Linus Torvalds
a11e1d432b
Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL ...
The poll() changes were not well thought out, and completely
unexplained. They also caused a huge performance regression, because
"->poll()" was no longer a trivial file operation that just called down
to the underlying file operations, but instead did at least two indirect
calls.
Indirect calls are sadly slow now with the Spectre mitigation, but the
performance problem could at least be largely mitigated by changing the
"->get_poll_head()" operation to just have a per-file-descriptor pointer
to the poll head instead. That gets rid of one of the new indirections.
But that doesn't fix the new complexity that is completely unwarranted
for the regular case. The (undocumented) reason for the poll() changes
was some alleged AIO poll race fixing, but we don't make the common case
slower and more complex for some uncommon special case, so this all
really needs way more explanations and most likely a fundamental
redesign.
[ This revert is a revert of about 30 different commits, not reverted
individually because that would just be unnecessarily messy - Linus ]
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-28 10:40:47 -07:00
net: bpfilter: make function bpfilter_mbox_request() static
2018-05-29 09:51:44 -04:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
2018-06-11 14:24:32 -07:00
Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL
2018-06-28 10:40:47 -07:00
net: use -ENOSPC for transient busy indication
2017-11-03 22:11:17 +08:00
proc: introduce proc_create_net{,_data}
2018-05-16 07:24:30 +02:00
tcp/dccp: fix ireq->opt races
2017-10-21 01:33:19 +01:00
net/ipv4: Add support for specifying metric of connected routes
2018-05-29 10:12:45 -04:00
esp4: remove redundant initialization of pointer esph
2018-02-13 13:59:03 +01:00
esp: check the NETIF_F_HW_ESP_TX_CSUM bit before segmenting
2018-02-27 10:46:01 +01:00
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
net: fib_rules: add extack support
2018-04-23 10:21:24 -04:00
net: metrics: add proper netlink validation
2018-06-05 12:29:43 -04:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-06-06 18:39:49 -07:00
net: Drop pernet_operations::async
2018-03-27 13:18:09 -04:00
gso: fix payload length when gso_size is zero
2017-10-08 10:12:15 -07:00
net: Drop pernet_operations::async
2018-03-27 13:18:09 -04:00
proc: introduce proc_create_net{,_data}
2018-05-16 07:24:30 +02:00
net: ipv4: remove define INET_CSK_DEBUG and unnecessary EXPORT_SYMBOL
2018-05-10 17:43:55 -04:00
sock_diag: request _diag module only when the family or proto has been registered
2018-03-12 11:03:42 -04:00
inet: frags: remove inet_frag_maybe_warn_overflow()
2018-03-31 23:25:39 -04:00
net/tcp: Fix socket lookups with SO_BINDTODEVICE
2018-06-20 08:03:06 +09:00
soreuseport: initialise timewait reuseport field
2018-04-07 22:32:32 -04:00
inetpeer: fix uninit-value in inet_getpeer
2018-04-09 10:57:35 -04:00
net: rename skb_gso_validate_mtu -> skb_gso_validate_network_len
2018-03-04 17:49:17 -05:00
inet: frags: fix ip6frag_low_thresh boundary
2018-04-04 12:04:59 -04:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-05-21 16:01:54 -04:00
net: Make ip_ra_chain per struct net
2018-03-22 15:12:56 -04:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ip: limit use of gso_size to udp
2018-06-20 14:41:04 +09:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-05-26 19:46:15 -04:00
ip_tunnel: Fix name string concatenate in __ip_tunnel_create()
2018-06-07 16:27:16 -04:00
net/ipv4: Update ip_tunnel_metadata_cnt static key to modern api
2018-05-10 15:13:33 -04:00
net: Drop pernet_operations::async
2018-03-27 13:18:09 -04:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-06-06 18:39:49 -07:00
net: Drop pernet_operations::async
2018-03-27 13:18:09 -04:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-06-06 18:39:49 -07:00
ipmr: fix error path when ipmr_new_table fails
2018-06-05 12:26:41 -04:00
ipmr,ipmr6: Define a uniform vif_device
2018-03-01 13:13:23 -05:00
ipv4: support sport, dport and ip_proto in RTM_GETROUTE
2018-05-23 15:14:12 -04:00
