From: Oleg Drokin <green@linuxhacker.ru>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
devel@driverdev.osuosl.org,
Andreas Dilger <andreas.dilger@intel.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Lustre Development List <lustre-devel@lists.lustre.org>,
Al Viro <viro@zeniv.linux.org.uk>,
Oleg Drokin <green@linuxhacker.ru>
Subject: [PATCH 02/13] ksocknal_lib_send_iov(): sendmsg doesn't bugger iovec...
Date: Sat, 20 Aug 2016 17:34:19 -0400 [thread overview]
Message-ID: <1471728870-518753-3-git-send-email-green@linuxhacker.ru> (raw)
In-Reply-To: <1471728870-518753-1-git-send-email-green@linuxhacker.ru>
From: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
.../lustre/lnet/klnds/socklnd/socklnd_lib.c | 38 ++++++----------------
1 file changed, 10 insertions(+), 28 deletions(-)
diff --git a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_lib.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_lib.c
index 77bb29ff..8eb4a68 100644
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_lib.c
+++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_lib.c
@@ -73,9 +73,9 @@ ksocknal_lib_zc_capable(struct ksock_conn *conn)
int
ksocknal_lib_send_iov(struct ksock_conn *conn, struct ksock_tx *tx)
{
+ struct msghdr msg = {.msg_flags = MSG_DONTWAIT};
struct socket *sock = conn->ksnc_sock;
- int nob;
- int rc;
+ int nob, i;
if (*ksocknal_tunables.ksnd_enable_csum && /* checksum enabled */
conn->ksnc_proto == &ksocknal_protocol_v2x && /* V2.x connection */
@@ -83,34 +83,16 @@ ksocknal_lib_send_iov(struct ksock_conn *conn, struct ksock_tx *tx)
!tx->tx_msg.ksm_csum) /* not checksummed */
ksocknal_lib_csum_tx(tx);
- /*
- * NB we can't trust socket ops to either consume our iovs
- * or leave them alone.
- */
- {
-#if SOCKNAL_SINGLE_FRAG_TX
- struct kvec scratch;
- struct kvec *scratchiov = &scratch;
- unsigned int niov = 1;
-#else
- struct kvec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
- unsigned int niov = tx->tx_niov;
-#endif
- struct msghdr msg = {.msg_flags = MSG_DONTWAIT};
- int i;
-
- for (nob = i = 0; i < niov; i++) {
- scratchiov[i] = tx->tx_iov[i];
- nob += scratchiov[i].iov_len;
- }
+ for (nob = i = 0; i < tx->tx_niov; i++)
+ nob += tx->tx_iov[i].iov_len;
- if (!list_empty(&conn->ksnc_tx_queue) ||
- nob < tx->tx_resid)
- msg.msg_flags |= MSG_MORE;
+ if (!list_empty(&conn->ksnc_tx_queue) ||
+ nob < tx->tx_resid)
+ msg.msg_flags |= MSG_MORE;
- rc = kernel_sendmsg(sock, &msg, scratchiov, niov, nob);
- }
- return rc;
+ iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC,
+ tx->tx_iov, tx->tx_niov, nob);
+ return sock_sendmsg(sock, &msg);
}
int
--
2.7.4
next prev parent reply other threads:[~2016-08-20 21:35 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-20 21:34 [PATCH 00/13] Lustre patches Oleg Drokin
2016-08-20 21:34 ` [PATCH 01/13] ksocknal_lib_recv_iov(): recvmsg doesn't bugger iovec anymore Oleg Drokin
2016-08-20 21:34 ` Oleg Drokin [this message]
2016-08-20 21:34 ` [PATCH 03/13] ksocknal_lib_send_kiov(): sendmsg doesn't bugger iovec Oleg Drokin
2016-08-20 21:34 ` [PATCH 04/13] lustre: ->kss_scratch... are unused now Oleg Drokin
2016-08-20 21:34 ` [PATCH 05/13] lustre: constify lib-move.c stuff Oleg Drokin
2016-08-20 21:34 ` [PATCH 06/13] lustre: pass iov_iter to ->lnd_recv() Oleg Drokin
2016-08-20 21:34 ` [PATCH 07/13] lustre: introduce lnet_copy_{k,}iov2iter(), kill lnet_copy_{k,}iov2{k,}iov() Oleg Drokin
2016-08-20 21:34 ` [PATCH 08/13] staging/lustre: Always return EEXIST on mkdir for existing names Oleg Drokin
2016-08-20 21:34 ` [PATCH 09/13] staging/lustre: Add spaces preferred around that '{+,-,*,/,|,<<,>>,&}' Oleg Drokin
2016-08-21 14:11 ` [PATCH 09/13] staging/lustre: Add spaces preferred around that '{+, -, *, /, |, <<, >>, &}' Greg Kroah-Hartman
2016-08-20 21:34 ` [PATCH 10/13] staging/lustre: Fix unnecessary parentheses around variables Oleg Drokin
2016-08-20 21:34 ` [PATCH 11/13] staging/lustre: Make alignment match open parenthesis Oleg Drokin
2016-08-21 14:35 ` Greg Kroah-Hartman
2016-08-20 21:34 ` [PATCH 12/13] staging/lustre: Remove unused cp_error from struct cl_page Oleg Drokin
2016-08-21 14:36 ` Greg Kroah-Hartman
2016-08-20 21:34 ` [PATCH 13/13] Add James Simmons as another Lustre maintainer Oleg Drokin
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