Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Pavel Emelyanov 893e26e61d userfaultfd: non-cooperative: Add fork() event ... When the mm with uffd-ed vmas fork()-s the respective vmas notify their uffds with the event which contains a descriptor with new uffd. This new descriptor can then be used to get events from the child and populate its mm with data. Note, that there can be different uffd-s controlling different vmas within one mm, so first we should collect all those uffds (and ctx-s) in a list and then notify them all one by one but only once per fork(). The context is created at fork() time but the descriptor, file struct and anon inode object is created at event read time. So some trickery is added to the userfaultfd_ctx_read() to handle the ctx queues' locking vs file creation. Another thing worth noticing is that the task that fork()-s waits for the uffd event to get processed WITHOUT the mmap sem. [aarcange@redhat.com: build warning fix] Link: http://lkml.kernel.org/r/20161216144821.5183-10-aarcange@redhat.com Link: http://lkml.kernel.org/r/20161216144821.5183-9-aarcange@redhat.com Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Michael Rapoport <RAPOPORT@il.ibm.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2017-02-22 16:41:28 -08:00
..
bpf	bpf: make jited programs visible in traces	2017-02-17 13:40:05 -05:00
configs	arch: Rename CONFIG_DEBUG_RODATA and CONFIG_DEBUG_MODULE_RONX	2017-02-07 12:32:52 -08:00
debug	kdb: call vkdb_printf() from vprintk_default() only when wanted	2016-12-14 16:04:08 -08:00
events	Linux 4.10-rc8	2017-02-14 07:29:14 +01:00
gcov
irq	IOMMU Updates for Linux v4.11	2017-02-20 16:42:43 -08:00
livepatch	livepatch/module: make TAINT_LIVEPATCH module-specific	2016-08-26 14:42:08 +02:00
locking	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-02-20 13:23:30 -08:00
power	This renames the (now inaccurate) CONFIG_DEBUG_RODATA and related config	2017-02-21 17:56:45 -08:00
printk	printk: use rcuidle console tracepoint	2017-02-18 17:27:00 -08:00
rcu	Merge branches 'doc.2017.01.15b', 'dyntick.2017.01.23a', 'fixes.2017.01.23a', 'srcu.2017.01.25a' and 'torture.2017.01.15b' into HEAD	2017-01-25 12:56:05 -08:00
sched	sched/core: Fix build paravirt build on arm and arm64	2017-02-21 10:54:02 -08:00
time	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-02-20 12:52:55 -08:00
trace	tracing: add __print_flags_u64()	2017-02-22 16:41:26 -08:00
.gitignore
acct.c	acct: Convert obsolete cputime type to nsecs	2017-02-01 09:13:51 +01:00
async.c
audit.c	Merge branch 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit	2017-02-21 13:25:50 -08:00
audit.h	Merge branch 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit	2017-02-21 13:25:50 -08:00
audit_fsnotify.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-12-17 18:44:00 -08:00
audit_tree.c	Merge branch 'stable-4.10' of git://git.infradead.org/users/pcmoore/audit	2017-01-05 23:06:06 -08:00
audit_watch.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-12-17 18:44:00 -08:00
auditfilter.c	audit: add support for session ID user filter	2016-11-29 15:10:12 -05:00
auditsc.c	Merge branch 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit	2017-02-21 13:25:50 -08:00
backtracetest.c
bounds.c
capability.c	capability: export has_capability	2017-01-12 07:01:56 -07:00
cgroup.c	bpf: introduce BPF_F_ALLOW_OVERRIDE flag	2017-02-12 21:52:19 -05:00
cgroup_freezer.c
cgroup_pids.c
compat.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
configs.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
context_tracking.c
cpu.c	cpu/hotplug: Remove unused but set variable in _cpu_down()	2017-01-18 11:55:09 +01:00
cpu_pm.c
cpuset.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
crash_dump.c
cred.c
delayacct.c	delaycct: Convert obsolete cputime type to nsecs	2017-02-01 09:13:52 +01:00
dma.c
elfcore.c
exec_domain.c
exit.c	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2017-02-21 12:49:56 -08:00
extable.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-02-22 10:15:09 -08:00
fork.c	userfaultfd: non-cooperative: Add fork() event	2017-02-22 16:41:28 -08:00
freezer.c	freezer, oom: check TIF_MEMDIE on the correct task	2016-07-28 16:07:41 -07:00
futex.c	futex: Move futex_init() to core_initcall	2017-02-13 16:12:22 +01:00
futex_compat.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
groups.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
