Function dfs_aspace_hash_lookup

components/dfs/dfs_v2/src/dfs_pcache.c:546–566

* @brief Look up an address space in the page cache hash table * * This function searches for an address space matching the given dentry and operations * in the page cache hash table. If found, it increments the reference count of the * address space before returning it. * * @param[in] dentry Directory entry containing mount point and path information * @param[in] ops Pointer to address

 * @return Pointer to the found address space on success, NULL if not found
 */
static struct dfs_aspace *dfs_aspace_hash_lookup(struct dfs_dentry *dentry, const struct dfs_aspace_ops *ops)
{
    struct dfs_aspace *aspace = RT_NULL;

    dfs_pcache_lock();
    rt_list_for_each_entry(aspace, &__pcache.head[dfs_aspace_hash(dentry->mnt, dentry->pathname)], hash_node)
    {

        if (aspace->mnt == dentry->mnt
            && aspace->ops == ops
            && !strcmp(aspace->pathname, dentry->pathname))
        {
            rt_atomic_add(&aspace->ref_count, 1);
            dfs_pcache_unlock();
            return aspace;
        }
    }
    dfs_pcache_unlock();

    return RT_NULL;
}

/**
 * @brief Insert an address space into page cache