From: "J. Bruce Fields" <bfields@xxxxxxxxxx>
This reverts commit eb2099f31b0f090684a64ef8df44a30ff7c45fc2 "nfsd4:
release lockowners on last unlock in 4.1 case". Trond identified
language in rfc 5661 section 8.2.4 which forbids this behavior:
Stateids associated with byte-range locks are an exception.
They remain valid even if a LOCKU frees all remaining locks, so
long as the open file with which they are associated remains
open, unless the client frees the stateids via the FREE_STATEID
operation.
And bakeathon 2013 testing found a 4.1 freebsd client was getting an
incorrect BAD_STATEID return from a FREE_STATEID in the above situation
and then failing.
The spec language honestly was probably a mistake but at this point with
implementations already following it we're probably stuck with that.
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index fcc0610..a7d8a11 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4514,7 +4514,6 @@ __be32
nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_locku *locku)
{
- struct nfs4_lockowner *lo;
struct nfs4_ol_stateid *stp;
struct file *filp = NULL;
struct file_lock *file_lock = NULL;
@@ -4547,10 +4546,9 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
status = nfserr_jukebox;
goto out;
}
- lo = lockowner(stp->st_stateowner);
locks_init_lock(file_lock);
file_lock->fl_type = F_UNLCK;
- file_lock->fl_owner = (fl_owner_t)lo;
+ file_lock->fl_owner = (fl_owner_t)lockowner(stp->st_stateowner);
file_lock->fl_pid = current->tgid;
file_lock->fl_file = filp;
file_lock->fl_flags = FL_POSIX;
@@ -4569,11 +4567,6 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
update_stateid(&stp->st_stid.sc_stateid);
memcpy(&locku->lu_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
- if (nfsd4_has_session(cstate) && !check_for_locks(stp->st_file, lo)) {
- WARN_ON_ONCE(cstate->replay_owner);
- release_lockowner(lo);
- }
-
out:
nfsd4_bump_seqid(cstate, status);
if (!cstate->replay_owner)
--
1.8.1.4
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