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The opaque type rhash_lock_head should not be marked with __rcu
because it can never be dereferenced. We should apply the RCU
marking when we turn it into a pointer which can be dereferenced.
This patch does exactly that. This fixes a number of sparse
warnings as well as getting rid of some unnecessary RCU checking.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel Borkmann says:
====================
pull-request: bpf 2019-05-16
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) Fix a use after free in __dev_map_entry_free(), from Eric.
2) Several sockmap related bug fixes: a splat in strparser if
it was never initialized, remove duplicate ingress msg list
purging which can race, fix msg->sg.size accounting upon
skb to msg conversion, and last but not least fix a timeout
bug in tcp_bpf_wait_data(), from John.
3) Fix LRU map to avoid messing with eviction heuristics upon
syscall lookup, e.g. map walks from user space side will
then lead to eviction of just recently created entries on
updates as it would mark all map entries, from Daniel.
4) Don't bail out when libbpf feature probing fails. Also
various smaller fixes to flow_dissector test, from Stanislav.
5) Fix missing brackets for BTF_INT_OFFSET() in UAPI, from Gary.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The tcp_bpf_wait_data() routine needs to check timeo != 0 before
calling sk_wait_event() otherwise we may see unexpected stalls
on receiver.
Arika did all the leg work here I just formatted, posted and ran
a few tests.
Fixes: 604326b41a6fb ("bpf, sockmap: convert to generic sk_msg interface")
Reported-by: Arika Chen <eaglesora@gmail.com>
Suggested-by: Arika Chen <eaglesora@gmail.com>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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In case we are not running in a namespace (which we don't do by default),
let's try to detach the bpf program that we use for eth_get_headlen tests.
Fixes: 0905beec9f52 ("selftests/bpf: run flow dissector tests in skb-less mode")
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Otherwise, in case of an error, everything gets mushed together.
Fixes: a5cb33464e53 ("selftests/bpf: make flow dissector tests more extensible")
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Otherwise libbpf is unusable from unprivileged process with
kernel.kernel.unprivileged_bpf_disabled=1.
All I get is EPERM from the probes, even if I just want to
open an ELF object and look at what progs/maps it has.
Instead of dying on probes, let's just pr_debug the error and
try to continue.
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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It is illegal to change arbitrary fields in skb_shared_info if the
skb is cloned.
Before calling skb_zcopy_clear() we need to ensure this rule,
therefore we need to move the test from sk_stream_alloc_skb()
to sk_wmem_free_skb()
Fixes: 4f661542a402 ("tcp: fix zerocopy and notsent_lowat issues")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Diagnosed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Just hook get_link to standard ethtool_op_get_link,
nothing special needed at this point.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The fact that the Tx SG flag is fixed to 'on' is only
an oversight. Non-SG mode is also supported. Fix this
by allowing to turn SG off.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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For the unlikely case of TxBD extensions (i.e. ptp)
the driver tries to unmap the tx_swbd corresponding
to the extension, which is bogus as it has no buffer
attached.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add rcu locks when accessing netdev when processing route request
and tunnel keep alive messages received from hardware.
Fixes: 8e6a9046b66a ("nfp: flower vxlan neighbour offload")
Fixes: 856f5b135758 ("nfp: flower vxlan neighbour keep-alive")
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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BUG: unable to handle kernel paging request at ffffffffa018f000
PGD 3270067 P4D 3270067 PUD 3271063 PMD 2307eb067 PTE 0
Oops: 0000 [#1] PREEMPT SMP
CPU: 0 PID: 4138 Comm: modprobe Not tainted 5.1.0-rc7+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.9.3-0-ge2fc41e-prebuilt.qemu-project.org 04/01/2014
RIP: 0010:ppp_register_compressor+0x3e/0xd0 [ppp_generic]
Code: 98 4a 3f e2 48 8b 15 c1 67 00 00 41 8b 0c 24 48 81 fa 40 f0 19 a0
75 0e eb 35 48 8b 12 48 81 fa 40 f0 19 a0 74
RSP: 0018:ffffc90000d93c68 EFLAGS: 00010287
RAX: ffffffffa018f000 RBX: ffffffffa01a3000 RCX: 000000000000001a
RDX: ffff888230c750a0 RSI: 0000000000000000 RDI: ffffffffa019f000
RBP: ffffc90000d93c80 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffa0194080
R13: ffff88822ee1a700 R14: 0000000000000000 R15: ffffc90000d93e78
FS: 00007f2339557540(0000) GS:ffff888237a00000(0000)
knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffa018f000 CR3: 000000022bde4000 CR4: 00000000000006f0
Call Trace:
? 0xffffffffa01a3000
deflate_init+0x11/0x1000 [ppp_deflate]
? 0xffffffffa01a3000
do_one_initcall+0x6c/0x3cc
? kmem_cache_alloc_trace+0x248/0x3b0
do_init_module+0x5b/0x1f1
load_module+0x1db1/0x2690
? m_show+0x1d0/0x1d0
__do_sys_finit_module+0xc5/0xd0
__x64_sys_finit_module+0x15/0x20
do_syscall_64+0x6b/0x1d0
entry_SYSCALL_64_after_hwframe+0x49/0xbe
If ppp_deflate fails to register in deflate_init,
module initialization failed out, however
ppp_deflate_draft may has been regiestred and not
unregistered before return.
