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author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-06-17 13:22:59 -0700 |
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committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-06-17 13:22:59 -0700 |
commit | 965b5d679146c9f69bc0325388bb9ed357863c4f (patch) | |
tree | d70fe13004404f1d3a203c8b9b90aa5f61150115 /fs/nfs/nfs4proc.c | |
parent | d5122201a7f90b2aa73092f158b84d1d74f1134d (diff) | |
download | op-kernel-dev-965b5d679146c9f69bc0325388bb9ed357863c4f.zip op-kernel-dev-965b5d679146c9f69bc0325388bb9ed357863c4f.tar.gz |
NFSv4: Handle more errors when recovering open file and locking state
It is possible for servers to return NFS4ERR_BAD_STATEID when
the state management code is recovering locks or is reclaiming state when
returning a delegation. Ensure that we handle that case.
While we're at it, add in handlers for NFS4ERR_STALE,
NFS4ERR_ADMIN_REVOKED, NFS4ERR_OPENMODE, NFS4ERR_DENIED and
NFS4ERR_STALE_STATEID, since the protocol appears to allow for them too.
Also handle ENOMEM...
Finally, rather than add new NFSv4.0-specific errors and error handling into
the generic delegation code, move that open file and locking state error
handling into the NFSv4 layer.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4proc.c')
-rw-r--r-- | fs/nfs/nfs4proc.c | 44 |
1 files changed, 38 insertions, 6 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index d326193..55314e7 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -804,16 +804,30 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state err = _nfs4_open_delegation_recall(ctx, state, stateid); switch (err) { case 0: - return err; + case -ENOENT: + case -ESTALE: + goto out; case -NFS4ERR_STALE_CLIENTID: case -NFS4ERR_STALE_STATEID: case -NFS4ERR_EXPIRED: /* Don't recall a delegation if it was lost */ nfs4_schedule_state_recovery(server->nfs_client); - return err; + goto out; + case -ERESTARTSYS: + /* + * The show must go on: exit, but mark the + * stateid as needing recovery. + */ + case -NFS4ERR_ADMIN_REVOKED: + case -NFS4ERR_BAD_STATEID: + nfs4_state_mark_reclaim_nograce(server->nfs_client, state); + case -ENOMEM: + err = 0; + goto out; } err = nfs4_handle_exception(server, err, &exception); } while (exception.retry); +out: return err; } @@ -3487,8 +3501,6 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f ret = nfs4_wait_for_completion_rpc_task(task); if (ret == 0) { ret = data->rpc_status; - if (ret == -NFS4ERR_DENIED) - ret = -EAGAIN; } else data->cancelled = 1; rpc_put_task(task); @@ -3576,9 +3588,11 @@ static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock * int err; do { + err = _nfs4_proc_setlk(state, cmd, request); + if (err == -NFS4ERR_DENIED) + err = -EAGAIN; err = nfs4_handle_exception(NFS_SERVER(state->inode), - _nfs4_proc_setlk(state, cmd, request), - &exception); + err, &exception); } while (exception.retry); return err; } @@ -3635,11 +3649,29 @@ int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) printk(KERN_ERR "%s: unhandled error %d.\n", __func__, err); case 0: + case -ESTALE: goto out; case -NFS4ERR_EXPIRED: case -NFS4ERR_STALE_CLIENTID: + case -NFS4ERR_STALE_STATEID: nfs4_schedule_state_recovery(server->nfs_client); goto out; + case -ERESTARTSYS: + /* + * The show must go on: exit, but mark the + * stateid as needing recovery. + */ + case -NFS4ERR_ADMIN_REVOKED: + case -NFS4ERR_BAD_STATEID: + case -NFS4ERR_OPENMODE: + nfs4_state_mark_reclaim_nograce(server->nfs_client, state); + err = 0; + goto out; + case -ENOMEM: + case -NFS4ERR_DENIED: + /* kill_proc(fl->fl_pid, SIGLOST, 1); */ + err = 0; + goto out; case -NFS4ERR_DELAY: break; } |