Function dfs_aspace_hash

components/dfs/dfs_v2/src/dfs_pcache.c:519–532

* @brief Calculate hash value for address space lookup * * This function computes a hash value based on mount point and path string. * It uses a simple string hashing algorithm combined with mount point pointer. * * @param[in] mnt Pointer to the mount point structure * @param[in] path Path string to be hashed (can be NULL) * * @return Computed hash value within range [0, RT_PAGECACHE_HASH

 * - Modulo operation to fit hash table size
 */
static uint32_t dfs_aspace_hash(struct dfs_mnt *mnt, const char *path)
{
    uint32_t val = 0;

    if (path)
    {
        while (*path)
        {
            val = ((val << 5) + val) + *path++;
        }
    }

    return (val ^ (unsigned long)mnt) & (RT_PAGECACHE_HASH_NR - 1);
}

/**
 * @brief Look up an address space in the page cache hash table