[NFS-Ganesha-Devel] [M] Change in ...nfs-ganesha[next]: Optimisation to avoid same-client lock-path delegation recall in FSAL_UP

Suhas Athani has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1238566?usp=email ) Change subject: Optimisation to avoid same-client lock-path delegation recall in FSAL_UP ...................................................................... Optimisation to avoid same-client lock-path delegation recall in FSAL_UP This patch is proposed as an optimised solution for patch - https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1235527 This change fixes recall24 by preventing spurious NFS delegation recall when a backend upcall arrives during same-client lock/open-mode transitions. With Ceph delegation callbacks, lock-driven reopen activity could trigger up_async_delegrecall, leading to delegrecall_one / CB_RECALL even when all active locks belong to the same client that owns the delegation. Added a guard in FSAL_UP (delegrecall_impl_per_state) to skip recall when all tracked active NFSv4 locks on the file belong to the same clientid as the delegation owner. In that case, delegation state is restored to DELEG_GRANTED and CB_RECALL is not issued. Optimization: - Add lock_clientid_hint on struct state_file, maintained in state_lock.c when locks are added, removed, or wiped. - First lock records that client’s clientid; a lock from a different client sets the hint to UINT64_MAX , clearing the last lock resets the hint to 0. - delegrecall_skip_for_same_client_locks() uses this hint to check instead of iterating file.lock_list. This test case is from nfstest delegation suite - https://github.com/kofemann/nfstest/blob/master/test/nfstest_delegation Change-Id: I1e33457561db047b311d310e5e1238d4d6f69065 Signed-off-by: Suhas Athani <Suhas.Athani(a)ibm.com&gt; --- M src/FSAL_UP/fsal_up_top.c M src/SAL/state_lock.c M src/include/sal_data.h M src/include/sal_functions.h 4 files changed, 129 insertions(+), 37 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/66/1238566/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1238566?usp=email To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: I1e33457561db047b311d310e5e1238d4d6f69065 Gerrit-Change-Number: 1238566 Gerrit-PatchSet: 1 Gerrit-Owner: Suhas Athani <Suhas.Athani(a)ibm.com&gt;