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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build fix from Ingo Molnar:
"A bzImage build fix on older distros"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vdso: Fix 'make bzImage' on older distros
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Replacing %lu format strings for Dwarf_Addr type with PRIu64 as it fits
for Dwarf_Addr (defined as uint64_t) type and works also on both 32/64
bits.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1431706991-15646-1-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Two fixes: a suspend/resume related regression fix, and an RT priority
boosting fix"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/core: Fix regression in cpuset_cpu_inactive() for suspend
sched: Handle priority boosted tasks proper in setscheduler()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Mostly tooling fixes, but also a lockdep annotation fix, a PMU event
list fix and a new model addition"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tools/liblockdep: Fix compilation error
tools/liblockdep: Fix linker error in case of cross compile
perf tools: Use getconf to determine number of online CPUs
tools: Fix tools/vm build
perf/x86/rapl: Enable Broadwell-U RAPL support
perf/x86/intel: Fix SLM cache event list
perf: Annotate inherited event ctx->mutex recursion
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Ingo Molnar:
"A tegra irqchip driver memory corruption fix"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: tegra: Set the proper base address in irq chip data
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Now that we have atomic.h, we should convert all of the existing
refcounts to use it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-t3v2uma5digcj2tpkrs3m84u@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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In compliance with RFC5961, the network stack send challenge ACK in
response to spurious SYN packets, since commit 0c228e833c88 ("tcp:
Restore RFC5961-compliant behavior for SYN packets").
This pose a problem for netfilter conntrack in state LAST_ACK, because
this challenge ACK is (falsely) seen as ACKing last FIN, causing a
false state transition (into TIME_WAIT).
The challenge ACK is hard to distinguish from real last ACK. Thus,
solution introduce a flag that tracks the potential for seeing a
challenge ACK, in case a SYN packet is let through and current state
is LAST_ACK.
When conntrack transition LAST_ACK to TIME_WAIT happens, this flag is
used for determining if we are expecting a challenge ACK.
Scapy based reproducer script avail here:
https://github.com/netoptimizer/network-testing/blob/master/scapy/tcp_hacks_3WHS_LAST_ACK.py
Fixes: 0c228e833c88 ("tcp: Restore RFC5961-compliant behavior for SYN packets")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Now that we have atomic.h, we should convert all of the existing
refcounts to use it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-qhpv2etncj3hfofgj1aitkyv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Pull drm fixes from Dave Airlie:
"Radeon:
one oops fix, one bug fix, one pci id addition patch
i915:
one suspend/resume regression fix.
All seems quiet enough."
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/radeon: don't do mst probing if MST isn't enabled.
drm/radeon: add new bonaire pci id
drm/radeon: fix VM_CONTEXT*_PAGE_TABLE_END_ADDR handling
drm/i915: Avoid GPU hang when coming out of s3 or s4
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Use atomic_read(&counter) instead.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-k3hvfvpaut8wp02lzq27muhb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Now that we have atomic.h, we should convert all of the existing
refcounts to use it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-onm5u3pioba1hqqhjs8on03e@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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With TPROXY=y but DEFRAG_IPV6=m we get build failure:
net/built-in.o: In function `tproxy_tg_init':
net/netfilter/xt_TPROXY.c:588: undefined reference to `nf_defrag_ipv6_enable'
If DEFRAG_IPV6 is modular, TPROXY must be too.
(or both must be builtin).
This enforces =m for both.
Reported-and-tested-by: Liu Hua <liusdu@126.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Merge misc fixes from Andrew Morton:
"8 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm, numa: really disable NUMA balancing by default on single node machines
MAINTAINERS: update Jingoo Han's email address
CMA: page_isolation: check buddy before accessing it
uidgid: make uid_valid and gid_valid work with !CONFIG_MULTIUSER
kernfs: do not account ino_ida allocations to memcg
gfp: add __GFP_NOACCOUNT
tools/vm: fix page-flags build
drivers/rtc/rtc-armada38x.c: remove unused local `flags'
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Describe the handler for RXUBR better with a new comment.
Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com>
Reviewied-by: Josh Cartwright <joshc@ni.com>
Reviewied-by: Ben Shelton <ben.shelton@ni.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
Merge "Samsung 2nd fixes for v4.1" from Kukjin Kim:
- fix second S2R on exynos4412 based Trats2, Odroid U3 boards which
happened after enabling L2$ and caused by commit 13cfa6c4f7fa ("ARM:
EXYNOS: Fix CPU idle clock down after CPU off")
And replace the soc_is_exynosxxx() macro with of_compatible_xxx
- fix dereference of ERR_PTR of of_genpd_get_from_provider()
- fix suspend problem on old DT machines to skip the initialization
suspend and caused by commit 8b283c025443 ("ARM: exynos4/5: convert
pmu wakeup to stacked domains")
- add keep-power-in-suspend for Peach Boards to support S2R and has
been missed in previous pull-request for fixes
* tag 'samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: EXYNOS: Use of_machine_is_compatible instead of soc_is_exynos4
ARM: EXYNOS: Fix failed second suspend on Exynos4
ARM: EXYNOS: Fix dereference of ERR_PTR returned by of_genpd_get_from_provider
ARM: EXYNOS: Don't try to initialize suspend on old DT
ARM: dts: Add keep-power-in-suspend to WiFi SDIO node for Peach Boards
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Merge "mvebu fixes for 4.1 (part 2)" from Gregory CLEMENT:
Fix the main PLL frequency on Armada 375, 38x and 39x SoCs
Add clock-names to CuBox Si5351 clk generator
Add dts entries in the MAINTAINERS file
* tag 'mvebu-fixes-4.1-2' of git://git.infradead.org/linux-mvebu:
MAINTAINERS: Add dts entries for some of the Marvell SoCs
ARM: dove: Add clock-names to CuBox Si5351 clk generator
ARM: mvebu: Fix the main PLL frequency on Armada 375, 38x and 39x SoCs
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smp.c and irq_work.c implement the same inline helper. Move it to
apic.h and use it everywhere.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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In error paths, this was being called without struct_mutex held.
Leading to panics like:
msm 1a00000.qcom,mdss_mdp: No memory protection without IOMMU
Kernel panic - not syncing: BUG!
CPU: 0 PID: 1409 Comm: cat Not tainted 4.0.0-dirty #4
Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT)
Call trace:
[<ffffffc000089c78>] dump_backtrace+0x0/0x118
[<ffffffc000089da0>] show_stack+0x10/0x20
[<ffffffc0006686d4>] dump_stack+0x84/0xc4
[<ffffffc0006678b4>] panic+0xd0/0x210
[<ffffffc0003e1ce4>] drm_gem_object_free+0x5c/0x60
[<ffffffc000402870>] adreno_gpu_cleanup+0x60/0x80
[<ffffffc0004035a0>] a3xx_destroy+0x20/0x70
[<ffffffc0004036f4>] a3xx_gpu_init+0x84/0x108
[<ffffffc0004018b8>] adreno_load_gpu+0x58/0x190
[<ffffffc000419dac>] msm_open+0x74/0x88
[<ffffffc0003e0a48>] drm_open+0x168/0x400
[<ffffffc0003e7210>] drm_stub_open+0xa8/0x118
[<ffffffc0001a0e84>] chrdev_open+0x94/0x198
[<ffffffc000199f88>] do_dentry_open+0x208/0x310
[<ffffffc00019a4c4>] vfs_open+0x44/0x50
[<ffffffc0001aa26c>] do_last.isra.14+0x2c4/0xc10
[<ffffffc0001aac38>] path_openat+0x80/0x5e8
[<ffffffc0001ac354>] do_filp_open+0x2c/0x98
[<ffffffc00019b60c>] do_sys_open+0x13c/0x228
[<ffffffc00019b72c>] SyS_openat+0xc/0x18
CPU1: stopping
But there isn't any particularly good reason to hold struct_mutex for
teardown, so just standardize on calling it without the mutex held and
use the _unlocked() versions for GEM obj unref'ing
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Since many releases, the modifications of the mvebu and berlin device
tree files are merged through the mvebu subsystem. This patch makes it
official in order to help the contributors using the get_maintainer.pl
to find the accurate peoples.
