NFSv4.1 Server DRC rewrite Version 3 This patch set applies to 2.6.30-rc8 and is the third version of the NFSv4.1 server DRC rewrite. As per Bruce Field's suggestion, the clientid cache for CREATE_SESSION operations has been changed from storing the encoded response to storing struct nfsd4_create_session, the CREATE_SESSION xdr structure. The NFSv4.1 DRC is changed from a page based cache to a buffer based cache. The logic for the single slot clientid cache has been separated from the session slot logic to handle the CREATE_SESSION call preceeded by a SEQUENCE and all the replay combinations therein. The session DRC now caches encoded operations with the exception of the SEQUENCE operation which for a replay is encoded with the current slot and session values. A review of message sizes indicates that a 512 byte buffer for the operations is adequate. Not addressed is replacing the nfsd4_check_drc_limit() post-operation checking with a pre-operation processing estimate of the encoded per operation result. Testing: 4.1 mount: Connectathon and 4.1pynfs including the new create session replay tests. 4.0 mount; Connectathon. Clientid (create session operation) single slot DRC patches 0001-nfsd41-create_session-check-replay-first.patch 0002-nfsd41-change-check_slot_seqid-parameters.patch 0003-nfsd41-declare-clientid-create-session-slot-structu.patch 0004-nfsd41-encode-create_session-result-into-clid-cache.patch 0005-nfsd41-replay-solo-and-embedded-create-session.patch 0006-nfsd41-remove-the-unused-nfsd4_slot-create-session-s.patch Sessions (sequence operation) multiple slot DRC patches. 0007-nfsd41-sanity-check-client-drc-maxreqs.patch 0008-nfsd41-change-from-page-to-memory-based-drc-limits.patch 0009-nfsd41-use-globals-for-DRC-memory-use-management.patch 0010-nfsd41-set-the-session-maximum-response-size-cached.patch 0011-nfsd41-use-static-buffers-for-sessions-DRC.patch 0012-nfsd41-replace-ce_cachethis-with-nfsd4_slot-field.patch 0013-nfsd41-replace-ce_opcnt-with-nfsd4_slot-field.patch 0014-nfsd41-nfsd41-replace-ce_status-with-nfsd4_slot-fi.patch 0015-nfsd41-obliterate-nfsd4_copy_pages.patch 0016-nfsd41-obliterate-nfsd41_copy_replay_data.patch 0017-nfsd41-obliterate-nfsd4_release_respages.patch 0018-nfsd41-remove-iovlen-field-from-nfsd4_compound_stat.patch 0019-nfsd41-remove-struct-nfsd4_cache_entry.patch 0020-nfsd41-obliterate-nfsd4_set_statp.patch 0021-nfsd41-rename-nfsd4_enc_uncached_replay.patch 0022-nfsd41-encode-replay-sequence-from-the-slot-values.patch 0023-nfsd41-fix-nfsd4_replay_cache_entry-comments.patch 0024-nfsd41-fix-nfsd4_store_cache_entry-comments.patch 0025-nfsd41-support-16-slots-per-session.patch 0026-nfsd41-use-the-maximum-operations-per-compound-in-n.patch 0027-nfsd41-fix-nfsd4_store_cache_entry-dprintk.patch 0028-nfsd41-add-test-for-failed-sequence-operation.patch 0029-nfsd41-remove-redundant-failed-sequence-check.patch 0030-nfsd41-only-reference-the-session-on-non-replay-seq.patch patch-message.txt Comments welcome. -->Andy -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
