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nfsd: nfsd4_locku() must reference the lock stateid

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Ensure that nfsd4_locku() keeps a reference to the lock stateid
until it is done working with it. Necessary step toward client_mutex
removal.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Trond Myklebust 2014-07-29 21:34:16 -04:00 committed by J. Bruce Fields
parent 3d0fabd5a4
commit 858cc57336
1 changed files with 5 additions and 1 deletions
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6
fs/nfsd/nfs4state.c
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@ -5147,10 +5147,12 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
&stp, nn);
if (status)
goto out;
/* FIXME: move into nfs4_preprocess_seqid_op */
atomic_inc(&stp->st_stid.sc_count);
filp = find_any_file(stp->st_stid.sc_file);
if (!filp) {
status = nfserr_lock_range;
goto out;
goto put_stateid;
}
file_lock = locks_alloc_lock();
if (!file_lock) {
@ -5180,6 +5182,8 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
memcpy(&locku->lu_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t));
fput:
fput(filp);
put_stateid:
nfs4_put_stid(&stp->st_stid);
out:
nfsd4_bump_seqid(cstate, status);
if (!cstate->replay_owner)