In the same time, updated the mvebu description which now includes the
kirkwood SoCs and new Armada SoCs.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Andrew Lunn <andrew@lunn.ch>
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Josh Stone reports:
I've discovered a case where both arm and arm64 will miss a ptrace
syscall-exit that they should report. If the syscall is entered
without TIF_SYSCALL_TRACE set, then it goes on the fast path. It's
then possible to have TIF_SYSCALL_TRACE added in the middle of the
syscall, but ret_fast_syscall doesn't check this flag again.
Fix this by always checking for a syscall trace in the fast exit path.
Reported-by: Josh Stone <jistone@redhat.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The following NOP in a hot function caught my attention:
> 5a: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
That's a dead NOP that bloats the function a bit, added for the
default 16-byte alignment that GCC applies for jump targets.
I realize that x86 CPU manufacturers recommend 16-byte jump
target alignments (it's in the Intel optimization manual),
to help their relatively narrow decoder prefetch alignment
and uop cache constraints, but the cost of that is very
significant:
text data bss dec filename
12566391 1617840 1089536 15273767 vmlinux.align.16-byte
12224951 1617840 1089536 14932327 vmlinux.align.1-byte
By using 1-byte jump target alignment (i.e. no alignment at all)
we get an almost 3% reduction in kernel size (!) - and a
probably similar reduction in I$ footprint.
Now, the usual justification for jump target alignment is the
following:
- modern decoders tend to have 16-byte (effective) decoder
prefetch windows. (AMD documents it higher but measurements
suggest the effective prefetch window on curretn uarchs is
still around 16 bytes)
- on Intel there's also the uop-cache with cachelines that have
16-byte granularity and limited associativity.
- older x86 uarchs had a penalty for decoder fetches that crossed
16-byte boundaries. These limits are mostly gone from recent
uarchs.
So if a forward jump target is aligned to cacheline boundary then
prefetches will start from a new prefetch-cacheline and there's
higher chance for decoding in fewer steps and packing tightly.
But I think that argument is flawed for typical optimized kernel
code flows: forward jumps often go to 'cold' (uncommon) pieces
of code, and aligning cold code to cache lines does not bring a
lot of advantages (they are uncommon), while it causes
collateral damage:
- their alignment 'spreads out' the cache footprint, it shifts
followup hot code further out
- plus it slows down even 'cold' code that immediately follows 'hot'
code (like in the above case), which could have benefited from the
partial cacheline that comes off the end of hot code.
But even in the cache-hot case the 16 byte alignment brings
disadvantages:
- it spreads out the cache footprint, possibly making the code
fall out of the L1 I$.
- On Intel CPUs, recent microarchitectures have plenty of
uop cache (typically doubling every 3 years) - while the
size of the L1 cache grows much less aggressively. So
workloads are rarely uop cache limited.
The only situation where alignment might matter are tight
loops that could fit into a single 16 byte chunk - but those
are pretty rare in the kernel: if they exist they tend
to be pointer chasing or generic memory ops, which both tend
to be cache miss (or cache allocation) intensive and are not
decoder bandwidth limited.
So the balance of arguments strongly favors packing kernel
instructions tightly versus maximizing for decoder bandwidth:
this patch changes the jump target alignment from 16 bytes
to 1 byte (tightly packed, unaligned).
Acked-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jason Low <jason.low2@hp.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Link: http://lkml.kernel.org/r/20150410120846.GA17101@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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A few triggers have status = MLME_SUCCESS and they are still
interesting. E.g. if we want to collect data upon deauth,
the status will be MLME_SUCCESS. Fix that.
