diff options
| author |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-12-23 15:21:43 -0500 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-12-23 15:21:43 -0500 |
| commit | fe1d81952e7f62b9da7dc438caaa07e35ec2b908 (patch) | |
| tree | 177ba2a04c9ff9d040f87da7e6099e6009db7cd6 /fs/nfs | |
| parent | NFSv4: Add a recovery marking scheme for state owners (diff) | |
| download | linux-dev-fe1d81952e7f62b9da7dc438caaa07e35ec2b908.tar.xz linux-dev-fe1d81952e7f62b9da7dc438caaa07e35ec2b908.zip | |
NFSv4: Ensure that nfs4_reclaim_open_state() doesn't depend on cl_sem
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/nfs4state.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 7dcca23167dd..beade5570b56 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -893,11 +893,15 @@ 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); list_for_each_entry(state, &sp->so_states, open_states) { if (!test_and_clear_bit(ops->state_flag_bit, &state->flags)) continue; if (state->state == 0) continue; + atomic_inc(&state->count); + spin_unlock(&sp->so_lock); status = ops->recover_open(sp, state); if (status >= 0) { status = nfs4_reclaim_locks(state, ops); @@ -907,7 +911,8 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs printk("%s: Lock reclaim failed!\n", __func__); } - continue; + nfs4_put_open_state(state); + goto restart; } } switch (status) { @@ -935,9 +940,13 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs case -NFS4ERR_STALE_CLIENTID: goto out_err; } + nfs4_put_open_state(state); + goto restart; } + spin_unlock(&sp->so_lock); return 0; out_err: + nfs4_put_open_state(state); return status; } |