Then the seconed modprobe will trigger crash like this.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Errors are negative numbers. Using %u shows them as very large positive
numbers such as 4294967277 that don't make sense. Use the %d format
instead, and get a much nicer -19.
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Fixes: b48e0bab142f ("net: macb: Migrate to devm clock interface")
Fixes: 93b31f48b3ba ("net/macb: unify clock management")
Fixes: 421d9df0628b ("net/macb: merge at91_ether driver into macb driver")
Fixes: aead88bd0e99 ("net: ethernet: macb: Add support for rx_clk")
Fixes: f5473d1d44e4 ("net: macb: Support clock management for tsu_clk")
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, nla_put_iflink() doesn't put the IFLA_LINK attribute when
iflink == ifindex.
In some cases, a device can be created in a different netns with the
same ifindex as its parent. That device will not dump its IFLA_LINK
attribute, which can confuse some userspace software that expects it.
For example, if the last ifindex created in init_net and foo are both
8, these commands will trigger the issue:
ip link add parent type dummy # ifindex 9
ip link add link parent netns foo type macvlan # ifindex 9 in ns foo
So, in case a device puts the IFLA_LINK_NETNSID attribute in a dump,
always put the IFLA_LINK attribute as well.
Thanks to Dan Winship for analyzing the original OpenShift bug down to
the missing netlink attribute.
v2: change Fixes tag, it's been here forever, as Nicolas Dichtel said
add Nicolas' ack
v3: change Fixes tag
fix subject typo, spotted by Edward Cree
Analyzed-by: Dan Winship <danw@redhat.com>
Fixes: d8a5ec672768 ("[NET]: netlink support for moving devices between network namespaces.")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The error print within mlx4_flow_steer_promisc_add() should
be a info print.
Fixes: 592e49dda812 ('net/mlx4: Implement promiscuous mode with device managed flow-steering')
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Samuel clearly hasn't been working on this in many years and
patches getting to the wireless list are just being ignored
entirely now. Mark the subsystem as orphan to reflect the
current state and revert back to the netdev list so at least
some fixes can be picked up by Dave.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jiri reported that with a kernel built with CONFIG_FIXED_PHY=y,
CONFIG_NET_DSA=m and CONFIG_NET_DSA_LOOP=m, we would not get to a
functional state where the mock-up driver is registered. Turns out that
we are not descending into drivers/net/dsa/ unconditionally, and we
won't be able to link-in dsa_loop_bdinfo.o which does the actual mock-up
mdio device registration.
Reported-by: Jiri Pirko <jiri@resnulli.us>
Fixes: 40013ff20b1b ("net: dsa: Fix functional dsa-loop dependency on FIXED_PHY")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@gmail.com>
Tested-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit c7d13c8faa74 ("tcp: properly track retry time on
passive Fast Open") sets the start of SYNACK retransmission
time on passive Fast Open in "retrans_stamp". However the
timestamp is not reset upon the handshake has completed. As a
result, future data packet retransmission may not update it in
tcp_retransmit_skb(). This may lead to socket aborting earlier
unexpectedly by retransmits_timed_out() since retrans_stamp remains
the SYNACK rtx time.
This bug only manifests on passive TFO sender that a) suffered
SYNACK timeout and then b) stalls on very first loss recovery. Any
successful loss recovery would reset the timestamp to avoid this
issue.
Fixes: c7d13c8faa74 ("tcp: properly track retry time on passive Fast Open")
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull virtio updates from Michael Tsirkin:
- enable packed ring support for s390
- several fixes
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio/s390: enable packed ring
virtio/s390: DMA support for virtio-ccw
virtio/s390: use vring_create_virtqueue
virtio/virtio_ring: do some comment fixes
vhost-scsi: remove incorrect memory barrier
tools/virtio/ringtest: Remove bogus definition of BUG_ON()
virtio_ring: Fix potential mem leak in virtqueue_add_indirect_packed
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Commit f1b5618e013a ("vfs: Add a sample program for the new mount API")
added sample programs that get built during the kernel build, but then
cause 'git status' to worry about whether the resulting binaries should
be managed by git.
