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https://github.com/adulau/aha.git
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NFSv41: Clean up slot table management
We no longer need to maintain a distinction between nfs41_sequence_done and nfs41_sequence_free_slot. This fixes a number of slot table leakages in the NFSv4.1 code. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
parent
f26468fb93
commit
d61e612a72
5 changed files with 21 additions and 82 deletions
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@ -197,8 +197,7 @@ extern const u32 nfs41_maxwrite_overhead;
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#endif
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/* nfs4proc.c */
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extern void nfs4_restart_rpc(struct rpc_task *, const struct nfs_client *,
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struct nfs4_sequence_res *);
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extern void nfs4_restart_rpc(struct rpc_task *, const struct nfs_client *);
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#ifdef CONFIG_NFS_V4
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extern struct rpc_procinfo nfs4_procedures[];
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#endif
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@ -275,20 +274,6 @@ extern int _nfs4_call_sync_session(struct nfs_server *server,
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struct nfs4_sequence_res *res,
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int cache_reply);
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#ifdef CONFIG_NFS_V4_1
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extern void nfs41_sequence_free_slot(const struct nfs_client *,
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struct nfs4_sequence_res *res);
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#endif /* CONFIG_NFS_V4_1 */
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static inline void nfs4_sequence_free_slot(const struct nfs_client *clp,
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struct nfs4_sequence_res *res)
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{
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#ifdef CONFIG_NFS_V4_1
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if (nfs4_has_session(clp))
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nfs41_sequence_free_slot(clp, res);
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#endif /* CONFIG_NFS_V4_1 */
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}
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/*
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* Determine the device name as a string
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*/
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@ -341,15 +341,11 @@ nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid)
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free_slotid, tbl->highest_used_slotid);
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}
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void nfs41_sequence_free_slot(const struct nfs_client *clp,
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static void nfs41_sequence_free_slot(const struct nfs_client *clp,
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struct nfs4_sequence_res *res)
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{
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struct nfs4_slot_table *tbl;
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if (!nfs4_has_session(clp)) {
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dprintk("%s: No session\n", __func__);
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return;
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}
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tbl = &clp->cl_session->fc_slot_table;
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if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) {
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/* just wake up the next guy waiting since
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@ -407,7 +403,6 @@ static void nfs41_sequence_done(struct nfs_client *clp,
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spin_unlock(&clp->cl_lock);
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/* Check sequence flags */
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nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
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return;
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}
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out:
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/* The session may be reset by one of the error handlers. */
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@ -556,7 +551,6 @@ static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
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struct nfs41_call_sync_data *data = calldata;
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nfs41_sequence_done(data->clp, data->seq_res, task->tk_status);
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nfs41_sequence_free_slot(data->clp, data->seq_res);
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}
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struct rpc_call_ops nfs41_call_sync_ops = {
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@ -632,12 +626,10 @@ static void nfs4_sequence_done(const struct nfs_server *server,
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#endif /* CONFIG_NFS_V4_1 */
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}
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void nfs4_restart_rpc(struct rpc_task *task, const struct nfs_client *clp,
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struct nfs4_sequence_res *res)
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void nfs4_restart_rpc(struct rpc_task *task, const struct nfs_client *clp)
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{
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#ifdef CONFIG_NFS_V4_1
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if (nfs4_has_session(clp)) {
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nfs41_sequence_free_slot(clp, res);
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rpc_restart_call_prepare(task);
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return;
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}
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@ -645,15 +637,6 @@ void nfs4_restart_rpc(struct rpc_task *task, const struct nfs_client *clp,
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rpc_restart_call(task);
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}
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/* no restart, therefore free slot here */
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static void nfs4_sequence_done_free_slot(const struct nfs_server *server,
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struct nfs4_sequence_res *res,
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int rpc_status)
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{
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nfs4_sequence_done(server, res, rpc_status);
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nfs4_sequence_free_slot(server->nfs_client, res);
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}
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static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
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{
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struct nfs_inode *nfsi = NFS_I(dir);
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@ -1350,8 +1333,8 @@ static void nfs4_open_done(struct rpc_task *task, void *calldata)
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data->rpc_status = task->tk_status;
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nfs4_sequence_done_free_slot(data->o_arg.server, &data->o_res.seq_res,
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task->tk_status);
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nfs4_sequence_done(data->o_arg.server, &data->o_res.seq_res,
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task->tk_status);
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if (RPC_ASSASSINATED(task))
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return;
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@ -1757,12 +1740,10 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
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break;
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default:
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if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
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nfs4_restart_rpc(task, server->nfs_client,
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&calldata->res.seq_res);
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nfs4_restart_rpc(task, server->nfs_client);
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return;
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}
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}
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nfs4_sequence_free_slot(server->nfs_client, &calldata->res.seq_res);
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nfs_refresh_inode(calldata->inode, calldata->res.fattr);
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}
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@ -2553,7 +2534,6 @@ static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
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nfs4_sequence_done(res->server, &res->seq_res, task->tk_status);
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if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
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return 0;
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nfs4_sequence_free_slot(res->server->nfs_client, &res->seq_res);
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update_changeattr(dir, &res->cinfo);
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nfs_post_op_update_inode(dir, &res->dir_attr);
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return 1;
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@ -2992,20 +2972,16 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
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dprintk("--> %s\n", __func__);
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/* nfs4_sequence_free_slot called in the read rpc_call_done */
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nfs4_sequence_done(server, &data->res.seq_res, task->tk_status);
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if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
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nfs4_restart_rpc(task, server->nfs_client, &data->res.seq_res);
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nfs4_restart_rpc(task, server->nfs_client);
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return -EAGAIN;
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}
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nfs_invalidate_atime(data->inode);
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if (task->tk_status > 0)
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renew_lease(server, data->timestamp);
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else if (task->tk_status < 0)
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nfs4_sequence_free_slot(server->nfs_client, &data->res.seq_res);
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return 0;
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}
