5.4-stable review patch. If anyone has any objections, please let me know.
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From: Chuck Lever chuck.lever@oracle.com
[ Upstream commit bd8fdb6e545f950f4654a9a10d7e819ad48146e5 ]
Refactor: Use existing helpers that other lock operations use. This change removes several automatic variables, so re-organize the variable declarations for readability.
Signed-off-by: Chuck Lever chuck.lever@oracle.com Stable-dep-of: edcf9725150e ("nfsd: fix RELEASE_LOCKOWNER") Signed-off-by: Sasha Levin sashal@kernel.org --- fs/nfsd/nfs4state.c | 36 +++++++++++------------------------- 1 file changed, 11 insertions(+), 25 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index a0aa7e63739d..9a77a3eac4ac 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -6873,16 +6873,13 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp, union nfsd4_op_u *u) { struct nfsd4_release_lockowner *rlockowner = &u->release_lockowner; + struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); clientid_t *clid = &rlockowner->rl_clientid; - struct nfs4_stateowner *sop; - struct nfs4_lockowner *lo = NULL; struct nfs4_ol_stateid *stp; - struct xdr_netobj *owner = &rlockowner->rl_owner; - unsigned int hashval = ownerstr_hashval(owner); - __be32 status; - struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); + struct nfs4_lockowner *lo; struct nfs4_client *clp; - LIST_HEAD (reaplist); + LIST_HEAD(reaplist); + __be32 status;
dprintk("nfsd4_release_lockowner clientid: (%08x/%08x):\n", clid->cl_boot, clid->cl_id); @@ -6890,30 +6887,19 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp, status = lookup_clientid(clid, cstate, nn); if (status) return status; - clp = cstate->clp; - /* Find the matching lock stateowner */ - spin_lock(&clp->cl_lock); - list_for_each_entry(sop, &clp->cl_ownerstr_hashtbl[hashval], - so_strhash) {
- if (sop->so_is_open_owner || !same_owner_str(sop, owner)) - continue; - - if (atomic_read(&sop->so_count) != 1) { - spin_unlock(&clp->cl_lock); - return nfserr_locks_held; - } - - lo = lockowner(sop); - nfs4_get_stateowner(sop); - break; - } + spin_lock(&clp->cl_lock); + lo = find_lockowner_str_locked(clp, &rlockowner->rl_owner); if (!lo) { spin_unlock(&clp->cl_lock); return status; } - + if (atomic_read(&lo->lo_owner.so_count) != 2) { + spin_unlock(&clp->cl_lock); + nfs4_put_stateowner(&lo->lo_owner); + return nfserr_locks_held; + } unhash_lockowner_locked(lo); while (!list_empty(&lo->lo_owner.so_stateids)) { stp = list_first_entry(&lo->lo_owner.so_stateids,