diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/9p/trans_fd.c | 68 |
1 files changed, 22 insertions, 46 deletions
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c index 334d39cc5ba..dbb057d7fa5 100644 --- a/net/9p/trans_fd.c +++ b/net/9p/trans_fd.c @@ -119,6 +119,8 @@ typedef void (*p9_conn_req_callback)(struct p9_req *req, void *a); * @cba: argument to pass to callback * @flush: flag to indicate RPC has been flushed * @req_list: list link for higher level objects to chain requests + * @m: connection this request was issued on + * @wqueue: wait queue that client is blocked on for this rpc * */ @@ -132,6 +134,8 @@ struct p9_req { void *cba; int flush; struct list_head req_list; + struct p9_conn *m; + wait_queue_head_t wqueue; }; struct p9_poll_wait { @@ -186,25 +190,6 @@ struct p9_conn { unsigned long wsched; }; -/** - * struct p9_mux_rpc - fd mux rpc accounting structure - * @m: connection this request was issued on - * @err: error state - * @tcall: request &p9_fcall - * @rcall: response &p9_fcall - * @wqueue: wait queue that client is blocked on for this rpc - * - * Bug: isn't this information duplicated elsewhere like &p9_req - */ - -struct p9_mux_rpc { - struct p9_conn *m; - int err; - struct p9_fcall *tcall; - struct p9_fcall *rcall; - wait_queue_head_t wqueue; -}; - static DEFINE_SPINLOCK(p9_poll_lock); static LIST_HEAD(p9_poll_pending_list); static struct workqueue_struct *p9_mux_wq; @@ -844,6 +829,8 @@ static struct p9_req *p9_send_request(struct p9_conn *m, #endif spin_lock_init(&req->lock); + req->m = m; + init_waitqueue_head(&req->wqueue); req->tag = n; req->tcall = tc; req->rcall = NULL; @@ -954,20 +941,14 @@ p9_mux_flush_request(struct p9_conn *m, struct p9_req *req) return 1; } -static void -p9_conn_rpc_cb(struct p9_req *req, void *a) +static void p9_conn_rpc_cb(struct p9_req *req, void *a) { - struct p9_mux_rpc *r; - - P9_DPRINTK(P9_DEBUG_MUX, "req %p r %p\n", req, a); - r = a; - r->rcall = req->rcall; - r->err = req->err; + P9_DPRINTK(P9_DEBUG_MUX, "req %p arg %p\n", req, a); if (req->flush != None && !req->err) - r->err = -ERESTARTSYS; + req->err = -ERESTARTSYS; - wake_up(&r->wqueue); + wake_up(&req->wqueue); } /** @@ -987,13 +968,6 @@ p9_fd_rpc(struct p9_client *client, struct p9_fcall *tc, struct p9_fcall **rc) int err, sigpending; unsigned long flags; struct p9_req *req; - struct p9_mux_rpc r; - - r.err = 0; - r.tcall = tc; - r.rcall = NULL; - r.m = m; - init_waitqueue_head(&r.wqueue); if (rc) *rc = NULL; @@ -1004,16 +978,17 @@ p9_fd_rpc(struct p9_client *client, struct p9_fcall *tc, struct p9_fcall **rc) clear_thread_flag(TIF_SIGPENDING); } - req = p9_send_request(m, tc, p9_conn_rpc_cb, &r); + req = p9_send_request(m, tc, p9_conn_rpc_cb, NULL); if (IS_ERR(req)) { err = PTR_ERR(req); P9_DPRINTK(P9_DEBUG_MUX, "error %d\n", err); return err; } - err = wait_event_interruptible(r.wqueue, r.rcall != NULL || r.err < 0); - if (r.err < 0) - err = r.err; + err = wait_event_interruptible(req->wqueue, req->rcall != NULL || + req->err < 0); + if (req->err < 0) + err = req->err; if (err == -ERESTARTSYS && client->status == Connected && m->err == 0) { @@ -1021,10 +996,11 @@ p9_fd_rpc(struct p9_client *client, struct p9_fcall *tc, struct p9_fcall **rc) /* wait until we get response of the flush message */ do { clear_thread_flag(TIF_SIGPENDING); - err = wait_event_interruptible(r.wqueue, - r.rcall || r.err); - } while (!r.rcall && !r.err && err == -ERESTARTSYS && - client->status == Connected && !m->err); + err = wait_event_interruptible(req->wqueue, + req->rcall || req->err); + } while (!req->rcall && !req->err && + err == -ERESTARTSYS && + client->status == Connected && !m->err); err = -ERESTARTSYS; } @@ -1038,9 +1014,9 @@ p9_fd_rpc(struct p9_client *client, struct p9_fcall *tc, struct p9_fcall **rc) } if (rc) - *rc = r.rcall; + *rc = req->rcall; else - kfree(r.rcall); + kfree(req->rcall); p9_mux_free_request(m, req); if (err > 0) |