Currently, it's protected by the client_mutex. Move it so that the list
and the fields in the openowner are protected by the client_lock.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 37 ++++++++++++++++++++++++++++++-------
1 file changed, 30 insertions(+), 7 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index da2410f392b4..3ef8d9a577ae 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1090,13 +1090,19 @@ static void unhash_openowner_locked(struct nfs4_openowner *oo)
static void release_last_closed_stateid(struct nfs4_openowner *oo)
{
- struct nfs4_ol_stateid *s = oo->oo_last_closed_stid;
+ struct nfsd_net *nn = net_generic(oo->oo_owner.so_client->net,
+ nfsd_net_id);
+ struct nfs4_ol_stateid *s;
+ spin_lock(&nn->client_lock);
+ s = oo->oo_last_closed_stid;
if (s) {
list_del_init(&oo->oo_close_lru);
oo->oo_last_closed_stid = NULL;
- put_generic_stateid(s);
}
+ spin_unlock(&nn->client_lock);
+ if (s)
+ put_generic_stateid(s);
}
static void release_openowner(struct nfs4_openowner *oo)
@@ -3250,6 +3256,7 @@ static void init_open_stateid(struct nfs4_ol_stateid *stp, struct nfs4_file *fp,
static void
move_to_close_lru(struct nfs4_ol_stateid *s, struct net *net)
{
+ struct nfs4_ol_stateid *last;
struct nfs4_openowner *oo = openowner(s->st_stateowner);
struct nfsd_net *nn = net_generic(s->st_stid.sc_client->net,
nfsd_net_id);
@@ -3273,10 +3280,14 @@ move_to_close_lru(struct nfs4_ol_stateid *s, struct net *net)
s->st_stid.sc_file = NULL;
}
- release_last_closed_stateid(oo);
+ spin_lock(&nn->client_lock);
+ last = oo->oo_last_closed_stid;
oo->oo_last_closed_stid = s;
list_move_tail(&oo->oo_close_lru, &nn->close_lru);
oo->oo_time = get_seconds();
+ spin_unlock(&nn->client_lock);
+ if (last)
+ put_generic_stateid(last);
}
static int
@@ -4147,6 +4158,7 @@ nfs4_laundromat(struct nfsd_net *nn)
struct nfs4_client *clp;
struct nfs4_openowner *oo;
struct nfs4_delegation *dp;
+ struct nfs4_ol_stateid *stp;
struct list_head *pos, *next, reaplist;
time_t cutoff = get_seconds() - nn->nfsd4_lease;
time_t t, new_timeo = nn->nfsd4_lease;
@@ -4198,15 +4210,26 @@ nfs4_laundromat(struct nfsd_net *nn)
dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru);
revoke_delegation(dp);
}
- list_for_each_safe(pos, next, &nn->close_lru) {
- oo = container_of(pos, struct nfs4_openowner, oo_close_lru);
- if (time_after((unsigned long)oo->oo_time, (unsigned long)cutoff)) {
+
+ spin_lock(&nn->client_lock);
+ while (!list_empty(&nn->close_lru)) {
+ oo = list_first_entry(&nn->close_lru, struct nfs4_openowner,
+ oo_close_lru);
+ if (time_after((unsigned long)oo->oo_time,
+ (unsigned long)cutoff)) {
t = oo->oo_time - cutoff;
new_timeo = min(new_timeo, t);
break;
}
- release_last_closed_stateid(oo);
+ list_del_init(&oo->oo_close_lru);
+ stp = oo->oo_last_closed_stid;
+ oo->oo_last_closed_stid = NULL;
+ spin_unlock(&nn->client_lock);
+ put_generic_stateid(stp);
+ spin_lock(&nn->client_lock);
}
+ spin_unlock(&nn->client_lock);
+
new_timeo = max_t(time_t, new_timeo, NFSD_LAUNDROMAT_MINTIMEOUT);
nfs4_unlock_state();
return new_timeo;
--
1.9.3
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