Tell git not to worry, and to ignore the sample binaries.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull more parisc updates from Helge Deller:
"Two small enhancements, which I didn't included in the last pull
request because I wanted to keep them a few more days in for-next
before sending upstream:
- Replace the ldcw barrier instruction by a nop instruction in the
CAS code on uniprocessor machines.
- Map variables read-only after init (enable ro_after_init feature)"
* 'parisc-5.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Use __ro_after_init in init.c
parisc: Use __ro_after_init in unwind.c
parisc: Use __ro_after_init in time.c
parisc: Use __ro_after_init in processor.c
parisc: Use __ro_after_init in process.c
parisc: Use __ro_after_init in perf_images.h
parisc: Use __ro_after_init in pci.c
parisc: Use __ro_after_init in inventory.c
parisc: Use __ro_after_init in head.S
parisc: Use __ro_after_init in firmware.c
parisc: Use __ro_after_init in drivers.c
parisc: Use __ro_after_init in cache.c
parisc: Enable the ro_after_init feature
parisc: Drop LDCW barrier in CAS code when running UP
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git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux
Pull kgdb updates from Daniel Thompson:
"Mostly cleanups but there are also a couple of fixes for out-of-bounds
accesses (including a potential write to the byte before a static
buffer).
The main changes are:
- Fixes to those out-of-bounds access (empty string to configure test
module could write the byte before a buffer, high cpu counts could
read outside of per-cpu structures).
- Improvements to string handling problems picked up by new compiler
warnings and other static checks. Most are fixing benign issues
that can't be tickled without code changes but still reduce the wtf
factor a little.
- Tidy up the terminal output"
* tag 'kgdb-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux:
kdb: Fix bound check compiler warning
kdb: do a sanity check on the cpu in kdb_per_cpu()
kdb: Get rid of broken attempt to print CCVERSION in kdb summary
misc: kgdbts: fix out-of-bounds access in function param_set_kgdbts_var
kdb: kdb_support: replace strcpy() by strscpy()
gdbstub: Replace strcpy() by strscpy()
gdbstub: mark expected switch fall-throughs
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git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull modules updates from Jessica Yu:
- Use a separate table to store symbol types instead of hijacking
fields in struct Elf_Sym
- Trivial code cleanups
* tag 'modules-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
module: add stubs for within_module functions
kallsyms: store type information in its own array
vmlinux.lds.h: drop unused __vermagic
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Daniel Borkmann says:
====================
This set fixes LRU map eviction in combination with map lookups out
of system call side from user space. Main patch is the second one and
test cases are adapted and added in the last one. Thanks!
====================
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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The test_lru_map is relying on marking the LRU map entry via regular
BPF map lookup from system call side. This is basically for simplicity
reasons. Given we fixed marking entries in that case, the test needs
to be fixed as well. Here we add a small drop-in replacement to retain
existing behavior for the tests by marking out of the BPF program and
transferring the retrieved value out via temporary map. This also adds
new test cases to track the new behavior where two elements are marked,
one via system call side and one via program side, where the next update
then evicts the key looked up only from system call side.
