Re: [PATCH 0/29] NFSv4.1 Server DRC rewrite Version 2

["J. Bruce Fields" <bfields@fieldses.org>]

Are these patches against Benny's tree?

I need patches against my tree (ideally, against my for-2.6.31 branch).

If that means sending me patches from Benny's tree first, that's fine.
Just as long as I know what order to go through all these in....

--b.

On Tue, Apr 28, 2009 at 12:56:14PM -0400, andros@netapp.com wrote:
> Version 2 of the NFSv4.1 DRC rewrite.
> 
> V1 -> V2 Differences:
> 
> 1) Separate structure for the single slot clientid cache because it does not
> need several of the fields that the sessions multiple slot cache needs, and
> has a different static cache buffer size.
> 
> 2) Move from a dynamic to a static buffer allocation for the sessions DRC
> because we can't promise the client to be able to cache a response and then
> run out of memory and not be able to cache a response.
> Switch from a 1024 byte to a 512 byte buffer.
> 
> 3) Removed struct nfsd4_cache_entry, replaced by new nfsd4_slot fields.
> 
> 4) Global DRC memory limit tracking.
> 
> 
> This is a rewrite of the NFSv4.1 DRC, switching 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 the necessary pre-operation processing estimate of the encoded
> per operation result to check against the negotiated fore channel maximum
> response size cached.
> 
> I've tested NFSv4.1 mounts using Connectathon and the new pynfs 4.1 tests,
> where I added two new Clientid cache replay tests [to be submitted]to
> st_create_session.py.
> 
> I've tested NFSv4.0 mounts using Connectathon and the pynfs v4.0 tests.
> 
> As always, comments and suggestions welcome.
> 
> -->Andy
> 
> Bug fix
> 0001-nfsd41-slots-are-freed-with-session.patch
> 
> Clientid single slot cache
> 0002-nfsd41-change-check_slot_seqid-parameters.patch
> 0003-nfsd41-turn-off-create-session-caching.patch
> 0004-nfsd41-separate-clientid-slot-from-session-slot.patch
> 0005-nfsd41-encode-create_session-result-into-cache.patch
> 0006-nfsd41-create_session-check-replay-first.patch
> 0007-nfsd41-replay-solo-and-embedded-create-session.patch
> 
> Session slot cache
> 0008-nfsd41-sanity-check-client-drc-maxreqs.patch
> 0009-nfsd41-change-from-page-to-memory-based-drc-limits.patch
> 0010-nfsd41-use-globals-for-DRC-memory-use-management.patch
> 0011-nfsd41-set-the-session-maximum-response-size-cached.patch
> 0012-nfsd41-use-static-buffers-for-sessions-DRC.patch
> 0013-nfsd41-replace-ce_cachethis-with-nfsd4_slot-field.patch
> 0014-nfsd41-replace-ce_opcnt-with-nfsd4_slot-field.patch
> 0015-nfsd41-nfsd41-replace-ce_status-with-nfsd4_slot-fi.patch
> 0016-nfsd41-obliterate-nfsd4_copy_pages.patch
> 0017-nfsd41-obliterate-nfsd41_copy_replay_data.patch
> 0018-nfsd41-obliterate-nfsd4_release_respages.patch
> 0019-nfsd41-remove-iovlen-field-from-nfsd4_compound_stat.patch
> 0020-nfsd41-remove-struct-nfsd4_cache_entry.patch
> 0021-nfsd41-obliterate-nfsd4_set_statp.patch
> 0022-nfsd41-rename-nfsd4_enc_uncached_replay.patch
> 0023-nfsd41-encode-replay-sequence-from-the-slot-values.patch
> 0024-nfsd41-fix-nfsd4_replay_cache_entry-comments.patch
> 0025-nfsd41-fix-nfsd4_store_cache_entry-comments.patch
> 0026-nfsd41-support-16-slots-per-session.patch
> 0027-nfsd41-use-the-maximum-operations-per-compound-in-n.patch
> 0028-nfsd41-fix-nfsd4_store_cache_entry-dprintk.patch
> 0029-nfsd41-add-test-for-failed-sequence-operation.patch
> 0030-nfsd41-remove-redundant-failed-sequence-check.patch
> 0031-nfsd41-only-reference-the-session-on-non-replay-seq.patch
>