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-rw-r--r--fs/nfs/nfs4state.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index e61f68d5ef2..6ace365c633 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -518,6 +518,8 @@ nfs4_alloc_state_owner(struct nfs_server *server,
nfs4_init_seqid_counter(&sp->so_seqid);
atomic_set(&sp->so_count, 1);
INIT_LIST_HEAD(&sp->so_lru);
+ seqcount_init(&sp->so_reclaim_seqcount);
+ mutex_init(&sp->so_delegreturn_mutex);
return sp;
}
@@ -1390,8 +1392,9 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs
* recovering after a network partition or a reboot from a
* server that doesn't support a grace period.
*/
-restart:
spin_lock(&sp->so_lock);
+ write_seqcount_begin(&sp->so_reclaim_seqcount);
+restart:
list_for_each_entry(state, &sp->so_states, open_states) {
if (!test_and_clear_bit(ops->state_flag_bit, &state->flags))
continue;
@@ -1412,6 +1415,7 @@ restart:
}
spin_unlock(&state->state_lock);
nfs4_put_open_state(state);
+ spin_lock(&sp->so_lock);
goto restart;
}
}
@@ -1449,12 +1453,17 @@ restart:
goto out_err;
}
nfs4_put_open_state(state);
+ spin_lock(&sp->so_lock);
goto restart;
}
+ write_seqcount_end(&sp->so_reclaim_seqcount);
spin_unlock(&sp->so_lock);
return 0;
out_err:
nfs4_put_open_state(state);
+ spin_lock(&sp->so_lock);
+ write_seqcount_end(&sp->so_reclaim_seqcount);
+ spin_unlock(&sp->so_lock);
return status;
}