# ./test_lru_map
nr_cpus:8
test_lru_sanity0 (map_type:9 map_flags:0x0): Pass
test_lru_sanity1 (map_type:9 map_flags:0x0): Pass
test_lru_sanity2 (map_type:9 map_flags:0x0): Pass
test_lru_sanity3 (map_type:9 map_flags:0x0): Pass
test_lru_sanity4 (map_type:9 map_flags:0x0): Pass
test_lru_sanity5 (map_type:9 map_flags:0x0): Pass
test_lru_sanity7 (map_type:9 map_flags:0x0): Pass
test_lru_sanity8 (map_type:9 map_flags:0x0): Pass
test_lru_sanity0 (map_type:10 map_flags:0x0): Pass
test_lru_sanity1 (map_type:10 map_flags:0x0): Pass
test_lru_sanity2 (map_type:10 map_flags:0x0): Pass
test_lru_sanity3 (map_type:10 map_flags:0x0): Pass
test_lru_sanity4 (map_type:10 map_flags:0x0): Pass
test_lru_sanity5 (map_type:10 map_flags:0x0): Pass
test_lru_sanity7 (map_type:10 map_flags:0x0): Pass
test_lru_sanity8 (map_type:10 map_flags:0x0): Pass
test_lru_sanity0 (map_type:9 map_flags:0x2): Pass
test_lru_sanity4 (map_type:9 map_flags:0x2): Pass
test_lru_sanity6 (map_type:9 map_flags:0x2): Pass
test_lru_sanity7 (map_type:9 map_flags:0x2): Pass
test_lru_sanity8 (map_type:9 map_flags:0x2): Pass
test_lru_sanity0 (map_type:10 map_flags:0x2): Pass
test_lru_sanity4 (map_type:10 map_flags:0x2): Pass
test_lru_sanity6 (map_type:10 map_flags:0x2): Pass
test_lru_sanity7 (map_type:10 map_flags:0x2): Pass
test_lru_sanity8 (map_type:10 map_flags:0x2): Pass
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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One of the biggest issues we face right now with picking LRU map over
regular hash table is that a map walk out of user space, for example,
to just dump the existing entries or to remove certain ones, will
completely mess up LRU eviction heuristics and wrong entries such
as just created ones will get evicted instead. The reason for this
is that we mark an entry as "in use" via bpf_lru_node_set_ref() from
system call lookup side as well. Thus upon walk, all entries are
being marked, so information of actual least recently used ones
are "lost".
In case of Cilium where it can be used (besides others) as a BPF
based connection tracker, this current behavior causes disruption
upon control plane changes that need to walk the map from user space
to evict certain entries. Discussion result from bpfconf [0] was that
we should simply just remove marking from system call side as no
good use case could be found where it's actually needed there.
Therefore this patch removes marking for regular LRU and per-CPU
flavor. If there ever should be a need in future, the behavior could
be selected via map creation flag, but due to mentioned reason we
avoid this here.
[0] http://vger.kernel.org/bpfconf.html
Fixes: 29ba732acbee ("bpf: Add BPF_MAP_TYPE_LRU_HASH")
Fixes: 8f8449384ec3 ("bpf: Add BPF_MAP_TYPE_LRU_PERCPU_HASH")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add a callback map_lookup_elem_sys_only() that map implementations
could use over map_lookup_elem() from system call side in case the
map implementation needs to handle the latter differently than from
the BPF data path. If map_lookup_elem_sys_only() is set, this will
be preferred pick for map lookups out of user space. This hook is
used in a follow-up fix for LRU map, but once development window
opens, we can convert other map types from map_lookup_elem() (here,
the one called upon BPF_MAP_LOOKUP_ELEM cmd is meant) over to use
the callback to simplify and clean up the latter.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight updates from Lee Jones:
"Fix-ups:
- Remove unused BACKLIGHT_LCD_SUPPORT symbol
- Remove unused BACKLIGHT_CLASS_DEVICE dependencies
- Add DT support to lm3630a_bl
Bug Fixes:
- Fix error path issues in lm3630a_bl"
* tag 'backlight-next-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: lm3630a: Add firmware node support
dt-bindings: backlight: Add lm3630a bindings
backlight: lm3630a: Return 0 on success in update_status functions
video: lcd: Remove useless BACKLIGHT_CLASS_DEVICE dependencies
video: backlight: Remove useless BACKLIGHT_LCD_SUPPORT kernel symbol
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"Core Framework:
- Document (kerneldoc) core mfd_add_devices() API
New Drivers:
- Altera SOCFPGA System Manager
- Maxim MAX77650/77651 PMIC
- Maxim MAX77663 PMIC
- ST Multi-Function eXpander (STMFX)
New Device Support:
- LEDs support in Intel Cherry Trail Whiskey Cove PMIC
- RTC support in SAMSUNG Electronics S2MPA01 PMIC
- SAM9X60 support in Atmel HLCDC (High-end LCD Controller)
- USB X-Powers AXP 8xx PMICs
- Integrated Sensor Hub (ISH) in ChromeOS EC
- USB PD Logger in ChromeOS EC
- AXP223 in X-Powers AXP series PMICs
- Power Supply in X-Powers AXP 803 PMICs
- Comet Lake in Intel Low Power Subsystem
