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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-10-04 17:59:08 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-10-19 19:42:53 -0400 |
| commit | 6eaa61496fb3b93cceface7a296415fc4c030bce (patch) | |
| tree | 88093c8ca07058b940a871d92fd1074968098dbe /fs/nfs/nfs4state.c | |
| parent | ae1007d37e00144b72906a4bdc47d517ae91bcc1 (diff) | |
| download | lwn-6eaa61496fb3b93cceface7a296415fc4c030bce.tar.gz lwn-6eaa61496fb3b93cceface7a296415fc4c030bce.zip | |
NFSv4: Don't call nfs4_reclaim_complete() on receiving NFS4ERR_STALE_CLIENTID
If the server sends us an NFS4ERR_STALE_CLIENTID while the state management
thread is busy reclaiming state, we do want to treat all state that wasn't
reclaimed before the STALE_CLIENTID as if a network partition occurred (see
the edge conditions described in RFC3530 and RFC5661).
What we do not want to do is to send an nfs4_reclaim_complete(), since we
haven't yet even started reclaiming state after the server rebooted.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
Diffstat (limited to 'fs/nfs/nfs4state.c')
| -rw-r--r-- | fs/nfs/nfs4state.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 3e2f19b04c06..940cf7c070af 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1138,16 +1138,14 @@ static void nfs4_reclaim_complete(struct nfs_client *clp, (void)ops->reclaim_complete(clp); } -static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp) +static int nfs4_state_clear_reclaim_reboot(struct nfs_client *clp) { struct nfs4_state_owner *sp; struct rb_node *pos; struct nfs4_state *state; if (!test_and_clear_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state)) - return; - - nfs4_reclaim_complete(clp, clp->cl_mvops->reboot_recovery_ops); + return 0; for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) { sp = rb_entry(pos, struct nfs4_state_owner, so_client_node); @@ -1161,6 +1159,14 @@ static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp) } nfs_delegation_reap_unclaimed(clp); + return 1; +} + +static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp) +{ + if (!nfs4_state_clear_reclaim_reboot(clp)) + return; + nfs4_reclaim_complete(clp, clp->cl_mvops->reboot_recovery_ops); } static void nfs_delegation_clear_all(struct nfs_client *clp) @@ -1187,7 +1193,7 @@ static int nfs4_recovery_handle_error(struct nfs_client *clp, int error) case -NFS4ERR_STALE_CLIENTID: case -NFS4ERR_LEASE_MOVED: set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); - nfs4_state_end_reclaim_reboot(clp); + nfs4_state_clear_reclaim_reboot(clp); nfs4_state_start_reclaim_reboot(clp); break; case -NFS4ERR_EXPIRED: |