hung_task.c	hung_task: decrement sysctl_hung_task_warnings only if it is positive	2016-12-12 18:55:09 -08:00
irq_work.c
jump_label.c	jump_labels: API for flushing deferred jump label updates	2017-01-12 14:33:16 +01:00
kallsyms.c	bpf: make jited programs visible in traces	2017-02-17 13:40:05 -05:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks	locking/mutex: Allow MUTEX_SPIN_ON_OWNER when DEBUG_MUTEXES	2016-10-25 11:31:51 +02:00
Kconfig.preempt
kcov.c	kcov: make kcov work properly with KASLR enabled	2016-12-20 09:48:47 -08:00
kexec.c	kexec: allow architectures to override boot mapping	2016-08-02 19:35:27 -04:00
kexec_core.c	kexec: Switch to __pa_symbol	2017-01-11 13:56:49 +00:00
kexec_file.c	ima: on soft reboot, save the measurement list	2016-12-20 09:48:44 -08:00
kexec_internal.h	kexec_file: Allow arch-specific memory walking for kexec_add_buffer	2016-11-30 23:14:57 +11:00
kmod.c	Introduce STATIC_USERMODEHELPER to mediate call_usermodehelper()	2017-01-19 12:59:45 +01:00
kprobes.c	powerpc updates for 4.11 part 1.	2017-02-22 10:30:38 -08:00
ksysfs.c	kexec: add a kexec_crash_loaded() function	2016-08-02 19:35:30 -04:00
kthread.c	time: Remove CONFIG_TIMER_STATS	2017-02-10 11:15:08 +01:00
latencytop.c
Makefile	Merge branch 'akpm' (patches from Andrew)	2016-12-14 17:25:18 -08:00
membarrier.c	Fix: Disable sys_membarrier when nohz_full is enabled	2017-01-23 11:32:16 -08:00
memremap.c	mm: fix devm_memremap_pages crash, use mem_hotplug_{begin, done}	2017-01-10 18:31:54 -08:00
module-internal.h
module.c	This renames the (now inaccurate) CONFIG_DEBUG_RODATA and related config	2017-02-21 17:56:45 -08:00
module_signing.c
notifier.c
nsproxy.c
padata.c	padata: Remove unused but set variables	2016-10-25 11:08:10 +08:00
panic.c	kernel/panic.c: add missing \n	2017-01-24 16:26:14 -08:00
params.c
pid.c	locking/atomic, kref: Add KREF_INIT()	2017-01-14 11:37:18 +01:00
pid_namespace.c	pid: fix lockdep deadlock warning due to ucount_lock	2017-01-10 13:34:56 +13:00
profile.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
ptrace.c	ptrace: Don't allow accessing an undumpable mm	2016-11-22 12:57:38 -06:00
range.c
reboot.c
relay.c	relay: check array offset before using it	2016-12-14 16:04:08 -08:00
resource.c
seccomp.c	seccomp: dump core when using SECCOMP_RET_KILL	2017-01-23 21:42:42 +11:00
signal.c	signal: Convert obsolete cputime type to nsecs	2017-02-01 09:13:53 +01:00
smp.c	kernel/smp: Tell the user we're bringing up secondary CPUs	2016-10-26 12:02:35 +02:00
smpboot.c	kthread/smpboot: do not park in kthread_create_on_cpu()	2016-10-11 15:06:33 -07:00
smpboot.h
softirq.c	softirq: Display IRQ_POLL for irq-poll statistics	2016-10-21 15:45:47 -06:00
stacktrace.c	stacktrace, lockdep: Fix address, newline ugliness	2017-02-08 08:21:31 +01:00
stop_machine.c	locking/core, stop_machine: Yield the CPU during stop machine()	2016-11-16 10:15:09 +01:00
sys.c	sched/cputime: Convert task/group cputime to nsecs	2017-02-01 09:13:49 +01:00
sys_ni.c	move aio compat to fs/aio.c	2016-12-22 22:58:37 -05:00
sysctl.c	sched/rt: Show the 'sched_rr_timeslice' SCHED_RR timeslice tuning knob in milliseconds	2017-02-01 11:01:30 +01:00
sysctl_binary.c	sysctl: add KERN_CONT to deprecated_sysctl_warning()	2016-12-14 16:04:07 -08:00
task_work.c	task_work: use READ_ONCE/lockless_dereference, avoid pi_lock if !task_works	2016-08-02 19:35:02 -04:00
taskstats.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-11-15 10:54:36 -05:00
test_kprobes.c
torture.c	torture: Convert torture_shutdown() to hrtimer	2016-08-22 10:01:49 -07:00
tracepoint.c	tracing: Have the reg function allow to fail	2016-12-09 09:13:30 -05:00
tsacct.c	tsacct: Convert obsolete cputime type to nsecs	2017-02-01 09:13:52 +01:00
ucount.c	kernel/ucount.c: mark user_header with kmemleak_ignore()	2017-02-08 15:41:43 -08:00
uid16.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
up.c	smp: Add function to execute a function synchronously on a CPU	2016-09-05 13:52:39 +02:00
user-return-notifier.c
user.c
user_namespace.c	Merge branch 'nsfs-ioctls' into HEAD	2016-09-22 20:00:36 -05:00
utsname.c	Merge branch 'nsfs-ioctls' into HEAD	2016-09-22 20:00:36 -05:00
utsname_sysctl.c
watchdog.c	kernel/watchdog: prevent false hardlockup on overloaded system	2017-01-24 16:26:14 -08:00
watchdog_hld.c	kernel/watchdog.c: do not hardcode CPU 0 as the initial thread	2017-02-22 16:41:27 -08:00
workqueue.c	time: Remove CONFIG_TIMER_STATS	2017-02-10 11:15:08 +01:00
workqueue_internal.h