From: Chuck Lever <[email protected]>
[ Upstream commit 043862b09cc00273e35e6c3a6389957953a34207 ]
And return explicit nfserr values that match what is documented in the
new comment / API contract.
Stable-dep-of: edcf9725150e ("nfsd: fix RELEASE_LOCKOWNER")
Signed-off-by: Chuck Lever <[email protected]>
---
fs/nfsd/nfs4state.c | 23 ++++++++++++++++++++---
1 file changed, 20 insertions(+), 3 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 9a77a3eac4ac..0dfc45d37658 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -6867,6 +6867,23 @@ check_for_locks(struct nfs4_file *fp, struct nfs4_lockowner *lowner)
return status;
}
+/**
+ * nfsd4_release_lockowner - process NFSv4.0 RELEASE_LOCKOWNER operations
+ * @rqstp: RPC transaction
+ * @cstate: NFSv4 COMPOUND state
+ * @u: RELEASE_LOCKOWNER arguments
+ *
+ * The lockowner's so_count is bumped when a lock record is added
+ * or when copying a conflicting lock. The latter case is brief,
+ * but can lead to fleeting false positives when looking for
+ * locks-in-use.
+ *
+ * Return values:
+ * %nfs_ok: lockowner released or not found
+ * %nfserr_locks_held: lockowner still in use
+ * %nfserr_stale_clientid: clientid no longer active
+ * %nfserr_expired: clientid not recognized
+ */
__be32
nfsd4_release_lockowner(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate,
@@ -6893,7 +6910,7 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
lo = find_lockowner_str_locked(clp, &rlockowner->rl_owner);
if (!lo) {
spin_unlock(&clp->cl_lock);
- return status;
+ return nfs_ok;
}
if (atomic_read(&lo->lo_owner.so_count) != 2) {
spin_unlock(&clp->cl_lock);
@@ -6909,11 +6926,11 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
put_ol_stateid_locked(stp, &reaplist);
}
spin_unlock(&clp->cl_lock);
+
free_ol_stateid_reaplist(&reaplist);
remove_blocked_locks(lo);
nfs4_put_stateowner(&lo->lo_owner);
-
- return status;
+ return nfs_ok;
}
static inline struct nfs4_client_reclaim *