- Fingerprint MCU in ChromeOS EC
- Touchpad MCU in ChromeOS EC
- Move TI LM3532 support to LED
New Functionality:
- max77650, max77620: Add/extend DT support
- max77620 power-off
- syscon clocking
- croc_ec host sleep event
Fix-ups:
- Trivial; Formatting, spelling, etc; Kconfig, sec-core, ab8500-debugfs
- Remove unused functionality; rk808, da9063-*
- SPDX conversion; da9063-*, atmel-*,
- Adapt/add new register definitions; cs47l35-tables, cs47l90-tables, imx6q-iomuxc-gpr
- Fix-up DT bindings; ti-lmu, cirrus,lochnagar
- Simply obtaining driver data; ssbi, t7l66xb, tc6387xb, tc6393xb
Bug Fixes:
- Fix incorrect defined values; max77620, da9063
- Fix device initialisation; twl6040
- Reset device on init; intel-lpss
- Fix build warnings when !OF; sun6i-prcm
- Register OF match tables; tps65912-spi
- Fix DMI matching; intel_quark_i2c_gpio"
* tag 'mfd-next-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (65 commits)
mfd: Use dev_get_drvdata() directly
mfd: cros_ec: Instantiate properly CrOS Touchpad MCU device
mfd: cros_ec: Instantiate properly CrOS FP MCU device
mfd: cros_ec: Update the EC feature codes
mfd: intel-lpss: Add Intel Comet Lake PCI IDs
mfd: lochnagar: Add links to binding docs for sound and hwmon
mfd: ab8500-debugfs: Fix a typo ("deubgfs")
mfd: imx6sx: Add MQS register definition for iomuxc gpr
dt-bindings: mfd: LMU: Fix lm3632 dt binding example
mfd: intel_quark_i2c_gpio: Adjust IOT2000 matching
mfd: da9063: Fix OTP control register names to match datasheets for DA9063/63L
mfd: tps65912-spi: Add missing of table registration
mfd: axp20x: Add USB power supply mfd cell to AXP803
mfd: sun6i-prcm: Fix build warning for non-OF configurations
mfd: intel-lpss: Set the device in reset state when init
platform/chrome: Add support for v1 of host sleep event
mfd: cros_ec: Add host_sleep_event_v1 command
mfd: cros_ec: Instantiate the CrOS USB PD logger driver
mfd: cs47l90: Make DAC_AEC_CONTROL_2 readable
mfd: cs47l35: Make DAC_AEC_CONTROL_2 readable
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration changes:
- Add _HPX Type 3 settings support, which gives firmware more
influence over device configuration (Alexandru Gagniuc)
- Support fixed bus numbers from bridge Enhanced Allocation
capabilities (Subbaraya Sundeep)
- Add "external-facing" DT property to identify cases where we
require IOMMU protection against untrusted devices (Jean-Philippe
Brucker)
- Enable PCIe services for host controller drivers that use managed
host bridge alloc (Jean-Philippe Brucker)
- Log PCIe port service messages with pci_dev, not the pcie_device
(Frederick Lawler)
- Convert pciehp from pciehp_debug module parameter to generic
dynamic debug (Frederick Lawler)
Peer-to-peer DMA:
- Add whitelist of Root Complexes that support peer-to-peer DMA
between Root Ports (Christian König)
Native controller drivers:
- Add PCI host bridge DMA ranges for bridges that can't DMA
everywhere, e.g., iProc (Srinath Mannam)
- Add Amazon Annapurna Labs PCIe host controller driver (Jonathan
Chocron)
- Fix Tegra MSI target allocation so DMA doesn't generate unwanted
MSIs (Vidya Sagar)
- Fix of_node reference leaks (Wen Yang)
- Fix Hyper-V module unload & device removal issues (Dexuan Cui)
- Cleanup R-Car driver (Marek Vasut)
- Cleanup Keystone driver (Kishon Vijay Abraham I)
- Cleanup i.MX6 driver (Andrey Smirnov)
Significant bug fixes:
- Reset Lenovo ThinkPad P50 GPU so nouveau works after reboot (Lyude
Paul)
- Fix Switchtec firmware update performance issue (Wesley Sheng)
- Work around Pericom switch link retraining erratum (Stefan Mätje)"
* tag 'pci-v5.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (141 commits)
MAINTAINERS: Add Karthikeyan Mitran and Hou Zhiqiang for Mobiveil PCI
PCI: pciehp: Remove pointless MY_NAME definition
PCI: pciehp: Remove pointless PCIE_MODULE_NAME definition
PCI: pciehp: Remove unused dbg/err/info/warn() wrappers
PCI: pciehp: Log messages with pci_dev, not pcie_device
PCI: pciehp: Replace pciehp_debug module param with dyndbg
PCI: pciehp: Remove pciehp_debug uses
PCI/AER: Log messages with pci_dev, not pcie_device
PCI/DPC: Log messages with pci_dev, not pcie_device
PCI/PME: Replace dev_printk(KERN_DEBUG) with dev_info()
PCI/AER: Replace dev_printk(KERN_DEBUG) with dev_info()
PCI: Replace dev_printk(KERN_DEBUG) with dev_info(), etc
PCI: Replace printk(KERN_INFO) with pr_info(), etc
PCI: Use dev_printk() when possible
PCI: Cleanup setup-bus.c comments and whitespace
PCI: imx6: Allow asynchronous probing
PCI: dwc: Save root bus for driver remove hooks
PCI: dwc: Use devm_pci_alloc_host_bridge() to simplify code
PCI: dwc: Free MSI in dw_pcie_host_init() error path
PCI: dwc: Free MSI IRQ page in dw_pcie_free_msi()
...
