From 963d8fe53339128ee46a7701f2e36305f0ccff8c Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 3 Jan 2006 09:55:04 +0100 Subject: RPC: Clean up RPC task structure Shrink the RPC task structure. Instead of storing separate pointers for task->tk_exit and task->tk_release, put them in a structure. Also pass the user data pointer as a parameter instead of passing it via task->tk_calldata. This enables us to nest callbacks. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 107 +++++++++++++++++++++++++++++++----------------------- 1 file changed, 62 insertions(+), 45 deletions(-) (limited to 'fs/nfs/nfs4proc.c') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f988a9417b13..3d5d3c07d621 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -196,14 +196,12 @@ static void update_changeattr(struct inode *inode, struct nfs4_change_info *cinf /* Helper for asynchronous RPC calls */ static int nfs4_call_async(struct rpc_clnt *clnt, rpc_action tk_begin, - rpc_action tk_exit, void *calldata) + const struct rpc_call_ops *tk_ops, void *calldata) { struct rpc_task *task; - if (!(task = rpc_new_task(clnt, tk_exit, RPC_TASK_ASYNC))) + if (!(task = rpc_new_task(clnt, RPC_TASK_ASYNC, tk_ops, calldata))) return -ENOMEM; - - task->tk_calldata = calldata; task->tk_action = tk_begin; rpc_execute(task); return 0; @@ -867,10 +865,10 @@ struct nfs4_closedata { struct nfs_fattr fattr; }; -static void nfs4_free_closedata(struct nfs4_closedata *calldata) +static void nfs4_free_closedata(void *data) { - struct nfs4_state *state = calldata->state; - struct nfs4_state_owner *sp = state->owner; + struct nfs4_closedata *calldata = data; + struct nfs4_state_owner *sp = calldata->state->owner; nfs4_put_open_state(calldata->state); nfs_free_seqid(calldata->arg.seqid); @@ -878,9 +876,9 @@ static void nfs4_free_closedata(struct nfs4_closedata *calldata) kfree(calldata); } -static void nfs4_close_done(struct rpc_task *task) +static void nfs4_close_done(struct rpc_task *task, void *data) { - struct nfs4_closedata *calldata = (struct nfs4_closedata *)task->tk_calldata; + struct nfs4_closedata *calldata = data; struct nfs4_state *state = calldata->state; struct nfs_server *server = NFS_SERVER(calldata->inode); @@ -904,7 +902,6 @@ static void nfs4_close_done(struct rpc_task *task) } } nfs_refresh_inode(calldata->inode, calldata->res.fattr); - nfs4_free_closedata(calldata); } static void nfs4_close_begin(struct rpc_task *task) @@ -918,10 +915,8 @@ static void nfs4_close_begin(struct rpc_task *task) .rpc_cred = state->owner->so_cred, }; int mode = 0, old_mode; - int status; - status = nfs_wait_on_sequence(calldata->arg.seqid, task); - if (status != 0) + if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) return; /* Recalculate the new open mode in case someone reopened the file * while we were waiting in line to be scheduled. @@ -937,9 +932,8 @@ static void nfs4_close_begin(struct rpc_task *task) spin_unlock(&calldata->inode->i_lock); spin_unlock(&state->owner->so_lock); if (mode == old_mode || test_bit(NFS_DELEGATED_STATE, &state->flags)) { - nfs4_free_closedata(calldata); - task->tk_exit = NULL; - rpc_exit(task, 0); + /* Note: exit _without_ calling nfs4_close_done */ + task->tk_action = NULL; return; } nfs_fattr_init(calldata->res.fattr); @@ -949,6 +943,11 @@ static void nfs4_close_begin(struct rpc_task *task) rpc_call_setup(task, &msg, 0); } +static const struct rpc_call_ops nfs4_close_ops = { + .rpc_call_done = nfs4_close_done, + .rpc_release = nfs4_free_closedata, +}; + /* * It is possible for data to be read/written from a mem-mapped file * after the sys_close call (which hits the vfs layer as a flush). @@ -982,7 +981,7 @@ int nfs4_do_close(struct inode *inode, struct nfs4_state *state) calldata->res.server = server; status = nfs4_call_async(server->client, nfs4_close_begin, - nfs4_close_done, calldata); + &nfs4_close_ops, calldata); if (status == 0) goto out; @@ -2125,10 +2124,9 @@ static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, return err; } -static void -nfs4_read_done(struct rpc_task *task) +static void nfs4_read_done(struct rpc_task *task, void *calldata) { - struct nfs_read_data *data = (struct nfs_read_data *) task->tk_calldata; + struct nfs_read_data *data = calldata; struct inode *inode = data->inode; if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { @@ -2138,9 +2136,14 @@ nfs4_read_done(struct rpc_task *task) if (task->tk_status > 0) renew_lease(NFS_SERVER(inode), data->timestamp); /* Call back common NFS readpage processing */ - nfs_readpage_result(task); + nfs_readpage_result(task, calldata); } +static const struct rpc_call_ops nfs4_read_ops = { + .rpc_call_done = nfs4_read_done, + .rpc_release = nfs_readdata_release, +}; + static void nfs4_proc_read_setup(struct nfs_read_data *data) { @@ -2160,14 +2163,13 @@ nfs4_proc_read_setup(struct nfs_read_data *data) flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0); /* Finalize the task. */ - rpc_init_task(task, NFS_CLIENT(inode), nfs4_read_done, flags); + rpc_init_task(task, NFS_CLIENT(inode), flags, &nfs4_read_ops, data); rpc_call_setup(task, &msg, 0); } -static void -nfs4_write_done(struct rpc_task *task) +static void nfs4_write_done(struct rpc_task *task, void *calldata) { - struct nfs_write_data *data = (struct nfs_write_data *) task->tk_calldata; + struct nfs_write_data *data = calldata; struct inode *inode = data->inode; if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { @@ -2179,9 +2181,14 @@ nfs4_write_done(struct rpc_task *task) nfs_post_op_update_inode(inode, data->res.fattr); } /* Call back common NFS writeback processing */ - nfs_writeback_done(task); + nfs_writeback_done(task, calldata); } +static const struct rpc_call_ops nfs4_write_ops = { + .rpc_call_done = nfs4_write_done, + .rpc_release = nfs_writedata_release, +}; + static void nfs4_proc_write_setup(struct nfs_write_data *data, int how) { @@ -2214,14 +2221,13 @@ nfs4_proc_write_setup(struct nfs_write_data *data, int how) flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; /* Finalize the task. */ - rpc_init_task(task, NFS_CLIENT(inode), nfs4_write_done, flags); + rpc_init_task(task, NFS_CLIENT(inode), flags, &nfs4_write_ops, data); rpc_call_setup(task, &msg, 0); } -static void -nfs4_commit_done(struct rpc_task *task) +static void nfs4_commit_done(struct rpc_task *task, void *calldata) { - struct nfs_write_data *data = (struct nfs_write_data *) task->tk_calldata; + struct nfs_write_data *data = calldata; struct inode *inode = data->inode; if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { @@ -2231,9 +2237,14 @@ nfs4_commit_done(struct rpc_task *task) if (task->tk_status >= 0) nfs_post_op_update_inode(inode, data->res.fattr); /* Call back common NFS writeback processing */ - nfs_commit_done(task); + nfs_commit_done(task, calldata); } +static const struct rpc_call_ops nfs4_commit_ops = { + .rpc_call_done = nfs4_commit_done, + .rpc_release = nfs_commit_release, +}; + static void nfs4_proc_commit_setup(struct nfs_write_data *data, int how) { @@ -2255,7 +2266,7 @@ nfs4_proc_commit_setup(struct nfs_write_data *data, int how) flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; /* Finalize the task. */ - rpc_init_task(task, NFS_CLIENT(inode), nfs4_commit_done, flags); + rpc_init_task(task, NFS_CLIENT(inode), flags, &nfs4_commit_ops, data); rpc_call_setup(task, &msg, 0); } @@ -2263,11 +2274,10 @@ nfs4_proc_commit_setup(struct nfs_write_data *data, int how) * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special * standalone procedure for queueing an asynchronous RENEW. */ -static void -renew_done(struct rpc_task *task) +static void nfs4_renew_done(struct rpc_task *task, void *data) { struct nfs4_client *clp = (struct nfs4_client *)task->tk_msg.rpc_argp; - unsigned long timestamp = (unsigned long)task->tk_calldata; + unsigned long timestamp = (unsigned long)data; if (task->tk_status < 0) { switch (task->tk_status) { @@ -2284,6 +2294,10 @@ renew_done(struct rpc_task *task) spin_unlock(&clp->cl_lock); } +static const struct rpc_call_ops nfs4_renew_ops = { + .rpc_call_done = nfs4_renew_done, +}; + int nfs4_proc_async_renew(struct nfs4_client *clp) { @@ -2294,7 +2308,7 @@ nfs4_proc_async_renew(struct nfs4_client *clp) }; return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, - renew_done, (void *)jiffies); + &nfs4_renew_ops, (void *)jiffies); } int @@ -2866,15 +2880,16 @@ static void nfs4_locku_release_calldata(struct nfs4_unlockdata *calldata) } } -static void nfs4_locku_complete(struct nfs4_unlockdata *calldata) +static void nfs4_locku_complete(void *data) { + struct nfs4_unlockdata *calldata = data; complete(&calldata->completion); nfs4_locku_release_calldata(calldata); } -static void nfs4_locku_done(struct rpc_task *task) +static void nfs4_locku_done(struct rpc_task *task, void *data) { - struct nfs4_unlockdata *calldata = (struct nfs4_unlockdata *)task->tk_calldata; + struct nfs4_unlockdata *calldata = data; nfs_increment_lock_seqid(task->tk_status, calldata->luargs.seqid); switch (task->tk_status) { @@ -2890,10 +2905,8 @@ static void nfs4_locku_done(struct rpc_task *task) default: if (nfs4_async_handle_error(task, calldata->res.server) == -EAGAIN) { rpc_restart_call(task); - return; } } - nfs4_locku_complete(calldata); } static void nfs4_locku_begin(struct rpc_task *task) @@ -2911,14 +2924,18 @@ static void nfs4_locku_begin(struct rpc_task *task) if (status != 0) return; if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { - nfs4_locku_complete(calldata); - task->tk_exit = NULL; - rpc_exit(task, 0); + /* Note: exit _without_ running nfs4_locku_done */ + task->tk_action = NULL; return; } rpc_call_setup(task, &msg, 0); } +static const struct rpc_call_ops nfs4_locku_ops = { + .rpc_call_done = nfs4_locku_done, + .rpc_release = nfs4_locku_complete, +}; + static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) { struct nfs4_unlockdata *calldata; @@ -2963,7 +2980,7 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock * init_completion(&calldata->completion); status = nfs4_call_async(NFS_SERVER(inode)->client, nfs4_locku_begin, - nfs4_locku_done, calldata); + &nfs4_locku_ops, calldata); if (status == 0) wait_for_completion_interruptible(&calldata->completion); do_vfs_lock(request->fl_file, request); -- cgit v1.2.3