Fixes: d42f53503406 ("iwlwifi: mvm: add trigger for firmware dump upon MLME failures")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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Disabling the clocks is a standard procedure while stopping the
device. On family 8000 however, disabling the bus master DMA clock
increases the NIC's power consumption.
To fix this, skip this call if the device family is
IWL_DEVICE_FAMILY_8000.
Signed-off-by: Avri Altman <avri.altman@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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3165 really needs to load iwlwifi-7265D-13.ucode. This
device is supported starting from -13.ucode, update the
MIN and OK defines accordingly. While at it, add 3165 to
the device list in the Kconfig file.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux into perf/urgent
Pull liblockdep fixes from Sasha Levin:
"two fixes that deal with compilation errors in liblockdep."
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
- Add --range option to show a variable's location range in 'perf probe',
helping in collecting variables in probes when there is a mismatch
between assembly and source code (He Kuang)
- Show better error message when failed to find variable in 'perf probe' (He Kuang)
- Fix 'perf report --thread' handling and document it better (Namhyung Kim)
Infrastructure changes:
- Fix to get negative exit codes in 'perf test' test routines (He Kuang)
- Make flex/bison calls honour V=1 (Jiri Olsa)
- Ignore tail calls to probed functions in 'perf probe' (Naveen N. Rao)
- Fix refcount expectations in map_group share 'perf test' (Arnaldo Carvalho de Melo)
Build Fixes:
- Fix 'perf kmem' build due to compiler thinking uninitialized var is
being accessed (Arnaldo Carvalho de Melo)
- Provide le16toh if not defined, to fix the libtraceevent build on
older distros (Arnaldo Carvalho de Melo)
- Fix 'perf trace' build on older distros by providing some CLOEXEC, NONBLOCK
defines (Arnaldo Carvalho de Melo)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://anongit.freedesktop.org/drm-intel into drm-fixes
fix one gpu hang on resume.
* tag 'drm-intel-fixes-2015-05-13' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Avoid GPU hang when coming out of s3 or s4
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into drm-fixes
radeon minor fixes, and pci id addition.
* 'drm-fixes-4.1' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon: don't do mst probing if MST isn't enabled.
drm/radeon: add new bonaire pci id
drm/radeon: fix VM_CONTEXT*_PAGE_TABLE_END_ADDR handling
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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these guys are always declared next to each other; might as well put
the former (pointer to previous instance) into the latter and simplify
the calling conventions for {set,restore}_nameidata()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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now that struct filename is stashed in nameidata we have no need to
pass it in
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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fewer arguments to pass around...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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they are always called next to each other; moreover,
terminate_walk() is more symmetrical that way.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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a) make it reject ERR_PTR() for name
b) make it putname(name) on all other failure exits
c) make it return name on success
again, simplifies the callers
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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a) make it reject ERR_PTR() for name
b) make it putname(name) upon return in all other cases.
seriously simplifies the callers...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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makes for much easier life in callers
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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pass root instead; non-NULL => copy to nd.root and
set LOOKUP_ROOT in flags
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Otherwise we are risking a hard error where nonlazy restart would be the right
thing to do; it's a very narrow race with mount --move and most of the time it
ends up being completely harmless, but it's possible to construct a case when
we'll get a bogus hard error instead of falling back to non-lazy walk...
For one thing, when crossing _into_ overmount of parent we need to check for
mount_lock bumps when we get NULL from __lookup_mnt() as well.
For another, and less exotically, we need to make sure that the data fetched
in follow_up_rcu() had been consistent. ->mnt_mountpoint is pinned for as
long as it is a mountpoint, but we need to check mount_lock after fetching
to verify that.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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The guidelines for adding automount support to a filesystem
in filesystems/automount-support.txt is out or date.
filesystems/autofs4.txt contains more current text, so replace
the out-of-date content with a reference to that.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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pointless forward declarations, stale comments
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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now that we have ->root_seq, legitimize_path(&nd->root, nd->root_seq)
will do just fine...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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