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NFSD: Modernize nfsd4_release_lockowner() 

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>
This commit is contained in:
Chuck Lever 2022-05-22 12:07:18 -04:00
parent ce3c4ad7f4
commit bd8fdb6e54
1 changed files with 12 additions and 26 deletions
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38
fs/nfsd/nfs4state.c
View File

@ -7530,16 +7530,13 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
union nfsd4_op_u *u)
{
struct nfsd4_release_lockowner *rlockowner = &u->release_lockowner;
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);
clientid_t *clid = &rlockowner->rl_clientid;
struct nfs4_ol_stateid *stp;
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);
@ -7547,30 +7544,19 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
status = set_client(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;
}
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,