The commit is pushed to "branch-rh7-3.10.0-957.10.1.vz7.94.x-ovz" and will
appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-957.10.1.vz7.94.13
------>
commit b6133ff6b308efb601a63a6b54993fd377cecc50
Author: Pavel Butsykin <pbutsy...@virtuozzo.com>
Date: Mon Apr 15 15:55:12 2019 +0300
fs/fuse kio: add missed sock write in pcs_sock_sendmsg()
We need to write the ready data to socket, in case write_queue list is
empty,
instead of rescheduling it. This will help maintain a balance between recv
and
send, because after rescheduling the receive will be called first.
Signed-off-by: Pavel Butsykin <pbutsy...@virtuozzo.com>
=====================
Patchset description:
KIO performance fixes
This patch-set aims to fix the performance issue with single-thread
sequential
async reads.
https://pmc.acronis.com/browse/VSTOR-11050
Acked-by: Alexey Kuznetsov <kuz...@virtuozzo.com>
Pavel Butsykin (4):
fs/fuse kio: fix a typo in worth_to_grow()
fs/fuse kio: relax congestion avoidance limits (backport from usermode)
fs/fuse kio: add missed sock write in pcs_sock_sendmsg()
fs/fuse kio: export io_locality
---
fs/fuse/kio/pcs/pcs_sock_io.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/fs/fuse/kio/pcs/pcs_sock_io.c b/fs/fuse/kio/pcs/pcs_sock_io.c
index ede71c255084..e0699f57a007 100644
--- a/fs/fuse/kio/pcs/pcs_sock_io.c
+++ b/fs/fuse/kio/pcs/pcs_sock_io.c
@@ -415,6 +415,8 @@ int pcs_sockio_delayed_seg(struct pcs_sockio *sio)
void pcs_sock_sendmsg(struct pcs_sockio * sio, struct pcs_msg *msg)
{
+ int was_idle = list_empty(&sio->write_queue);
+
DTRACE("sio(%p) msg:%p\n", sio, msg);
if (pcs_if_error(&sio->error)) {
@@ -432,6 +434,10 @@ void pcs_sock_sendmsg(struct pcs_sockio * sio, struct
pcs_msg *msg)
if (!(sio->flags & PCS_SOCK_F_POOLOUT))
sio->flags |= PCS_SOCK_F_POOLOUT;
+ if (was_idle) {
+ sio->flags &= ~PCS_SOCK_F_POOLOUT;
+ pcs_sockio_send(sio);
+ }
}
/* Try to cancel message send. If it is impossible, because message is in the
middle
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