diff options
Diffstat (limited to 'net')
-rw-r--r-- | net/sunrpc/clnt.c | 61 | ||||
-rw-r--r-- | net/sunrpc/sched.c | 51 | ||||
-rw-r--r-- | net/sunrpc/xprt.c | 9 | ||||
-rw-r--r-- | net/sunrpc/xprtmultipath.c | 4 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/backchannel.c | 2 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/frwr_ops.c | 20 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_backchannel.c | 4 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/transport.c | 3 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/verbs.c | 52 | ||||
-rw-r--r-- | net/sunrpc/xprtrdma/xprt_rdma.h | 10 | ||||
-rw-r--r-- | net/sunrpc/xprtsock.c | 5 |
11 files changed, 141 insertions, 80 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index c284efa3d1ef..993acf38af87 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -345,7 +345,7 @@ static int rpc_alloc_clid(struct rpc_clnt *clnt) { int clid; - clid = ida_simple_get(&rpc_clids, 0, 0, GFP_KERNEL); + clid = ida_alloc(&rpc_clids, GFP_KERNEL); if (clid < 0) return clid; clnt->cl_clid = clid; @@ -354,7 +354,7 @@ static int rpc_alloc_clid(struct rpc_clnt *clnt) static void rpc_free_clid(struct rpc_clnt *clnt) { - ida_simple_remove(&rpc_clids, clnt->cl_clid); + ida_free(&rpc_clids, clnt->cl_clid); } static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, @@ -873,6 +873,57 @@ void rpc_killall_tasks(struct rpc_clnt *clnt) } EXPORT_SYMBOL_GPL(rpc_killall_tasks); +/** + * rpc_cancel_tasks - try to cancel a set of RPC tasks + * @clnt: Pointer to RPC client + * @error: RPC task error value to set + * @fnmatch: Pointer to selector function + * @data: User data + * + * Uses @fnmatch to define a set of RPC tasks that are to be cancelled. + * The argument @error must be a negative error value. + */ +unsigned long rpc_cancel_tasks(struct rpc_clnt *clnt, int error, + bool (*fnmatch)(const struct rpc_task *, + const void *), + const void *data) +{ + struct rpc_task *task; + unsigned long count = 0; + + if (list_empty(&clnt->cl_tasks)) + return 0; + /* + * Spin lock all_tasks to prevent changes... + */ + spin_lock(&clnt->cl_lock); + list_for_each_entry(task, &clnt->cl_tasks, tk_task) { + if (!RPC_IS_ACTIVATED(task)) + continue; + if (!fnmatch(task, data)) + continue; + rpc_task_try_cancel(task, error); + count++; + } + spin_unlock(&clnt->cl_lock); + return count; +} +EXPORT_SYMBOL_GPL(rpc_cancel_tasks); + +static int rpc_clnt_disconnect_xprt(struct rpc_clnt *clnt, + struct rpc_xprt *xprt, void *dummy) +{ + if (xprt_connected(xprt)) + xprt_force_disconnect(xprt); + return 0; +} + +void rpc_clnt_disconnect(struct rpc_clnt *clnt) +{ + rpc_clnt_iterate_for_each_xprt(clnt, rpc_clnt_disconnect_xprt, NULL); +} +EXPORT_SYMBOL_GPL(rpc_clnt_disconnect); + /* * Properly shut down an RPC client, terminating all outstanding * requests. @@ -1642,7 +1693,7 @@ static void __rpc_call_rpcerror(struct rpc_task *task, int tk_status, int rpc_status) { trace_rpc_call_rpcerror(task, tk_status, rpc_status); - task->tk_rpc_status = rpc_status; + rpc_task_set_rpc_status(task, rpc_status); rpc_exit(task, tk_status); } @@ -2435,10 +2486,8 @@ rpc_check_timeout(struct rpc_task *task) { struct rpc_clnt *clnt = task->tk_client; - if (RPC_SIGNALLED(task)) { - rpc_call_rpcerror(task, -ERESTARTSYS); + if (RPC_SIGNALLED(task)) return; - } if (xprt_adjust_timeout(task->tk_rqstp) == 0) return; diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index 46cbf151a50b..be587a308e05 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -65,6 +65,13 @@ gfp_t rpc_task_gfp_mask(void) } EXPORT_SYMBOL_GPL(rpc_task_gfp_mask); +bool