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@ -3019,13 +2995,11 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
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{
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struct inode *inode = data->inode;
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/* slot is freed in nfs_writeback_done */
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nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res,
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task->tk_status);
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if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
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nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client,
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&data->res.seq_res);
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nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
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return -EAGAIN;
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}
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if (task->tk_status >= 0) {
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@ -3053,12 +3027,9 @@ static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
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nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res,
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task->tk_status);
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if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
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nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client,
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&data->res.seq_res);
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nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
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return -EAGAIN;
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}
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nfs4_sequence_free_slot(NFS_SERVER(inode)->nfs_client,
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&data->res.seq_res);
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nfs_refresh_inode(inode, data->res.fattr);
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return 0;
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}
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@ -3509,8 +3480,8 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
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{
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struct nfs4_delegreturndata *data = calldata;
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nfs4_sequence_done_free_slot(data->res.server, &data->res.seq_res,
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task->tk_status);
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nfs4_sequence_done(data->res.server, &data->res.seq_res,
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task->tk_status);
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data->rpc_status = task->tk_status;
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if (data->rpc_status == 0)
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@ -3768,11 +3739,8 @@ static void nfs4_locku_done(struct rpc_task *task, void *data)
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default:
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if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
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nfs4_restart_rpc(task,
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calldata->server->nfs_client,
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&calldata->res.seq_res);
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calldata->server->nfs_client);
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}
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nfs4_sequence_free_slot(calldata->server->nfs_client,
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&calldata->res.seq_res);
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}
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static void nfs4_locku_prepare(struct rpc_task *task, void *data)
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@ -3954,8 +3922,8 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata)
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dprintk("%s: begin!\n", __func__);
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nfs4_sequence_done_free_slot(data->server, &data->res.seq_res,
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task->tk_status);
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nfs4_sequence_done(data->server, &data->res.seq_res,
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task->tk_status);
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data->rpc_status = task->tk_status;
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if (RPC_ASSASSINATED(task))
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@ -4425,10 +4393,9 @@ static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
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dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
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rpc_delay(task, NFS4_POLL_RETRY_MIN);
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task->tk_status = 0;
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rpc_restart_call(task);
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nfs4_restart_rpc(task, data->clp);
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return;
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}
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nfs41_sequence_free_slot(data->clp, &data->res->lr_seq_res);
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dprintk("<-- %s\n", __func__);
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}
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@ -4900,11 +4867,10 @@ void nfs41_sequence_call_done(struct rpc_task *task, void *data)
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if (_nfs4_async_handle_error(task, NULL, clp, NULL)
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== -EAGAIN) {
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nfs4_restart_rpc(task, clp, task->tk_msg.rpc_resp);
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nfs4_restart_rpc(task, clp);
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return;
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}
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}
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nfs41_sequence_free_slot(clp, task->tk_msg.rpc_resp);
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dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
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kfree(task->tk_msg.rpc_argp);
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@ -5008,7 +4974,6 @@ static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
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return;
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}
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}
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nfs41_sequence_free_slot(clp, res);
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dprintk("<-- %s\n", __func__);
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}
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@ -356,26 +356,19 @@ static void nfs_readpage_retry(struct rpc_task *task, struct nfs_read_data *data
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struct nfs_readres *resp = &data->res;
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if (resp->eof || resp->count == argp->count)
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goto out;
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return;
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/* This is a short read! */
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nfs_inc_stats(data->inode, NFSIOS_SHORTREAD);
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/* Has the server at least made some progress? */
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if (resp->count == 0)
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goto out;
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return;
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/* Yes, so retry the read at the end of the data */
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argp->offset += resp->count;
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argp->pgbase += resp->count;
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argp->count -= resp->count;
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nfs4_restart_rpc(task, NFS_SERVER(data->inode)->nfs_client,
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&data->res.seq_res);
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return;
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out:
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nfs4_sequence_free_slot(NFS_SERVER(data->inode)->nfs_client,
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&data->res.seq_res);
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return;
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nfs4_restart_rpc(task, NFS_SERVER(data->inode)->nfs_client);
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}
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/*
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@ -81,11 +81,9 @@ static void nfs_async_unlink_done(struct rpc_task *task, void *calldata)
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{
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struct nfs_unlinkdata *data = calldata;
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struct inode *dir = data->dir;
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struct nfs_removeres *res = task->tk_msg.rpc_resp;
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if (!NFS_PROTO(dir)->unlink_done(task, dir))
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nfs4_restart_rpc(task, NFS_SERVER(dir)->nfs_client,
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&res->seq_res);
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nfs4_restart_rpc(task, NFS_SERVER(dir)->nfs_client);
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}
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/**
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@ -1216,8 +1216,7 @@ int nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
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*/
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argp->stable = NFS_FILE_SYNC;
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}
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nfs4_restart_rpc(task, server->nfs_client,
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&data->res.seq_res);
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nfs4_restart_rpc(task, server->nfs_client);
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return -EAGAIN;
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}
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if (time_before(complain, jiffies)) {
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@ -1229,7 +1228,6 @@ int nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
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/* Can't do anything about it except throw an error. */
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task->tk_status = -EIO;
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}
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nfs4_sequence_free_slot(server->nfs_client, &data->res.seq_res);
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return 0;
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}
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