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d156ebf3c6f841d83d3a6fdc78825061ee0ebece
android_kernel_samsung_msm8…/kernel
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Konstantin Khlebnikov d156ebf3c6 mm: rcu-protected get_mm_exe_file() 
This patch removes mm->mmap_sem from mm->exe_file read side.
Also it kills dup_mm_exe_file() and moves exe_file duplication into
dup_mmap() where both mmap_sems are locked.

[akpm@linux-foundation.org: fix comment typo]
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[haggertk: Backport to 3.4; __fget() in fs/file.c not applicable]
Signed-off-by: Kevin F. Haggerty <haggertk@lineageos.org>
Change-Id: I7fbc5b638f9ac9e74cd9adfdfb92c81e1146080c
2021-01-03 21:26:17 +01:00
..
debug
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
events
perf/hwbp: Simplify the perf-hwbp code, fix documentation
2020-03-07 14:01:44 +01:00
gcov
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irq
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
power
power: reduce timeout for stopping processes
2019-10-18 22:26:40 +02:00
sched
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
time
alarmtimer: Prevent overflow for relative nanosleep
2019-08-09 12:03:09 +02:00
trace
UPSTREAM: ring-buffer: Prevent overflow of size in ring_buffer_resize()
2019-08-06 12:24:25 +02:00
.gitignore
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acct.c
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async.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
audit_tree.c
VFS: Make clone_mnt()/copy_tree()/collect_mounts() return errors
2019-08-06 10:44:11 +02:00
audit_watch.c
get rid of kern_path_parent()
2019-08-06 10:44:16 +02:00
audit.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
audit.h
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auditfilter.c
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auditsc.c
seccomp: remove duplicated failure logging
2019-08-05 14:22:29 +02:00
backtracetest.c
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bounds.c
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capability.c
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cgroup_freezer.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
cgroup.c
Merge remote-tracking branch 'google-common/deprecated/android-3.4' into lineage-16.0
2019-08-06 11:41:21 +02:00
compat.c
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configs.c
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cpu_pm.c
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cpu.c
CPU hotplug: Provide lockless versions of callback registration functions
2019-08-05 14:22:43 +02:00
cpuset.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
crash_dump.c
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cred.c
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delayacct.c
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dma.c
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elfcore.c
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exec_domain.c
Merge remote-tracking branch 'google-common/deprecated/android-3.4' into lineage-16.0
2019-08-06 11:41:21 +02:00
exit.c
Merge remote-tracking branch 'google-common/deprecated/android-3.4' into lineage-16.0
2019-08-06 11:41:21 +02:00
extable.c
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fork.c
mm: rcu-protected get_mm_exe_file()
2021-01-03 21:26:17 +01:00
freezer.c
Merge remote-tracking branch 'google-common/deprecated/android-3.4' into lineage-16.0
2019-08-06 11:41:21 +02:00
futex_compat.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
futex.c
futex: Remove unnecessary warning from get_futex_key
2019-08-08 16:37:20 +02:00
groups.c
misc: Import SM-G900H kernel source code
2019-08-02 15:14:10 +02:00
hrtimer.c
time: Remove CONFIG_TIMER_STATS
2019-08-06 12:26:30 +02:00
hung_task.c
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irq_work.c
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itimer.c
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jump_label.c
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kallsyms.c
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Kconfig.freezer
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Kconfig.hz
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Kconfig.locks
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Kconfig.preempt
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kexec.c
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kfifo.c
misc: Import SM-G900H kernel source code
2019-08-02 15:14:10 +02:00
kmod.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
kprobes.c
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ksysfs.c
rcu: Add a module parameter to force use of expedited RCU primitives
2014-05-05 15:49:18 -07:00
kthread.c
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latencytop.c
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lglock.c
brlocks/lglocks: turn into functions
2019-08-06 10:41:58 +02:00
lockdep_internals.h
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lockdep_proc.c
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lockdep_states.h
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lockdep.c
Merge remote-tracking branch 'google-common/deprecated/android-3.4' into lineage-16.0
2019-08-06 11:41:21 +02:00
Makefile
brlocks/lglocks: turn into functions
2019-08-06 10:41:58 +02:00
module.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
mutex-debug.c
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mutex-debug.h
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mutex.c
misc: Import SM-G900H kernel source code
2019-08-02 15:14:10 +02:00
mutex.h
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notifier.c
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nsproxy.c
userns: Allow unprivileged users to create new namespaces
2020-09-23 18:05:05 +02:00
padata.c
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panic.c
misc: Allow kernel to be compiled with SEC_DEBUG disabled
2019-08-09 09:59:25 +02:00
params.c
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pid_namespace.c
proc: Usable inode numbers for the namespace file descriptors.