rpc_task_set_rpc_status(struct rpc_task *task, int rpc_status) +{ + if (cmpxchg(&task->tk_rpc_status, 0, rpc_status) == 0) + return true; + return false; +} + unsigned long rpc_task_timeout(const struct rpc_task *task) { @@ -853,12 +860,25 @@ void rpc_signal_task(struct rpc_task *task) if (!RPC_IS_ACTIVATED(task)) return; + if (!rpc_task_set_rpc_status(task, -ERESTARTSYS)) + return; trace_rpc_task_signalled(task, task->tk_action); set_bit(RPC_TASK_SIGNALLED, &task->tk_runstate); smp_mb__after_atomic(); queue = READ_ONCE(task->tk_waitqueue); if (queue) - rpc_wake_up_queued_task_set_status(queue, task, -ERESTARTSYS); + rpc_wake_up_queued_task(queue, task); +} + +void rpc_task_try_cancel(struct rpc_task *task, int error) +{ + struct rpc_wait_queue *queue; + + if (!rpc_task_set_rpc_status(task, error)) + return; + queue = READ_ONCE(task->tk_waitqueue); + if (queue) + rpc_wake_up_queued_task(queue, task); } void rpc_exit(struct rpc_task *task, int status) @@ -905,10 +925,16 @@ static void __rpc_execute(struct rpc_task *task) * Perform the next FSM step or a pending callback. * * tk_action may be NULL if the task has been killed. - * In particular, note that rpc_killall_tasks may - * do this at any time, so beware when dereferencing. */ do_action = task->tk_action; + /* Tasks with an RPC error status should exit */ + if (do_action != rpc_exit_task && + (status = READ_ONCE(task->tk_rpc_status)) != 0) { + task->tk_status = status; + if (do_action != NULL) + do_action = rpc_exit_task; + } + /* Callbacks override all actions */ if (task->tk_callback) { do_action = task->tk_callback; task->tk_callback = NULL; @@ -931,14 +957,6 @@ static void __rpc_execute(struct rpc_task *task) } /* - * Signalled tasks should exit rather than sleep. - */ - if (RPC_SIGNALLED(task)) { - task->tk_rpc_status = -ERESTARTSYS; - rpc_exit(task, -ERESTARTSYS); - } - - /* * The queue->lock protects against races with * rpc_make_runnable(). * @@ -953,6 +971,12 @@ static void __rpc_execute(struct rpc_task *task) spin_unlock(&queue->lock); continue; } + /* Wake up any task that has an exit status */ + if (READ_ONCE(task->tk_rpc_status) != 0) { + rpc_wake_up_task_queue_locked(queue, task); + spin_unlock(&queue->lock); + continue; + } rpc_clear_running(task); spin_unlock(&queue->lock); if (task_is_async) @@ -970,10 +994,7 @@ static void __rpc_execute(struct rpc_task *task) * clean up after sleeping on some queue, we don't * break the loop here, but go around once more. */ - trace_rpc_task_signalled(task, task->tk_action); - set_bit(RPC_TASK_SIGNALLED, &task->tk_runstate); - task->tk_rpc_status = -ERESTARTSYS; - rpc_exit(task, -ERESTARTSYS); + rpc_signal_task(task); } trace_rpc_task_sync_wake(task, task->tk_action); } diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index f8fae7815649..71dc26373444 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -1788,7 +1788,7 @@ static int xprt_alloc_id(struct rpc_xprt *xprt) { int id; - id = ida_simple_get(&rpc_xprt_ids, 0, 0, GFP_KERNEL); + id = ida_alloc(&rpc_xprt_ids, GFP_KERNEL); if (id < 0) return id; @@ -1798,7 +1798,7 @@ static int xprt_alloc_id(struct rpc_xprt *xprt) static void xprt_free_id(struct rpc_xprt *xprt) { - ida_simple_remove(&rpc_xprt_ids, xprt->id); + ida_free(&rpc_xprt_ids, xprt->id); } struct rpc_xprt *xprt_alloc(struct net *net, size_t size, @@ -1822,10 +1822,7 @@ struct rpc_xprt *xprt_alloc(struct net *net, size_t size, goto out_free; list_add(&req->rq_list, &xprt->free); } - if (max_alloc > num_prealloc) - xprt->max_reqs = max_alloc; - else - xprt->max_reqs = num_prealloc; + xprt->max_reqs = max_t(unsigned int, max_alloc, num_prealloc); xprt->min_reqs = num_prealloc; xprt->num_reqs = num_prealloc; diff --git a/net/sunrpc/xprtmultipath.c b/net/sunrpc/xprtmultipath.c index 685db598acbe..701250b305db 100644 --- a/net/sunrpc/xprtmultipath.c +++ b/net/sunrpc/xprtmultipath.c @@ -103,7 +103,7 @@ static int xprt_switch_alloc_id(struct rpc_xprt_switch *xps, gfp_t gfp_flags) { int id; - id = ida_simple_get(&rpc_xprtswitch_ids, 0, 0, gfp_flags); + id = ida_alloc(&rpc_xprtswitch_ids, gfp_flags); if (id < 0) return id; @@ -113,7 +113,7 @@ static int xprt_switch_alloc_id(struct rpc_xprt_switch *xps, gfp_t gfp_flags) static void xprt_switch_free_id(struct rpc_xprt_switch *xps) { - ida_simple_remove(&rpc_xprtswitch_ids, xps->xps_id); + ida_free(&rpc_xprtswitch_ids, xps->xps_id); } /** diff --git a/net/sunrpc/xprtrdma/backchannel.c b/net/sunrpc/xprtrdma/backchannel.c index faba7136dd9a..e4d84a13c566 100644 --- a/net/sunrpc/xprtrdma/backchannel.c +++ b/net/sunrpc/xprtrdma/backchannel.c @@ -189,7 +189,7 @@ create_req: return NULL; size = min_t(size_t, r_xprt->rx_ep->re_inline_recv, PAGE_SIZE); - req = rpcrdma_req_create(r_xprt, size, GFP_KERNEL); + req = rpcrdma_req_create(r_xprt, size); if (!req) return NULL; if (rpcrdma_req_setup(r_xprt, req)) { diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c index de0bdb6b729f..ffbf99894970 100644 --- a/net/sunrpc/xprtrdma/frwr_ops.c +++ b/net/sunrpc/xprtrdma/frwr_ops.c @@ -124,16 +124,16 @@ int frwr_mr_init(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr *mr) unsigned int depth = ep->re_max_fr_depth; struct scatterlist *sg; struct ib_mr *frmr; - int rc; + + sg = kcalloc_node(depth, sizeof(*sg), XPRTRDMA_GFP_FLAGS, + ibdev_to_node(ep->re_id->device)); + if (!sg) + return -ENOMEM; frmr = ib_alloc_mr(ep->re_pd, ep->re_mrtype, depth); if (IS_ERR(frmr)) goto out_mr_err; - sg = kmalloc_array(depth, sizeof(*sg), GFP_KERNEL); - if (!sg) - goto out_list_err; - mr->mr_xprt = r_xprt; mr->mr_ibmr = frmr; mr->mr_device = NULL; @@ -146,13 +146,9 @@ int frwr_mr_init(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr *mr) return 0; out_mr_err: - rc = PTR_ERR(frmr); - trace_xprtrdma_frwr_alloc(mr, rc); - return rc; - -out_list_err: - ib_dereg_mr(frmr); - return -ENOMEM; + kfree(sg); + trace_xprtrdma_frwr_alloc(mr, PTR_ERR(frmr)); + return PTR_ERR(frmr); } /** diff --git a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c index 85c8cdda98b1..aa2227a7e552 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c +++ b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c @@ -119,12 +119,12 @@ xprt_rdma_bc_allocate(struct rpc_task *task) return -EINVAL; } - page = alloc_page(RPCRDMA_DEF_GFP); + page = alloc_page(GFP_NOIO | __GFP_NOWARN); if (!page) return -ENOMEM; rqst->rq_buffer = page_address(page); - rqst->rq_rbuffer = kmalloc(rqst->rq_rcvsize, RPCRDMA_DEF_GFP); + rqst->rq_rbuffer = kmalloc(rqst->rq_rcvsize, GFP_NOIO | __GFP_NOWARN); if (!rqst->rq_rbuffer) { put_page(page); return -ENOMEM; diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c index bcb37b51adf6..10bb2b929c6d 100644 --- a/net/sunrpc/xprtrdma/transport.c +++ b/net/sunrpc/xprtrdma/transport.c @@ -494,8 +494,7 @@ xprt_rdma_connect(struct rpc_xprt *xprt, struct rpc_task *task) xprt_reconnect_backoff(xprt, RPCRDMA_INIT_REEST_TO); } trace_xprtrdma_op_connect(r_xprt, delay); - queue_delayed_work(xprtiod_workqueue, &r_xprt->rx_connect_worker, - delay); + queue_delayed_work(system_long_wq, &r_xprt->rx_connect_worker, delay); } /** diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index 