net: metrics: add proper netlink validation
2018-06-05 12:29:43 -04:00
netfilter: remove struct nf_afinfo and its helper functions
2018-01-08 18:11:02 +01:00
ipv4: support sport, dport and ip_proto in RTM_GETROUTE
2018-05-23 15:14:12 -04:00
proc: introduce proc_create_net{,_data}
2018-05-16 07:24:30 +02:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-06-06 18:39:49 -07:00
net: Add sysctl to toggle early demux for tcp and udp
2017-03-24 13:17:07 -07:00
proc: introduce proc_create_net{,_data}
2018-05-16 07:24:30 +02:00
net: ipv6: add second dif to raw socket lookups
2017-08-07 11:39:22 -07:00
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
net/ipv4: disable SMC TCP option with SYN Cookies
2018-03-25 20:53:54 -04:00
net-tcp: extend tcp_tw_reuse sysctl to enable loopback only optimization
2018-06-04 17:13:35 -04:00
Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL
2018-06-28 10:40:47 -07:00
tcp_bbr: fix to zero idle_restart only upon S/ACKed data
2018-05-02 11:12:32 -04:00
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp: cdg: make struct tcp_cdg static
2017-10-16 21:24:25 +01:00
tcp: Namespace-ify sysctl_tcp_default_congestion_control
2017-11-15 14:09:52 +09:00
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
Revert "dctcp: update cwnd on congestion event"
2016-12-06 11:34:24 -05:00
net: sock: replace sk_state_load with inet_sk_state_load and remove sk_state_store
2017-12-20 14:00:25 -05:00
tcp: pause Fast Open globally after third consecutive timeout
2017-12-13 15:51:12 -05:00
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp: fix cwnd undo in Reno and HTCP congestion controls
2017-08-06 21:25:10 -07:00
tcp: make undo_cwnd mandatory for congestion modules
2016-11-21 13:20:17 -05:00
net/tcp/illinois: replace broken algorithm reference link
2018-02-28 12:03:47 -05:00
tcp: refactor tcp_ecn_check_ce to remove sk type cast
2018-06-05 10:09:27 -04:00
tcp: verify the checksum of the first data segment in a new connection
2018-06-14 17:04:41 -07:00
tcp: switch TCP TS option (RFC 7323) to 1ms clock
2017-05-17 16:06:01 -04:00
net: Drop pernet_operations::async
2018-03-27 13:18:09 -04:00
net-tcp: remove useless tw_timeout field
2018-06-05 10:45:24 -04:00
tcp_nv: fix potential integer overflow in tcpnv_acked
2018-01-31 10:26:30 -05:00
tcp: Do not reload skb pointer after skb_gro_receive().
2018-06-11 20:00:56 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-05-21 16:01:54 -04:00
tcp: invalidate rate samples during SACK reneging
2017-12-08 10:07:02 -05:00
tcp: tcp_rack_reo_wnd() can be static
2018-05-18 13:28:40 -04:00
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp: add SACK compression
2018-05-18 11:40:27 -04:00
net: add a UID to use for ULP socket assignment
2018-02-06 11:39:31 +01:00
tcp: fix under-evaluated ssthresh in TCP Vegas
2017-09-29 06:07:00 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp: Revert "tcp: remove CA_ACK_SLOWPATH"
2017-08-30 11:20:08 -07:00
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
inet: whitespace cleanup
2018-02-28 11:43:28 -05:00
Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL
2018-06-28 10:40:47 -07:00
udp: fix rx queue len reported by diag and proc interface
2018-06-08 19:55:15 -04:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
udp: avoid refcount_t saturation in __udp_gso_segment()
2018-05-11 12:29:42 -04:00
net: add infrastructure to un-offload UDP tunnel port
2017-07-24 13:52:59 -07:00
proc: introduce proc_create_net{,_data}
2018-05-16 07:24:30 +02:00
xfrm: Reinject transport-mode packets through tasklet
2017-12-19 08:23:21 +01:00
networking: make skb_pull & friends return void pointers
2017-06-16 11:48:39 -04:00
xfrm: Add encapsulation header offsets while SKB is not encrypted
2017-04-14 10:07:39 +02:00
xfrm: Verify MAC header exists before overwriting eth_hdr(skb)->h_proto
2018-03-07 10:54:29 +01:00
net: xfrm: use skb_gso_validate_network_len() to check gso sizes
2018-03-04 17:49:17 -05:00
net: Drop pernet_operations::async
2018-03-27 13:18:09 -04:00
xfrm: input: constify xfrm_input_afinfo
2017-02-09 10:22:17 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
a11e1d432b