From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Ensure that nfsd4_process_open2() keeps a reference to the open
stateid until it is done working with it. Necessary step toward
client_mutex removal.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 5cb6305036cd..f3018cb26769 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2996,6 +2996,7 @@ alloc_init_open_stateowner(unsigned int strhashval, struct nfsd4_open *open,
static void init_open_stateid(struct nfs4_ol_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {
struct nfs4_openowner *oo = open->op_openowner;
+ atomic_inc(&stp->st_stid.sc_count);
stp->st_stid.sc_type = NFS4_OPEN_STID;
INIT_LIST_HEAD(&stp->st_locks);
stp->st_stateowner = &oo->oo_owner;
@@ -3376,6 +3377,7 @@ nfsd4_find_existing_open(struct nfs4_file *fp, struct nfsd4_open *open)
continue;
if (local->st_stateowner == &oo->oo_owner) {
ret = local;
+ atomic_inc(&ret->st_stid.sc_count);
break;
}
}
@@ -3836,6 +3838,8 @@ out:
open->op_rflags |= NFS4_OPEN_RESULT_CONFIRM;
if (dp)
nfs4_put_stid(&dp->dl_stid);
+ if (stp)
+ nfs4_put_stid(&stp->st_stid);
return status;
}
--
1.9.3
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