Sowmini Varadhan ea8994cb01 rds: hold a sock ref from rds_message to the rds_sock ...

The existing model holds a reference from the rds_sock to the
rds_message, but the rds_message does not itself hold a sock_put()
on the rds_sock. Instead the m_rs field in the rds_message is
assigned when the message is queued on the sock, and nulled when
the message is dequeued from the sock.

We want to be able to notify userspace when the rds_message
is actually freed (from rds_message_purge(), after the refcounts
to the rds_message go to 0). At the time that rds_message_purge()
is called, the message is no longer on the rds_sock retransmit
queue. Thus the explicit reference for the m_rs is needed to
send a notification that will signal to userspace that
it is now safe to free/reuse any pages that may have
been pinned down for zerocopy.

This patch manages the m_rs assignment in the rds_message with
the necessary refcount book-keeping.

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2018-02-16 16:04:16 -05:00

..

af_rds.c

net: make getname() functions return length rather than use int* parameter

2018-02-12 14:15:04 -05:00

bind.c

rds; Reset rs->rs_bound_addr in rds_add_bound() failure path

2017-12-27 13:37:27 -05:00

cong.c

rds: tcp: use rds_destroy_pending() to synchronize netns/module teardown and rds connection/workq management

2018-02-08 15:23:52 -05:00

connection.c

rds: tcp: use rds_destroy_pending() to synchronize netns/module teardown and rds connection/workq management

2018-02-08 15:23:52 -05:00

ib_cm.c

rds: tcp: use rds_destroy_pending() to synchronize netns/module teardown and rds connection/workq management

2018-02-08 15:23:52 -05:00

ib_fmr.c

net/rds/ib_fmr.c: use kmalloc_array_node()

2017-11-15 18:21:02 -08:00

ib_frmr.c

RDS: IB: split the mr registration and invalidation path

2017-01-02 14:02:47 -08:00

ib_mr.h

rds: ib: add the static type to the function

2017-03-13 23:20:05 -07:00

ib_rdma.c

RDS: IB: Initialize max_items based on underlying device attributes

2017-10-05 21:16:33 -07:00

ib_recv.c

rds: ib: Fix NULL pointer dereference in debug code

2017-11-10 14:54:47 +09:00

ib_ring.c

…

ib_send.c

rds: Fix inaccurate accounting of unsignaled wrs

2017-10-26 17:35:57 +09:00

ib_stats.c

RDS: IB: add few useful cache stasts

2017-01-02 14:02:51 -08:00

ib_sysctl.c

net: Convert uses of typedef ctl_table to struct ctl_table

2013-06-13 02:36:09 -07:00

ib.c

rds: tcp: use rds_destroy_pending() to synchronize netns/module teardown and rds connection/workq management

2018-02-08 15:23:52 -05:00

ib.h

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-11-04 09:26:51 +09:00

info.c

rds: fix an integer overflow test in rds_info_getsockopt()

2015-08-03 15:20:16 -07:00

info.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Kconfig

RDS: Drop stale iWARP RDMA transport

2016-03-02 14:13:17 -05:00

loop.c

RDS: TCP: Hooks to set up a single connection path

2016-07-01 16:45:17 -04:00

loop.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

message.c

rds: hold a sock ref from rds_message to the rds_sock

2018-02-16 16:04:16 -05:00

page.c

rds: remove dead code

2016-12-26 21:35:39 -05:00

rdma_transport.c

RDS: RDMA: start rdma listening after init

2017-01-02 14:02:45 -08:00

rdma_transport.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rdma.c

RDS: null pointer dereference in rds_atomic_free_op

2018-01-04 14:19:26 -05:00

rds_single_path.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rds.h

rds: tcp: use rds_destroy_pending() to synchronize netns/module teardown and rds connection/workq management

2018-02-08 15:23:52 -05:00

recv.c

net, rds: convert rds_incoming.i_refcount from atomic_t to refcount_t

2017-07-04 22:35:17 +01:00

send.c

rds: hold a sock ref from rds_message to the rds_sock

2018-02-16 16:04:16 -05:00

stats.c

net/rds: zero last byte for strncpy

2013-03-08 00:35:44 -05:00

sysctl.c

net: rds: fix coding style issues

2016-06-18 21:34:09 -07:00

tcp_connect.c

rds: tcp: use rds_destroy_pending() to synchronize netns/module teardown and rds connection/workq management

2018-02-08 15:23:52 -05:00

tcp_listen.c

rds: tcp: use sock_create_lite() to create the accept socket

2017-07-08 11:16:16 +01:00

tcp_recv.c

rds: tcp: use rds_destroy_pending() to synchronize netns/module teardown and rds connection/workq management

2018-02-08 15:23:52 -05:00

tcp_send.c

rds: tcp: use rds_destroy_pending() to synchronize netns/module teardown and rds connection/workq management

2018-02-08 15:23:52 -05:00

tcp_stats.c

…

tcp.c

net: make getname() functions return length rather than use int* parameter

2018-02-12 14:15:04 -05:00

tcp.h

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2018-01-23 13:51:56 -05:00

threads.c

rds: tcp: use rds_destroy_pending() to synchronize netns/module teardown and rds connection/workq management

2018-02-08 15:23:52 -05:00

transport.c

rds: remove unnecessary returned value check

2017-03-03 09:51:22 -08:00