|
|
Merge misc updates from Andrew Morton:
- a few misc things and hotfixes
- ocfs2
- almost all of MM
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (139 commits)
kernel/memremap.c: remove the unused device_private_entry_fault() export
mm: delete find_get_entries_tag
mm/huge_memory.c: make __thp_get_unmapped_area static
mm/mprotect.c: fix compilation warning because of unused 'mm' variable
mm/page-writeback: introduce tracepoint for wait_on_page_writeback()
mm/vmscan: simplify trace_reclaim_flags and trace_shrink_flags
mm/Kconfig: update "Memory Model" help text
mm/vmscan.c: don't disable irq again when count pgrefill for memcg
mm: memblock: make keeping memblock memory opt-in rather than opt-out
hugetlbfs: always use address space in inode for resv_map pointer
mm/z3fold.c: support page migration
mm/z3fold.c: add structure for buddy handles
mm/z3fold.c: improve compression by extending search
mm/z3fold.c: introduce helper functions
mm/page_alloc.c: remove unnecessary parameter in rmqueue_pcplist
mm/hmm: add ARCH_HAS_HMM_MIRROR ARCH_HAS_HMM_DEVICE Kconfig
mm/vmscan.c: simplify shrink_inactive_list()
fs/sync.c: sync_file_range(2) may use WB_SYNC_ALL writeback
xen/privcmd-buf.c: convert to use vm_map_pages_zero()
xen/gntdev.c: convert to use vm_map_pages()
...
|
|
This export has been entirely unused since it was added more than 1 1/2
years ago.
Link: http://lkml.kernel.org/r/20190429115535.12793-1-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
I removed the only user of this and hadn't noticed it was now unused.
Link: http://lkml.kernel.org/r/20190430152929.21813-1-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Ross Zwisler <zwisler@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
__thp_get_unmapped_area is only used in mm/huge_memory.c. Make it static.
Tested by building and booting the kernel.
Link: http://lkml.kernel.org/r/20190504102353.GA22525@bharath12345-Inspiron-5559
Signed-off-by: Bharath Vedartham <linux.bhar@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Since 0cbe3e26abe0 ("mm: update ptep_modify_prot_start/commit to take
vm_area_struct as arg") the only place that uses the local 'mm' variable
in change_pte_range() is the call to set_pte_at().
Many architectures define set_pte_at() as macro that does not use the 'mm'
parameter, which generates the following compilation warning:
CC mm/mprotect.o
mm/mprotect.c: In function 'change_pte_range':
mm/mprotect.c:42:20: warning: unused variable 'mm' [-Wunused-variable]
struct mm_struct *mm = vma->vm_mm;
^~
Fix it by passing vma->mm to set_pte_at() and dropping the local 'mm'
variable in change_pte_range().
[liu.song.a23@gmail.com: fix missed conversions]
Link: http://lkml.kernel.org/r/CAPhsuW6wcQgYLHNdBdw6m0YiR4RWsS4XzfpSKU7wBLLeOCTbpw@mail.gmail.comLink: http://lkml.kernel.org/r/1557305432-4940-1-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Song Liu <liu.song.a23@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Recently there have been some hung tasks on our server due to
wait_on_page_writeback(), and we want to know the details of this
PG_writeback, i.e. this page is writing back to which device. But it is
not so convenient to get the details.
I think it would be better to introduce a tracepoint for diagnosing the
writeback details.
Link: http://lkml.kernel.org/r/1556274402-19018-1-git-send-email-laoar.shao@gmail.com
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Jan Kara <jack@suse.cz>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
trace_reclaim_flags and trace_shrink_flags are almost the same.
We can simplify them to avoid redundant code.
Link: http://lkml.kernel.org/r/1556169203-5858-1-git-send-email-laoar.shao@gmail.com
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
The help describing the memory model selection is outdated. It still says
that SPARSEMEM is experimental and DISCONTIGMEM is a preferred over
SPARSEMEM.
