On (22/10/27 11:27), Nhat Pham wrote:
[..]
> +static int zs_reclaim_page(struct zs_pool *pool, unsigned int retries)
> +{
> + int i, obj_idx, ret = 0;
> + unsigned long handle;
> + struct zspage *zspage;
> + struct page *page;
> + enum fullness_group fullness;
> +
> + /* Lock LRU and fullness list */
> + spin_lock(&pool->lock);
> + if (!pool->ops || !pool->ops->evict || list_empty(&pool->lru) ||
> + retries == 0) {
> + spin_unlock(&pool->lock);
> + return -EINVAL;
> + }
> +
> + for (i = 0; i < retries; i++) {
> + struct size_class *class;
> +
> + zspage = list_last_entry(&pool->lru, struct zspage, lru);
> + list_del(&zspage->lru);
> +
> + /* zs_free may free objects, but not the zspage and handles */
> + zspage->under_reclaim = true;
> +
> + /* Lock backing pages into place */
> + lock_zspage(zspage);
Does this call into the scheduler under pool->lock spinlock?