2fbe9aaeec34..44b87e4274b4 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -76,8 +76,7 @@ static void rpcrdma_mrs_destroy(struct rpcrdma_xprt *r_xprt); static void rpcrdma_ep_get(struct rpcrdma_ep *ep); static int rpcrdma_ep_put(struct rpcrdma_ep *ep); static struct rpcrdma_regbuf * -rpcrdma_regbuf_alloc(size_t size, enum dma_data_direction direction, - gfp_t flags); +rpcrdma_regbuf_alloc(size_t size, enum dma_data_direction direction); static void rpcrdma_regbuf_dma_unmap(struct rpcrdma_regbuf *rb); static void rpcrdma_regbuf_free(struct rpcrdma_regbuf *rb); @@ -373,7 +372,7 @@ static int rpcrdma_ep_create(struct rpcrdma_xprt *r_xprt) struct rpcrdma_ep *ep; int rc; - ep = kzalloc(sizeof(*ep), GFP_KERNEL); + ep = kzalloc(sizeof(*ep), XPRTRDMA_GFP_FLAGS); if (!ep) return -ENOTCONN; ep->re_xprt = &r_xprt->rx_xprt; @@ -606,7 +605,7 @@ static struct rpcrdma_sendctx *rpcrdma_sendctx_create(struct rpcrdma_ep *ep) struct rpcrdma_sendctx *sc; sc = kzalloc(struct_size(sc, sc_sges, ep->re_attr.cap.max_send_sge), - GFP_KERNEL); + XPRTRDMA_GFP_FLAGS); if (!sc) return NULL; @@ -629,7 +628,7 @@ static int rpcrdma_sendctxs_create(struct rpcrdma_xprt *r_xprt) * Sends are posted. */ i = r_xprt->rx_ep->re_max_requests + RPCRDMA_MAX_BC_REQUESTS; - buf->rb_sc_ctxs = kcalloc(i, sizeof(sc), GFP_KERNEL); + buf->rb_sc_ctxs = kcalloc(i, sizeof(sc), XPRTRDMA_GFP_FLAGS); if (!buf->rb_sc_ctxs) return -ENOMEM; @@ -740,13 +739,16 @@ rpcrdma_mrs_create(struct rpcrdma_xprt *r_xprt) { struct rpcrdma_buffer *buf = &r_xprt->rx_buf; struct rpcrdma_ep *ep = r_xprt->rx_ep; + struct ib_device *device = ep->re_id->device; unsigned int count; + /* Try to allocate enough to perform one full-sized I/O */ for (count = 0; count < ep->re_max_rdma_segs; count++) { struct rpcrdma_mr *mr; int rc; - mr = kzalloc(sizeof(*mr), GFP_KERNEL); + mr = kzalloc_node(sizeof(*mr), XPRTRDMA_GFP_FLAGS, + ibdev_to_node(device)); if (!mr) break; @@ -791,38 +793,33 @@ void rpcrdma_mrs_refresh(struct rpcrdma_xprt *r_xprt) /* If there is no underlying connection, it's no use * to wake the refresh worker. */ - if (ep->re_connect_status == 1) { - /* The work is scheduled on a WQ_MEM_RECLAIM - * workqueue in order to prevent MR allocation - * from recursing into NFS during direct reclaim. - */ - queue_work(xprtiod_workqueue, &buf->rb_refresh_worker); - } + if (ep->re_connect_status != 1) + return; + queue_work(system_highpri_wq, &buf->rb_refresh_worker); } /** * rpcrdma_req_create - Allocate an rpcrdma_req object * @r_xprt: controlling r_xprt * @size: initial size, in bytes, of send and receive buffers - * @flags: GFP flags passed to memory allocators * * Returns an allocated and fully initialized rpcrdma_req or NULL. */ -struct rpcrdma_req *rpcrdma_req_create(struct rpcrdma_xprt *r_xprt, size_t size, - gfp_t flags) +struct rpcrdma_req *rpcrdma_req_create(struct rpcrdma_xprt *r_xprt, + size_t size) { struct rpcrdma_buffer *buffer = &r_xprt->rx_buf; struct rpcrdma_req *req; - req = kzalloc(sizeof(*req), flags); + req = kzalloc(sizeof(*req), XPRTRDMA_GFP_FLAGS); if (req == NULL) goto out1; - req->rl_sendbuf = rpcrdma_regbuf_alloc(size, DMA_TO_DEVICE, flags); + req->rl_sendbuf = rpcrdma_regbuf_alloc(size, DMA_TO_DEVICE); if (!req->rl_sendbuf) goto out2; - req->rl_recvbuf = rpcrdma_regbuf_alloc(size, DMA_NONE, flags); + req->rl_recvbuf = rpcrdma_regbuf_alloc(size, DMA_NONE); if (!req->rl_recvbuf) goto out3; @@ -858,7 +855,7 @@ int rpcrdma_req_setup(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req) r_xprt->rx_ep->re_max_rdma_segs * rpcrdma_readchunk_maxsz; maxhdrsize *= sizeof(__be32); rb = rpcrdma_regbuf_alloc(__roundup_pow_of_two(maxhdrsize), - DMA_TO_DEVICE, GFP_KERNEL); + DMA_TO_DEVICE); if (!rb) goto out; @@ -929,12 +926,12 @@ struct rpcrdma_rep *rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt, struct rpcrdma_buffer *buf = &r_xprt->rx_buf; struct rpcrdma_rep *rep; - rep = kzalloc(sizeof(*rep), GFP_KERNEL); + rep = kzalloc(sizeof(*rep), XPRTRDMA_GFP_FLAGS); if (rep == NULL) goto out; rep->rr_rdmabuf = rpcrdma_regbuf_alloc(r_xprt->rx_ep->re_inline_recv, - DMA_FROM_DEVICE, GFP_KERNEL); + DMA_FROM_DEVICE); if (!rep->rr_rdmabuf) goto out_free; @@ -1064,8 +1061,8 @@ int rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt) for (i = 0; i < r_xprt->rx_xprt.max_reqs; i++) { struct rpcrdma_req *req; - req = rpcrdma_req_create(r_xprt, RPCRDMA_V1_DEF_INLINE_SIZE * 2, - GFP_KERNEL); + req = rpcrdma_req_create(r_xprt, + RPCRDMA_V1_DEF_INLINE_SIZE * 2); if (!req) goto out; list_add(&req->rl_list, &buf->rb_send_bufs); @@ -1235,15 +1232,14 @@ void rpcrdma_buffer_put(struct rpcrdma_buffer *buffers, struct rpcrdma_req *req) * or Replies they may be registered externally via frwr_map. */ static struct rpcrdma_regbuf * -rpcrdma_regbuf_alloc(size_t size, enum dma_data_direction direction, - gfp_t flags) +rpcrdma_regbuf_alloc(size_t size, enum dma_data_direction direction) { struct rpcrdma_regbuf *rb; - rb = kmalloc(sizeof(*rb), flags); + rb = kmalloc(sizeof(*rb), XPRTRDMA_GFP_FLAGS); if (!rb) return NULL; - rb->rg_data = kmalloc(size, flags); + rb->rg_data = kmalloc(size, XPRTRDMA_GFP_FLAGS); if (!rb->rg_data) { kfree(rb); return NULL; diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index c79f92eeda76..5e5ff6784ef5 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -149,7 +149,11 @@ static inline void *rdmab_data(const struct rpcrdma_regbuf *rb) return rb->rg_data; } -#define RPCRDMA_DEF_GFP (GFP_NOIO | __GFP_NOWARN) +/* Do not use emergency memory reserves, and fail quickly if memory + * cannot be allocated easily. These flags may be used wherever there + * is robust logic to handle a failure to allocate. + */ +#define XPRTRDMA_GFP_FLAGS (__GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN) /* To ensure a transport can always make forward progress, * the number of RDMA segments allowed in header chunk lists @@ -467,8 +471,8 @@ void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, int needed, bool temp); /* * Buffer calls - xprtrdma/verbs.c */ -struct rpcrdma_req *rpcrdma_req_create(struct rpcrdma_xprt *r_xprt, size_t size, - gfp_t flags); +struct rpcrdma_req *rpcrdma_req_create(struct rpcrdma_xprt *r_xprt, + size_t size); int rpcrdma_req_setup(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req); void rpcrdma_req_destroy(struct rpcrdma_req *req); int rpcrdma_buffer_create(struct rpcrdma_xprt *); diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index e976007f4fd0..f34d5427b66c 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -261,7 +261,7 @@ static void xs_format_common_peer_addresses(struct rpc_xprt *xprt) switch (sap->sa_family) { case AF_LOCAL: sun = xs_addr_un(xprt); - strlcpy(buf, sun->sun_path, sizeof(buf)); + strscpy(buf, sun->sun_path, sizeof(buf)); xprt->address_strings[RPC_DISPLAY_ADDR] = kstrdup(buf, GFP_KERNEL); break; @@ -1978,8 +1978,7 @@ static void xs_local_connect(struct rpc_xprt *xprt, struct rpc_task *task) * we'll need to figure out how to pass a namespace to * connect. */ - task->tk_rpc_status = -ENOTCONN; - rpc_exit(task, -ENOTCONN); + rpc_task_set_rpc_status(task, -ENOTCONN); goto out_wake; } ret = xs_local_setup_socket(transport); |