *s) "unfreezing slab")); if (m == M_FREE) { - stat(s, DEACTIVATE_EMPTY); - discard_slab(s, page); - stat(s, FREE_SLAB); + page->next = discard_page; + discard_page = page; } } if (n) spin_unlock(&n->list_lock); + + while (discard_page) { + page = discard_page; + discard_page = discard_page->next; + + stat(s, DEACTIVATE_EMPTY); + discard_slab(s, page); + stat(s, FREE_SLAB); + } } /* @@ -1969,7 +1978,7 @@ int put_cpu_partial(struct kmem_cache *s, struct page *page, int drain) page->pobjects = pobjects; page->next = oldpage; - } while (this_cpu_cmpxchg(s->cpu_slab->partial, oldpage, page) != oldpage); + } while (irqsafe_cpu_cmpxchg(s->cpu_slab->partial, oldpage, page) != oldpage); stat(s, CPU_PARTIAL_FREE); return pobjects; } @@ -4435,30 +4444,31 @@ static ssize_t show_slab_objects(struct kmem_cache *s, for_each_possible_cpu(cpu) { struct kmem_cache_cpu *c = per_cpu_ptr(s->cpu_slab, cpu); + int node = ACCESS_ONCE(c->node); struct page *page; - if (!c || c->node < 0) + if (node < 0) continue; - - if (c->page) { - if (flags & SO_TOTAL) - x = c->page->objects; + page = ACCESS_ONCE(c->page); + if (page) { + if (flags & SO_TOTAL) + x = page->objects; else if (flags & SO_OBJECTS) - x = c->page->inuse; + x = page->inuse; else x = 1; total += x; - nodes[c->node] += x; + nodes[node] += x; } page = c->partial; if (page) { x = page->pobjects; - total += x; - nodes[c->node] += x; + total += x; + nodes[node] += x; } - per_cpu[c->node]++; + per_cpu[node]++; } } |