From: Chuck Lever Date: Mon, 12 Jun 2023 14:13:45 +0000 (-0400) Subject: svcrdma: Convert "might sleep" comment into a code annotation X-Git-Tag: v6.5-rc1~242^2~10 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=91f8ce28466e480fd9ef27e028ac89dbfd264c24;p=thirdparty%2Flinux.git svcrdma: Convert "might sleep" comment into a code annotation Try to catch incorrect calling contexts mechanically rather than by code review. Reviewed-by: Jeff Layton Acked-by: Tom Talpey Signed-off-by: Chuck Lever --- diff --git a/net/sunrpc/xprtrdma/svc_rdma_rw.c b/net/sunrpc/xprtrdma/svc_rdma_rw.c index 068c365e7812e..59ea87b5f458c 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_rw.c +++ b/net/sunrpc/xprtrdma/svc_rdma_rw.c @@ -353,8 +353,7 @@ static void svc_rdma_wc_read_done(struct ib_cq *cq, struct ib_wc *wc) return; } -/* This function sleeps when the transport's Send Queue is congested. - * +/* * Assumptions: * - If ib_post_send() succeeds, only one completion is expected, * even if one or more WRs are flushed. This is true when posting @@ -369,6 +368,8 @@ static int svc_rdma_post_chunk_ctxt(struct svc_rdma_chunk_ctxt *cc) struct ib_cqe *cqe; int ret; + might_sleep(); + if (cc->cc_sqecount > rdma->sc_sq_depth) return -EINVAL; diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c index 24228f3611e87..c6644cca52c57 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c +++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c @@ -315,6 +315,8 @@ int svc_rdma_send(struct svcxprt_rdma *rdma, struct svc_rdma_send_ctxt *ctxt) struct ib_send_wr *wr = &ctxt->sc_send_wr; int ret; + might_sleep(); + /* Sync the transport header buffer */ ib_dma_sync_single_for_device(rdma->sc_pd->device, wr->sg_list[0].addr,