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Intended customers: all users. New features/specifications: 1) Single-client write: When only one client is used to write files, the SMB client uses the write-back mode. Different from the write-through mode which writes small chunks of data to the backend each time, the write-back mode makes full use of the local write cache to reduce network communications, improving the overall write efficiency. 2) Single or multiple clients concurrent read: When only file read operations are performed, all SMB clients use the read-ahead mode. Each time a client pre-reads a batch of data to the local read cache, network communications caused by data reads are reduced, improving the overall read efficiency. 3) Multiple clients frequently opening and closing files: If multiple clients frequently open and close files, SMB clients use the delayed-close method. This reduces network communications caused by repeated file closing and opening and improves the overall file access efficiency.