[lustre-devel] [PATCH 07/45] lnet: remove msg_iov from lnet_msg.
James Simmons
jsimmons at infradead.org
Mon May 25 15:07:44 PDT 2020
From: Mr NeilBrown <neilb at suse.de>
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 <neilb at suse.de>
Reviewed-on: https://review.whamcloud.com/37844
Reviewed-by: James Simmons <jsimmons at infradead.org>
Reviewed-by: Shaun Tancheff <shaun.tancheff at hpe.com>
Reviewed-by: Oleg Drokin <green at whamcloud.com>
Signed-off-by: James Simmons <jsimmons at infradead.org>
---
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
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