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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-09-22 19:39:06 +0200 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2016-09-27 20:34:31 +0200 |
| commit | 059b43e9744efe5b6f8e83516d2a0e813bfaee70 (patch) | |
| tree | bc821075e4c81fbd232a650d8ffa76beb6adf139 /fs | |
| parent | NFSv4.1: Ensure we call FREE_STATEID if needed on close/delegreturn/locku (diff) | |
| download | linux-059b43e9744efe5b6f8e83516d2a0e813bfaee70.tar.xz linux-059b43e9744efe5b6f8e83516d2a0e813bfaee70.zip | |
NFSv4: Ensure we don't re-test revoked and freed stateids
This fixes a potential infinite loop in nfs_reap_expired_delegations.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Tested-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/delegation.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 0ffead281555..484f14700108 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -656,6 +656,7 @@ static void nfs_mark_delegation_revoked(struct nfs_server *server, struct nfs_delegation *delegation) { set_bit(NFS_DELEGATION_REVOKED, &delegation->flags); + delegation->stateid.type = NFS4_INVALID_STATEID_TYPE; nfs_mark_return_delegation(server, delegation); } @@ -894,6 +895,8 @@ static inline bool nfs4_server_rebooted(const struct nfs_client *clp) static void nfs_mark_test_expired_delegation(struct nfs_server *server, struct nfs_delegation *delegation) { + if (delegation->stateid.type == NFS4_INVALID_STATEID_TYPE) + return; clear_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags); set_bit(NFS_DELEGATION_TEST_EXPIRED, &delegation->flags); set_bit(NFS4CLNT_DELEGATION_EXPIRED, &server->nfs_client->cl_state); |