linux-kernel - [PATCH v3 0/2] nfsd: allow the use of multiple backchannel slots

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Message-Id: <20241030-bcwide-v3-0-c2df49a26c45@kernel.org>
Date: Wed, 30 Oct 2024 10:48:45 -0400
From: Jeff Layton <jlayton@...nel.org>
To: Chuck Lever <chuck.lever@...cle.com>, Neil Brown <neilb@...e.de>, 
 Dai Ngo <Dai.Ngo@...cle.com>, Tom Talpey <tom@...pey.com>
Cc: Olga Kornievskaia <okorniev@...hat.com>, linux-nfs@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Jeff Layton <jlayton@...nel.org>
Subject: [PATCH v3 0/2] nfsd: allow the use of multiple backchannel slots

A few more minor updates to the set to fix some small-ish bugs, and do a
bit of cleanup. This seems to test OK for me so far.

Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
Changes in v3:
- add patch to convert se_flags to single se_dead bool
- fix off-by-one bug in handling of NFSD_BC_SLOT_TABLE_MAX
- don't reject target highest slot value of 0
- Link to v2: https://lore.kernel.org/r/20241029-bcwide-v2-1-e9010b6ef55d@kernel.org

Changes in v2:
- take cl_lock when fetching fields from session to be encoded
- use fls() instead of bespoke highest_unset_index()
- rename variables in several functions with more descriptive names
- clamp limit of for loop in update_cb_slot_table()
- re-add missing rpc_wake_up_queued_task() call
- fix slotid check in decode_cb_sequence4resok()
- add new per-session spinlock

---
Jeff Layton (2):
      nfsd: make nfsd4_session->se_flags a bool
      nfsd: allow for up to 32 callback session slots

 fs/nfsd/nfs4callback.c | 108 ++++++++++++++++++++++++++++++++++---------------
 fs/nfsd/nfs4state.c    |  17 +++++---
 fs/nfsd/state.h        |  19 ++++-----
 fs/nfsd/trace.h        |   2 +-
 4 files changed, 98 insertions(+), 48 deletions(-)
---
base-commit: 06c049d2a81a81f01ff072c6519d0c38b646b550
change-id: 20241025-bcwide-6bd7e4b63db2

Best regards,
-- 
Jeff Layton <jlayton@...nel.org>