diff options
| author | Jeff Layton | 2014-06-30 17:48:41 +0200 |
|---|---|---|
| committer | J. Bruce Fields | 2014-07-10 02:54:59 +0200 |
| commit | fd44907c2d8f0647903d0c55520a34e24eeeb1cd (patch) | |
| tree | 7cf5a5ddf7ec0df500286e1ac5a8889ca4377f63 | |
| parent | nfsd: NFSv4 lock-owners are not associated to a specific file (diff) | |
| download | kernel-qcow2-linux-fd44907c2d8f0647903d0c55520a34e24eeeb1cd.tar.gz kernel-qcow2-linux-fd44907c2d8f0647903d0c55520a34e24eeeb1cd.tar.xz kernel-qcow2-linux-fd44907c2d8f0647903d0c55520a34e24eeeb1cd.zip | |
nfsd: clean up nfsd4_release_lockowner
Now that we know that we won't have several lockowners with the same,
owner->data, we can simplify nfsd4_release_lockowner and get rid of
the lo_list in the process.
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
| -rw-r--r-- | fs/nfsd/nfs4state.c | 46 | ||||
| -rw-r--r-- | fs/nfsd/state.h | 1 |
2 files changed, 22 insertions, 25 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index ff10919eebde..86ec359349c6 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -4783,11 +4783,10 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp, struct nfsd4_release_lockowner *rlockowner) { clientid_t *clid = &rlockowner->rl_clientid; - struct nfs4_stateowner *sop; + struct nfs4_stateowner *sop = NULL, *tmp; struct nfs4_lockowner *lo; struct nfs4_ol_stateid *stp; struct xdr_netobj *owner = &rlockowner->rl_owner; - struct list_head matches; unsigned int hashval = ownerstr_hashval(clid->cl_id, owner); __be32 status; struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); @@ -4802,33 +4801,32 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp, goto out; status = nfserr_locks_held; - INIT_LIST_HEAD(&matches); - list_for_each_entry(sop, &nn->ownerstr_hashtbl[hashval], so_strhash) { - if (sop->so_is_open_owner) - continue; - if (!same_owner_str(sop, owner, clid)) + /* Find the matching lock stateowner */ + list_for_each_entry(tmp, &nn->ownerstr_hashtbl[hashval], so_strhash) { + if (tmp->so_is_open_owner) continue; - list_for_each_entry(stp, &sop->so_stateids, - st_perstateowner) { - lo = lockowner(sop); - if (check_for_locks(stp->st_file, lo)) - goto out; - list_add(&lo->lo_list, &matches); + if (same_owner_str(tmp, owner, clid)) { + sop = tmp; + break; } } - /* Clients probably won't expect us to return with some (but not all) - * of the lockowner state released; so don't release any until all - * have been checked. */ - status = nfs_ok; - while (!list_empty(&matches)) { - lo = list_entry(matches.next, struct nfs4_lockowner, - lo_list); - /* unhash_stateowner deletes so_perclient only - * for openowners. */ - list_del(&lo->lo_list); - release_lockowner(lo); + + /* No matching owner found, maybe a replay? Just declare victory... */ + if (!sop) { + status = nfs_ok; + goto out; + } + + lo = lockowner(sop); + /* see if there are still any locks associated with it */ + list_for_each_entry(stp, &sop->so_stateids, st_perstateowner) { + if (check_for_locks(stp->st_file, lo)) + goto out; } + + status = nfs_ok; + release_lockowner(lo); out: nfs4_unlock_state(); return status; diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index 23b110939da1..ab937b5f10ab 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -364,7 +364,6 @@ struct nfs4_openowner { struct nfs4_lockowner { struct nfs4_stateowner lo_owner; /* must be first element */ - struct list_head lo_list; /* for temporary uses */ }; static inline struct nfs4_openowner * openowner(struct nfs4_stateowner *so) |