2015-09-11 14:44:24 +05:30
pid.c
misc: Import SM-G900H kernel source code
2019-08-02 15:14:10 +02:00
posix-cpu-timers.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
posix-timers.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
printk.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
profile.c
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ptrace.c
__ptrace_may_access() should not deny sub-threads
2019-08-06 08:48:40 +02:00
range.c
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rcu.h
rcu: Add a module parameter to force use of expedited RCU primitives
2014-05-05 15:49:18 -07:00
rcupdate.c
rcu: Make exit_rcu() more precise and consolidate
2014-07-21 21:31:55 +05:30
rcutiny_plugin.h
rcu: Make exit_rcu() more precise and consolidate
2014-07-21 21:31:55 +05:30
rcutiny.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
rcutorture.c
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rcutree_plugin.h
Revert "rcu: Move PREEMPT_RCU preemption to switch_to() invocation"
2014-07-21 21:46:54 +05:30
rcutree_trace.c
rcu: Make rcu_barrier() less disruptive
2014-07-21 21:37:29 +05:30
rcutree.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
rcutree.h
Revert "rcu: Move PREEMPT_RCU preemption to switch_to() invocation"
2014-07-21 21:46:54 +05:30
relay.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
res_counter.c
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resource.c
/proc/iomem: only expose physical resource addresses to privileged users
2019-08-09 11:48:51 +02:00
rtmutex_common.h
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rtmutex-debug.c
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rtmutex-debug.h
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
rtmutex-tester.c
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rtmutex.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
rtmutex.h
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
rwsem.c
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seccomp.c
seccomp: Replace BUG(!spin_is_locked()) with assert_spin_lock
2019-08-05 14:22:42 +02:00
semaphore.c
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signal.c
Merge remote-tracking branch 'google-common/deprecated/android-3.4' into lineage-16.0
2019-08-06 11:41:21 +02:00
smp.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
softirq.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
spinlock.c
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srcu.c
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stacktrace.c
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stop_machine.c
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sys_ni.c
shm: add memfd_create() syscall
2020-09-23 17:38:52 +02:00
sys.c
userns: Add kuid_t and kgid_t and associated infrastructure in uidgid.h
2019-08-08 15:08:48 +02:00
sysctl_binary.c
kernel/sysctl_binary.c: check name array length in deprecated_sysctl_warning()
2019-08-08 12:09:29 +02:00
sysctl.c
kernel/sysctl.c: add missing range check in do_proc_dointvec_minmax_conv
2020-05-20 09:43:44 +02:00
taskstats.c
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test_kprobes.c
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time.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
timeconst.bc
kernel: Replace timeconst.pl with a bc script
2019-08-05 09:09:45 +02:00
timeconst.pl
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
timer.c
time: Remove CONFIG_TIMER_STATS
2019-08-06 12:26:30 +02:00
tracepoint.c
Merge tag 'v3.4.113' into lineage-16.0
2019-08-05 14:20:47 +02:00
tsacct.c
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uid16.c
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up.c
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user_namespace.c
proc: fix build broken by proc inode per namespace patch
2019-08-05 09:13:23 +02:00
user-return-notifier.c
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user.c
proc: Usable inode numbers for the namespace file descriptors.
2015-09-11 14:44:24 +05:30
utsname_sysctl.c
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utsname.c
userns: Allow unprivileged use of setns.
2020-09-23 18:05:05 +02:00
wait.c
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watchdog.c
Merge remote-tracking branch 'google-common/deprecated/android-3.4' into lineage-16.0
2019-08-06 11:41:21 +02:00
workqueue_sched.h
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workqueue.c
time: Remove CONFIG_TIMER_STATS
2019-08-06 12:26:30 +02:00