From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Simmons Date: Mon, 25 May 2020 18:07:44 -0400 Subject: [lustre-devel] [PATCH 07/45] lnet: remove msg_iov from lnet_msg. In-Reply-To: <1590444502-20533-1-git-send-email-jsimmons@infradead.org> References: <1590444502-20533-1-git-send-email-jsimmons@infradead.org> Message-ID: <1590444502-20533-8-git-send-email-jsimmons@infradead.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lustre-devel@lists.lustre.org From: Mr NeilBrown This field is never set, so remove it and remove all uses of it. Conversely, msg_kiov is always non-NULL, so remove code that depends on it being NULL. WC-bug-id: https://jira.whamcloud.com/browse/LU-13004 Lustre-commit: 585e6df77ebf2 ("LU-13004 lnet: remove msg_iov from lnet_msg.") Signed-off-by: Mr NeilBrown Reviewed-on: https://review.whamcloud.com/37844 Reviewed-by: James Simmons Reviewed-by: Shaun Tancheff Reviewed-by: Oleg Drokin Signed-off-by: James Simmons --- include/linux/lnet/lib-types.h | 1 - net/lnet/klnds/o2iblnd/o2iblnd_cb.c | 34 ++++++++------------------------ net/lnet/klnds/socklnd/socklnd_cb.c | 39 +++++++++++-------------------------- net/lnet/lnet/lib-move.c | 16 ++++----------- net/lnet/lnet/lo.c | 17 +++++----------- 5 files changed, 28 insertions(+), 79 deletions(-) diff --git a/include/linux/lnet/lib-types.h b/include/linux/lnet/lib-types.h index 9a11aa5..1a71483 100644 --- a/include/linux/lnet/lib-types.h +++ b/include/linux/lnet/lib-types.h @@ -164,7 +164,6 @@ struct lnet_msg { unsigned int msg_wanted; unsigned int msg_offset; unsigned int msg_niov; - struct kvec *msg_iov; struct bio_vec *msg_kiov; struct lnet_event msg_ev; diff --git a/net/lnet/klnds/o2iblnd/o2iblnd_cb.c b/net/lnet/klnds/o2iblnd/o2iblnd_cb.c index 7f782fb..18edb1e 100644 --- a/net/lnet/klnds/o2iblnd/o2iblnd_cb.c +++ b/net/lnet/klnds/o2iblnd/o2iblnd_cb.c @@ -1564,7 +1564,6 @@ static int kiblnd_resolve_addr(struct rdma_cm_id *cmid, int target_is_router = lntmsg->msg_target_is_router; int routing = lntmsg->msg_routing; unsigned int payload_niov = lntmsg->msg_niov; - struct kvec *payload_iov = lntmsg->msg_iov; struct bio_vec *payload_kiov = lntmsg->msg_kiov; unsigned int payload_offset = lntmsg->msg_offset; unsigned int payload_nob = lntmsg->msg_len; @@ -1585,17 +1584,10 @@ static int kiblnd_resolve_addr(struct rdma_cm_id *cmid, /* Thread context */ LASSERT(!in_interrupt()); - /* payload is either all vaddrs or all pages */ - LASSERT(!(payload_kiov && payload_iov)); - if (payload_kiov) - iov_iter_bvec(&from, WRITE, - payload_kiov, payload_niov, - payload_nob + payload_offset); - else - iov_iter_kvec(&from, WRITE, - payload_iov, payload_niov, - payload_nob + payload_offset); + iov_iter_bvec(&from, WRITE, + payload_kiov, payload_niov, + payload_nob + payload_offset); iov_iter_advance(&from, payload_offset); @@ -1627,9 +1619,8 @@ static int kiblnd_resolve_addr(struct rdma_cm_id *cmid, ibmsg = tx->tx_msg; rd = &ibmsg->ibm_u.get.ibgm_rd; rc = kiblnd_setup_rd_kiov(ni, tx, rd, - lntmsg->msg_md->md_niov, - lntmsg->msg_md->md_kiov, - 0, lntmsg->msg_md->md_length); + payload_niov, payload_kiov, + payload_offset, payload_nob); if (rc) { CERROR("Can't setup GET sink for %s: %d\n", libcfs_nid2str(target.nid), rc); @@ -1672,14 +1663,9 @@ static int kiblnd_resolve_addr(struct rdma_cm_id *cmid, return -ENOMEM; } - if (!payload_kiov) - rc = kiblnd_setup_rd_iov(ni, tx, tx->tx_rd, - payload_niov, payload_iov, - payload_offset, payload_nob); - else - rc = kiblnd_setup_rd_kiov(ni, tx, tx->tx_rd, - payload_niov, payload_kiov, - payload_offset, payload_nob); + rc = kiblnd_setup_rd_kiov(ni, tx, tx->tx_rd, + payload_niov, payload_kiov, + payload_offset, payload_nob); if (rc) { CERROR("Can't setup PUT src for %s: %d\n", libcfs_nid2str(target.nid), rc); @@ -1733,7 +1719,6 @@ static int kiblnd_resolve_addr(struct rdma_cm_id *cmid, { struct lnet_process_id target = lntmsg->msg_target; unsigned int niov = lntmsg->msg_niov; - struct kvec *iov = lntmsg->msg_iov; struct bio_vec *kiov = lntmsg->msg_kiov; unsigned int offset = lntmsg->msg_offset; unsigned int nob = lntmsg->msg_len; @@ -1749,9 +1734,6 @@ static int kiblnd_resolve_addr(struct rdma_cm_id *cmid, if (!nob) rc = 0; - else if (!kiov) - rc = kiblnd_setup_rd_iov(ni, tx, tx->tx_rd, - niov, iov, offset, nob); else rc = kiblnd_setup_rd_kiov(ni, tx, tx->tx_rd, niov, kiov, offset, nob); diff --git a/net/lnet/klnds/socklnd/socklnd_cb.c b/net/lnet/klnds/socklnd/socklnd_cb.c index 9d5e03b..83fcb28 100644 --- a/net/lnet/klnds/socklnd/socklnd_cb.c +++ b/net/lnet/klnds/socklnd/socklnd_cb.c @@ -914,7 +914,6 @@ struct ksock_route * int type = lntmsg->msg_type; struct lnet_process_id target = lntmsg->msg_target; unsigned int payload_niov = lntmsg->msg_niov; - struct kvec *payload_iov = lntmsg->msg_iov; struct bio_vec *payload_kiov = lntmsg->msg_kiov; unsigned int payload_offset = lntmsg->msg_offset; unsigned int payload_nob = lntmsg->msg_len; @@ -931,16 +930,10 @@ struct ksock_route * LASSERT(!payload_nob || payload_niov > 0); LASSERT(payload_niov <= LNET_MAX_IOV); - /* payload is either all vaddrs or all pages */ - LASSERT(!(payload_kiov && payload_iov)); LASSERT(!in_interrupt()); - if (payload_iov) - desc_size = offsetof(struct ksock_tx, - tx_frags.virt.iov[1 + payload_niov]); - else - desc_size = offsetof(struct ksock_tx, - tx_frags.paged.kiov[payload_niov]); + desc_size = offsetof(struct ksock_tx, + tx_frags.paged.kiov[payload_niov]); if (lntmsg->msg_vmflush) mpflag = memalloc_noreclaim_save(); @@ -956,25 +949,15 @@ struct ksock_route * tx->tx_conn = NULL; /* set when assigned a conn */ tx->tx_lnetmsg = lntmsg; - if (payload_iov) { - tx->tx_kiov = NULL; - tx->tx_nkiov = 0; - tx->tx_iov = tx->tx_frags.virt.iov; - tx->tx_niov = 1 + - lnet_extract_iov(payload_niov, &tx->tx_iov[1], - payload_niov, payload_iov, - payload_offset, payload_nob); - } else { - tx->tx_niov = 1; - tx->tx_iov = &tx->tx_frags.paged.iov; - tx->tx_kiov = tx->tx_frags.paged.kiov; - tx->tx_nkiov = lnet_extract_kiov(payload_niov, tx->tx_kiov, - payload_niov, payload_kiov, - payload_offset, payload_nob); - - if (payload_nob >= *ksocknal_tunables.ksnd_zc_min_payload) - tx->tx_zc_capable = 1; - } + tx->tx_niov = 1; + tx->tx_iov = &tx->tx_frags.paged.iov; + tx->tx_kiov = tx->tx_frags.paged.kiov; + tx->tx_nkiov = lnet_extract_kiov(payload_niov, tx->tx_kiov, + payload_niov, payload_kiov, + payload_offset, payload_nob); + + if (payload_nob >= *ksocknal_tunables.ksnd_zc_min_payload) + tx->tx_zc_capable = 1; tx->tx_msg.ksm_csum = 0; tx->tx_msg.ksm_type = KSOCK_MSG_LNET; diff --git a/net/lnet/lnet/lib-move.c b/net/lnet/lnet/lib-move.c index dc49e60..6ef9978 100644 --- a/net/lnet/lnet/lib-move.c +++ b/net/lnet/lnet/lib-move.c @@ -485,7 +485,6 @@ void lnet_usr_translate_stats(struct lnet_ioctl_element_msg_stats *msg_stats, unsigned int rlen) { unsigned int niov = 0; - struct kvec *iov = NULL; struct bio_vec *kiov = NULL; struct iov_iter to; int rc; @@ -505,21 +504,16 @@ void lnet_usr_translate_stats(struct lnet_ioctl_element_msg_stats *msg_stats, if (mlen) { niov = msg->msg_niov; - iov = msg->msg_iov; kiov = msg->msg_kiov; LASSERT(niov > 0); - LASSERT(!iov != !kiov); + LASSERT(kiov); } } - if (iov) { - iov_iter_kvec(&to, READ, iov, niov, mlen + offset); - iov_iter_advance(&to, offset); - } else { - iov_iter_bvec(&to, READ, kiov, niov, mlen + offset); - iov_iter_advance(&to, offset); - } + iov_iter_bvec(&to, READ, kiov, niov, mlen + offset); + iov_iter_advance(&to, offset); + rc = ni->ni_net->net_lnd->lnd_recv(ni, private, msg, delayed, &to, rlen); if (rc < 0) lnet_finalize(msg, rc); @@ -534,7 +528,6 @@ void lnet_usr_translate_stats(struct lnet_ioctl_element_msg_stats *msg_stats, LASSERT(!msg->msg_routing); LASSERT(md); LASSERT(!msg->msg_niov); - LASSERT(!msg->msg_iov); LASSERT(!msg->msg_kiov); msg->msg_niov = md->md_niov; @@ -809,7 +802,6 @@ void lnet_usr_translate_stats(struct lnet_ioctl_element_msg_stats *msg_stats, struct lnet_rtrbufpool *rbp; struct lnet_rtrbuf *rb; - LASSERT(!msg->msg_iov); LASSERT(!msg->msg_kiov); LASSERT(!msg->msg_niov); LASSERT(msg->msg_routing); diff --git a/net/lnet/lnet/lo.c b/net/lnet/lnet/lo.c index c19a5b5..58b0ee9 100644 --- a/net/lnet/lnet/lo.c +++ b/net/lnet/lnet/lo.c @@ -51,18 +51,11 @@ struct lnet_msg *sendmsg = private; if (lntmsg) { /* not discarding */ - if (sendmsg->msg_iov) - lnet_copy_iov2iter(to, - sendmsg->msg_niov, - sendmsg->msg_iov, - sendmsg->msg_offset, - iov_iter_count(to)); - else - lnet_copy_kiov2iter(to, - sendmsg->msg_niov, - sendmsg->msg_kiov, - sendmsg->msg_offset, - iov_iter_count(to)); + lnet_copy_kiov2iter(to, + sendmsg->msg_niov, + sendmsg->msg_kiov, + sendmsg->msg_offset, + iov_iter_count(to)); lnet_finalize(lntmsg, 0); } -- 1.8.3.1