linux/net
Joonsoo Kim fe896d1878 mm: introduce page reference manipulation functions
The success of CMA allocation largely depends on the success of
migration and key factor of it is page reference count.  Until now, page
reference is manipulated by direct calling atomic functions so we cannot
follow up who and where manipulate it.  Then, it is hard to find actual
reason of CMA allocation failure.  CMA allocation should be guaranteed
to succeed so finding offending place is really important.

In this patch, call sites where page reference is manipulated are
converted to introduced wrapper function.  This is preparation step to
add tracepoint to each page reference manipulation function.  With this
facility, we can easily find reason of CMA allocation failure.  There is
no functional change in this patch.

In addition, this patch also converts reference read sites.  It will
help a second step that renames page._count to something else and
prevents later attempt to direct access to it (Suggested by Andrew).

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-03-17 15:09:34 -07:00
..
6lowpan 6lowpan: fix debugfs interface entry name 2015-12-20 08:21:00 +01:00
9p Rework and error handling fixes, primarily in the fscatch and fd transports. 2016-01-24 12:39:09 -08:00
802
8021q net: Rename NETIF_F_ALL_CSUM to NETIF_F_CSUM_MASK 2015-12-15 16:50:08 -05:00
appletalk appletalk: fix erroneous return value 2016-02-18 14:59:34 -05:00
atm net: Generalise wq_has_sleeper helper 2015-11-30 14:47:33 -05:00
ax25 net: add validation for the socket syscall protocol argument 2015-12-14 16:09:30 -05:00
batman-adv batman-adv: Avoid endless loop in bat-on-bat netdevice check 2016-02-16 22:16:33 +08:00
bluetooth Bluetooth: hci_core: Avoid mixing up req_complete and req_complete_skb 2016-02-20 08:52:28 +01:00
bridge net: ndo_fdb_dump should report -EMSGSIZE to rtnl_fdb_dump. 2016-02-26 15:04:02 -05:00
caif net: caif: fix erroneous return value 2016-02-18 14:59:35 -05:00
can can: avoid using timeval for uapi 2015-10-13 17:42:34 +02:00
ceph libceph: don't spam dmesg with stray reply warnings 2016-02-24 20:28:51 +01:00
core mm: introduce page reference manipulation functions 2016-03-17 15:09:34 -07:00
dcb net/dcb: make dcbnl.c explicitly non-modular 2015-10-09 07:52:27 -07:00
dccp tcp/dccp: fix another race at listener dismantle 2016-02-18 11:35:51 -05:00
decnet net: add validation for the socket syscall protocol argument 2015-12-14 16:09:30 -05:00
dns_resolver net: dns_resolver: convert time_t to time64_t 2015-11-18 16:27:46 -05:00
dsa net: dsa: Unregister slave_dev in error path 2016-02-17 22:05:16 -05:00
ethernet net: Add eth_platform_get_mac_address() helper. 2016-01-06 16:31:56 -05:00
hsr net/hsr: fix a warning message 2015-11-23 14:56:15 -05:00
ieee802154 inet: kill unused skb_free op 2016-01-05 22:25:57 -05:00
ipv4 tags: Fix DEFINE_PER_CPU expansions 2016-03-15 16:55:16 -07:00
ipv6 tags: Fix DEFINE_PER_CPU expansions 2016-03-15 16:55:16 -07:00
ipx
irda irda: fix a potential use-after-free in ircomm_param_request 2016-01-29 22:56:46 -08:00
iucv af_iucv: Validate socket address length in iucv_sock_bind() 2016-01-19 14:21:08 -05:00
key af_key: fix two typos 2015-10-23 03:05:19 -07:00
l2tp l2tp: Fix error creating L2TP tunnels 2016-02-17 15:34:47 -05:00
l3mdev net: Add netif_is_l3_slave 2015-10-07 04:27:43 -07:00
lapb
llc
mac80211 Here are a few more fixes for the current cycle: 2016-03-02 13:35:31 -05:00
mac802154 mac802154: constify ieee802154_llsec_ops structure 2016-01-04 20:40:41 +01:00
mpls Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-17 22:08:28 -05:00
netfilter netfilter: nft_counter: fix erroneous return values 2016-02-08 13:05:02 +01:00
netlabel
netlink netlink: not trim skb for mmaped socket when dump 2016-01-29 20:25:17 -08:00
netrom
nfc NFC 4.5 pull request 2016-01-04 21:48:15 -05:00
openvswitch lwt: fix rx checksum setting for lwt devices tunneling over ipv6 2016-02-19 15:39:30 -05:00
packet packet: Allow packets with only a header (but no payload) 2015-11-29 22:17:17 -05:00
phonet phonet: properly unshare skbs in phonet_rcv() 2016-01-12 12:05:38 -05:00
rds tags: Fix DEFINE_PER_CPU expansions 2016-03-15 16:55:16 -07:00
rfkill rfkill: fix rfkill_fop_read wait_event usage 2016-01-26 11:32:05 +01:00
rose
rxrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-01-12 18:57:02 -08:00
sched net: sched: fix act_ipt for LOG target 2016-03-06 22:57:35 -05:00
sctp sctp: sctp_remaddr_seq_show use the wrong variable to dump transport info 2016-03-01 17:35:44 -05:00
sunrpc One fix for a bug that could cause a NULL write past the end of a buffer 2016-02-25 19:31:01 -08:00
switchdev net: ndo_fdb_dump should report -EMSGSIZE to rtnl_fdb_dump. 2016-02-26 15:04:02 -05:00
tipc tipc: fix nullptr crash during subscription cancel 2016-03-06 23:00:08 -05:00
unix af_unix: Don't use continue to re-execute unix_stream_read_generic loop 2016-02-19 23:50:31 -05:00
vmw_vsock vsock: Fix blocking ops call in prepare_to_wait 2016-02-13 05:57:39 -05:00
wimax
wireless cfg80211: stop critical protocol session upon disconnect event 2016-02-23 10:41:24 +01:00
x25
xfrm net: preserve IP control block during GSO segmentation 2016-01-15 14:35:24 -05:00
compat.c
Kconfig net, sched: add clsact qdisc 2016-01-10 22:13:15 -05:00
Makefile net: Introduce L3 Master device abstraction 2015-09-29 20:40:32 -07:00
socket.c kmemcg: account certain kmem allocations to memcg 2016-01-14 16:00:49 -08:00
sysctl_net.c net: sysctl: fix a kmemleak warning 2015-10-23 06:22:08 -07:00