Update the help text for the relevant options:
* add a generic help for the "Memory Model" prompt
* add description for FLATMEM
* reduce the description of DISCONTIGMEM and add a deprecation note
* prefer SPARSEMEM over DISCONTIGMEM
Link: http://lkml.kernel.org/r/1556188531-20728-1-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
We can use __count_memcg_events() directly because this callsite is alreay
protected by spin_lock_irq().
Link: http://lkml.kernel.org/r/1556093494-30798-1-git-send-email-laoar.shao@gmail.com
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
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Most architectures do not need the memblock memory after the page
allocator is initialized, but only few enable ARCH_DISCARD_MEMBLOCK in the
arch Kconfig.
Replacing ARCH_DISCARD_MEMBLOCK with ARCH_KEEP_MEMBLOCK and inverting the
logic makes it clear which architectures actually use memblock after
system initialization and skips the necessity to add ARCH_DISCARD_MEMBLOCK
to the architectures that are still missing that option.
Link: http://lkml.kernel.org/r/1556102150-32517-1-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Continuing discussion about 58b6e5e8f1ad ("hugetlbfs: fix memory leak for
resv_map") brought up the issue that inode->i_mapping may not point to the
address space embedded within the inode at inode eviction time. The
hugetlbfs truncate routine handles this by explicitly using inode->i_data.
However, code cleaning up the resv_map will still use the address space
pointed to by inode->i_mapping. Luckily, private_data is NULL for address
spaces in all such cases today but, there is no guarantee this will
continue.
Change all hugetlbfs code getting a resv_map pointer to explicitly get it
from the address space embedded within the inode. In addition, add more
comments in the code to indicate why this is being done.
Link: http://lkml.kernel.org/r/20190419204435.16984-1-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reported-by: Yufen Yu <yuyufen@huawei.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Now that we are not using page address in handles directly, we can make
z3fold pages movable to decrease the memory fragmentation z3fold may
create over time.
This patch starts advertising non-headless z3fold pages as movable and
uses the existing kernel infrastructure to implement moving of such pages
per memory management subsystem's request. It thus implements 3 required
callbacks for page migration:
* isolation callback: z3fold_page_isolate(): try to isolate the page by
removing it from all lists. Pages scheduled for some activity and
mapped pages will not be isolated. Return true if isolation was
successful or false otherwise
* migration callback: z3fold_page_migrate(): re-check critical
conditions and migrate page contents to the new page provided by the
memory subsystem. Returns 0 on success or negative error code otherwise
* putback callback: z3fold_page_putback(): put back the page if
z3fold_page_migrate() for it failed permanently (i. e. not with
-EAGAIN code).
[lkp@intel.com: z3fold_page_isolate() can be static]
Link: http://lkml.kernel.org/r/20190419130924.GA161478@ivb42
Link: http://lkml.kernel.org/r/20190417103922.31253da5c366c4ebe0419cfc@gmail.com
Signed-off-by: Vitaly Wool <vitaly.vul@sony.com>
Signed-off-by: kbuild test robot <lkp@intel.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Cc: Uladzislau Rezki <urezki@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
For z3fold to be able to move its pages per request of the memory
subsystem, it should not use direct object addresses in handles. Instead,
it will create abstract handles (3 per page) which will contain pointers
to z3fold objects. Thus, it will be possible to change these pointers
when z3fold page is moved.
Link: http://lkml.kernel.org/r/20190417103826.484eaf18c1294d682769880f@gmail.com
Signed-off-by: Vitaly Wool <vitaly.vul@sony.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Cc: Uladzislau Rezki <urezki@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
The current z3fold implementation only searches this CPU's page lists for
a fitting page to put a new object into. This patch adds quick search for
very well fitting pages (i. e. those having exactly the required number
of free space) on other CPUs too, before allocating a new page for that
object.
Link: http://lkml.kernel.org/r/20190417103733.72ae81abe1552397c95a008e@gmail.com
Signed-off-by: Vitaly Wool <vitaly.vul@sony.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Cc: Uladzislau Rezki <urezki@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Patch series "z3fold: support page migration", v2.
This patchset implements page migration support and slightly better buddy
search. To implement page migration support, z3fold has to move away from
the current scheme of handle encoding. i. e. stop encoding page address
in handles. Instead, a small per-page structure is created which will
contain actual addresses for z3fold objects, while pointers to fields of
that structure will be used as handles.
Thus, it will be possible to change the underlying addresses to reflect
page migration.
