Function _dfs_aspace_create

components/dfs/dfs_v2/src/dfs_pcache.c:672–707

* @brief Internal function to create a new address space for page cache * * This function allocates and initializes a new address space structure for page caching. * It sets up all necessary lists, locks, and initial values for the address space. * * @param[in] dentry Directory entry containing mount point and path information (can be NULL) * @param[in] vnode Pointer to the vnode structure

 * @see dfs_aspace_create() for the public interface to create address spaces
 */
static struct dfs_aspace *_dfs_aspace_create(struct dfs_dentry *dentry,
                                             struct dfs_vnode *vnode,
                                             const struct dfs_aspace_ops *ops)
{
    struct dfs_aspace *aspace;

    aspace = rt_calloc(1, sizeof(struct dfs_aspace));
    if (aspace)
    {
        rt_list_init(&aspace->list_active);
        rt_list_init(&aspace->list_inactive);
        rt_list_init(&aspace->list_dirty);
        rt_list_insert_after(&aspace->list_active, &aspace->list_inactive);

        aspace->avl_root.root_node = 0;
        aspace->avl_page = 0;

        rt_mutex_init(&aspace->lock, rt_thread_self()->parent.name, RT_IPC_FLAG_PRIO);
        rt_atomic_store(&aspace->ref_count, 1);

        aspace->pages_count = 0;
        aspace->vnode = vnode;
        aspace->ops = ops;

        if (dentry && dentry->mnt)
        {
            aspace->mnt = dentry->mnt;
            aspace->fullpath = rt_strdup(dentry->mnt->fullpath);
            aspace->pathname = rt_strdup(dentry->pathname);
        }

        dfs_aspace_insert(aspace);
    }

    return aspace;
}

/**
 * @brief Create or lookup an address space for page caching