Function dfs_aspace_create

components/dfs/dfs_v2/src/dfs_pcache.c:722–746

* @brief Create or lookup an address space for page caching * * This function either creates a new address space or looks up an existing one * in the page cache hash table. If found, it updates the vnode reference and * activates the address space. * * @param[in] dentry Directory entry containing mount point and path info (can be NULL) * @param[in] vnode Pointer to the vnode structure to a

 * @return Pointer to the found/created address space on success, NULL on failure
 */
struct dfs_aspace *dfs_aspace_create(struct dfs_dentry *dentry,
                                     struct dfs_vnode *vnode,
                                     const struct dfs_aspace_ops *ops)
{
    struct dfs_aspace *aspace = RT_NULL;

    RT_ASSERT(vnode && ops);
    dfs_pcache_lock();
    if (dentry)
    {
        aspace = dfs_aspace_hash_lookup(dentry, ops);
    }

    if (!aspace)
    {
        aspace = _dfs_aspace_create(dentry, vnode, ops);
    }
    else
    {
        aspace->vnode = vnode;
        dfs_aspace_active(aspace);
    }
    dfs_pcache_unlock();
    return aspace;
}

/**
 * @brief Destroy an address space and release its resources