To support migration itself, 3 callbacks will be implemented:
1: isolation callback: z3fold_page_isolate(): try to isolate the page
by removing it from all lists. Pages scheduled for some activity and
mapped pages will not be isolated. Return true if isolation was
successful or false otherwise
2: migration callback: z3fold_page_migrate(): re-check critical
conditions and migrate page contents to the new page provided by the
system. Returns 0 on success or negative error code otherwise
3: putback callback: z3fold_page_putback(): put back the page if
z3fold_page_migrate() for it failed permanently (i. e. not with
-EAGAIN code).
To make sure an isolated page doesn't get freed, its kref is incremented
in z3fold_page_isolate() and decremented during post-migration compaction,
if migration was successful, or by z3fold_page_putback() in the other
case.
Since the new handle encoding scheme implies slight memory consumption
increase, better buddy search (which decreases memory consumption) is
included in this patchset.
This patch (of 4):
Introduce a separate helper function for object allocation, as well as 2
smaller helpers to add a buddy to the list and to get a pointer to the
pool from the z3fold header. No functional changes here.
Link: http://lkml.kernel.org/r/20190417103633.a4bb770b5bf0fb7e43ce1666@gmail.com
Signed-off-by: Vitaly Wool <vitaly.vul@sony.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Cc: Uladzislau Rezki <urezki@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Because rmqueue_pcplist() is only called when order is 0, we don't need to
use order as a parameter.
Link: http://lkml.kernel.org/r/1555591709-11744-1-git-send-email-laoar.shao@gmail.com
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Pankaj Gupta <pagupta@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Add 2 new Kconfig variables that are not used by anyone. I check that
various make ARCH=somearch allmodconfig do work and do not complain. This
new Kconfig needs to be added first so that device drivers that depend on
HMM can be updated.
Once drivers are updated then I can update the HMM Kconfig to depend on
this new Kconfig in a followup patch.
This is about solving Kconfig for HMM given that device driver are
going through their own tree we want to avoid changing them from the mm
tree. So plan is:
1 - Kernel release N add the new Kconfig to mm/Kconfig (this patch)
2 - Kernel release N+1 update driver to depend on new Kconfig ie
stop using ARCH_HASH_HMM and start using ARCH_HAS_HMM_MIRROR
and ARCH_HAS_HMM_DEVICE (one or the other or both depending
on the driver)
3 - Kernel release N+2 remove ARCH_HASH_HMM and do final Kconfig
update in mm/Kconfig
Link: http://lkml.kernel.org/r/20190417211141.17580-1-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
This merges together duplicated patterns of code. Also, replace
count_memcg_events() with its irq-careless namesake, because they are
already called in interrupts disabled context.
Link: http://lkml.kernel.org/r/2ece1df4-2989-bc9b-6172-61e9fdde5bfd@virtuozzo.com
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
23d0127096cb ("fs/sync.c: make sync_file_range(2) use WB_SYNC_NONE
writeback") claims that sync_file_range(2) syscall was "created for
userspace to be able to issue background writeout and so waiting for
in-flight IO is undesirable there" and changes the writeback (back) to
WB_SYNC_NONE.
This claim is only partially true. It is true for users that use the flag
SYNC_FILE_RANGE_WRITE by itself, as does PostgreSQL, the user that was the
reason for changing to WB_SYNC_NONE writeback.
However, that claim is not true for users that use that flag combination
SYNC_FILE_RANGE_{WAIT_BEFORE|WRITE|_WAIT_AFTER}. Those users explicitly
requested to wait for in-flight IO as well as to writeback of dirty pages.
Re-brand that flag combination as SYNC_FILE_RANGE_WRITE_AND_WAIT and use
WB_SYNC_ALL writeback to perform the full range sync request.
Link: http://lkml.kernel.org/r/20190409114922.30095-1-amir73il@gmail.com
Link: http://lkml.kernel.org/r/20190419072938.31320-1-amir73il@gmail.com
Fixes: 23d0127096cb ("fs/sync.c: make sync_file_range(2) use WB_SYNC_NONE")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Acked-by: Jan Kara <jack@suse.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Convert to use vm_map_pages_zero() to map range of kernel memory to user
vma.
This driver has ignored vm_pgoff. We could later "fix" these drivers to
behave according to the normal vm_pgoff offsetting simply by removing the
_zero suffix on the function name and if that causes regressions, it gives
us an easy way to revert.
Link: http://lkml.kernel.org/r/acf678e81d554d01a9b590716ac0ccbdcdf71c25.1552921225.git.jrdr.linux@gmail.com
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Cc: Pawel Osciak <pawel@osciak.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Sandy Huang <hjc@rock-chips.com>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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