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Merge branch 'rds-next'

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Gerd Rausch says:

====================
net/rds: Fixes from internal Oracle repo

This is the first set of (mostly old) patches from our internal repository
in an effort to synchronize what Oracle had been using internally
with what is shipped with the Linux kernel.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2019-08-15 12:04:24 -07:00
commit 4b58c9b127
5 changed files with 28 additions and 3 deletions
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2
net/rds/af_rds.c
View File

@ -705,7 +705,7 @@ static int rds_create(struct net *net, struct socket *sock, int protocol,
if (sock->type != SOCK_SEQPACKET || protocol)
return -ESOCKTNOSUPPORT;
sk = sk_alloc(net, AF_RDS, GFP_ATOMIC, &rds_proto, kern);
sk = sk_alloc(net, AF_RDS, GFP_KERNEL, &rds_proto, kern);
if (!sk)
return -ENOMEM;

12
net/rds/ib_recv.c
View File

@ -385,6 +385,7 @@ void rds_ib_recv_refill(struct rds_connection *conn, int prefill, gfp_t gfp)
unsigned int posted = 0;
int ret = 0;
bool can_wait = !!(gfp & __GFP_DIRECT_RECLAIM);
bool must_wake = false;
u32 pos;
/* the goal here is to just make sure that someone, somewhere
@ -405,6 +406,7 @@ void rds_ib_recv_refill(struct rds_connection *conn, int prefill, gfp_t gfp)
recv = &ic->i_recvs[pos];
ret = rds_ib_recv_refill_one(conn, recv, gfp);
if (ret) {
must_wake = true;
break;
}
@ -423,6 +425,11 @@ void rds_ib_recv_refill(struct rds_connection *conn, int prefill, gfp_t gfp)
}
posted++;
if ((posted > 128 && need_resched()) || posted > 8192) {
must_wake = true;
break;
}
}
/* We're doing flow control - update the window. */
@ -445,10 +452,13 @@ void rds_ib_recv_refill(struct rds_connection *conn, int prefill, gfp_t gfp)
* if we should requeue.
*/
if (rds_conn_up(conn) &&
((can_wait && rds_ib_ring_low(&ic->i_recv_ring)) ||
(must_wake ||
(can_wait && rds_ib_ring_low(&ic->i_recv_ring)) ||
rds_ib_ring_empty(&ic->i_recv_ring))) {
queue_delayed_work(rds_wq, &conn->c_recv_w, 1);
}
if (can_wait)
cond_resched();
}
/*

2
net/rds/rds.h
View File

@ -717,7 +717,7 @@ struct rds_statistics {
uint64_t s_cong_send_blocked;
uint64_t s_recv_bytes_added_to_socket;
uint64_t s_recv_bytes_removed_from_socket;
uint64_t s_send_stuck_rm;
};
/* af_rds.c */

12
net/rds/send.c
View File

@ -145,6 +145,7 @@ int rds_send_xmit(struct rds_conn_path *cp)
LIST_HEAD(to_be_dropped);
int batch_count;
unsigned long send_gen = 0;
int same_rm = 0;
restart:
batch_count = 0;
@ -200,6 +201,17 @@ restart:
rm = cp->cp_xmit_rm;
if (!rm) {
same_rm = 0;
} else {
same_rm++;
if (same_rm >= 4096) {
rds_stats_inc(s_send_stuck_rm);
ret = -EAGAIN;
break;
}
}
/*
* If between sending messages, we can send a pending congestion
* map update.

3
net/rds/stats.c
View File

@ -76,6 +76,9 @@ static const char *const rds_stat_names[] = {
"cong_update_received",
"cong_send_error",
"cong_send_blocked",
"recv_bytes_added_to_sock",
"recv_bytes_freed_fromsock",
"send_stuck_rm",
};
void rds_stats_info_copy(struct rds_info_iterator *iter,