Alexei Starovoitov a6ed3ea65d bpf: restore behavior of bpf_map_update_elem ... The introduction of pre-allocated hash elements inadvertently broke the behavior of bpf hash maps where users expected to call bpf_map_update_elem() without considering that the map can be full. Some programs do: old_value = bpf_map_lookup_elem(map, key); if (old_value) { ... prepare new_value on stack ... bpf_map_update_elem(map, key, new_value); } Before pre-alloc the update() for existing element would work even in 'map full' condition. Restore this behavior. The above program could have updated old_value in place instead of update() which would be faster and most programs use that approach, but sometimes the values are large and the programs use update() helper to do atomic replacement of the element. Note we cannot simply update element's value in-place like percpu hash map does and have to allocate extra num_possible_cpu elements and use this extra reserve when the map is full. Fixes: 6c90598174 ("bpf: pre-allocate hash map elements") Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-08-06 20:49:19 -04:00
..
bpf	bpf: restore behavior of bpf_map_update_elem	2016-08-06 20:49:19 -04:00
configs	config: add android config fragments	2016-08-02 19:35:42 -04:00
debug
events	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-29 13:55:30 -07:00
gcov	gcov: add support for gcc version >= 6	2016-07-15 14:54:27 +09:00
irq	genirq: Fix missing irq allocation affinity hint	2016-07-19 10:49:47 +02:00
livepatch
locking	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-25 12:41:29 -07:00
power	mm, vmscan: move LRU lists to node	2016-07-28 16:07:41 -07:00
printk	printk: add kernel parameter to control writes to /dev/kmsg	2016-08-02 19:35:06 -04:00
rcu	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-29 13:55:30 -07:00
sched	xen: features and fixes for 4.8-rc0	2016-07-27 11:35:37 -07:00
time	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-29 13:55:30 -07:00
trace	A few updates and fixes:	2016-08-03 12:50:06 -04:00
.gitignore
acct.c
async.c
audit_fsnotify.c
audit_tree.c
audit_watch.c
audit.c	Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit	2016-07-29 17:54:17 -07:00
audit.h	Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit	2016-07-29 17:54:17 -07:00
auditfilter.c	audit: add fields to exclude filter by reusing user filter	2016-06-27 11:01:00 -04:00
auditsc.c	Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit	2016-07-29 17:54:17 -07:00
backtracetest.c
bounds.c
capability.c	kernel: Add noaudit variant of ns_capable()	2016-06-06 20:16:18 +10:00
cgroup_freezer.c
cgroup_pids.c	cgroup: Use lld instead of ld when printing pids controller events_limit	2016-06-21 15:03:36 -04:00
cgroup.c	Merge branch 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2016-07-29 14:29:04 -07:00
compat.c
configs.c
context_tracking.c
cpu_pm.c
cpu.c	timers/core: Correct callback order during CPU hot plug	2016-07-28 18:56:22 +02:00
cpuset.c	cpuset, mm: fix TIF_MEMDIE check in cpuset_change_task_nodemask	2016-07-28 16:07:41 -07:00
crash_dump.c
cred.c	cred: Reject inodes with invalid ids in set_create_file_as()	2016-06-30 18:05:09 -05:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	kernel/exit.c: quieten greatest stack depth printk	2016-08-02 19:35:23 -04:00
extable.c
fork.c	mm: fix memcg stack accounting for sub-page stacks	2016-07-28 16:07:41 -07:00
freezer.c	freezer, oom: check TIF_MEMDIE on the correct task	2016-07-28 16:07:41 -07:00
futex_compat.c
futex.c	futex: Calculate the futex key based on a tail page for file-based futexes	2016-06-08 19:23:54 +02:00
groups.c
hung_task.c
irq_work.c
jump_label.c	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-25 12:41:29 -07:00
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c	kernel/kcov: unproxify debugfs file's fops	2016-06-15 04:56:35 -07:00
kexec_core.c	kexec: add restriction on kexec_load() segment sizes	2016-08-02 19:35:31 -04:00
kexec_file.c	kexec: introduce a protection mechanism for the crashkernel reserved memory	2016-05-23 17:04:14 -07:00
kexec_internal.h
kexec.c	kexec: allow architectures to override boot mapping	2016-08-02 19:35:27 -04:00
kmod.c
kprobes.c
ksysfs.c	kexec: add a kexec_crash_loaded() function	2016-08-02 19:35:30 -04:00
kthread.c
latencytop.c
Makefile	ELF/MIPS build fix	2016-05-23 17:04:14 -07:00
membarrier.c
memremap.c	libnvdimm for 4.8	2016-07-28 17:38:16 -07:00
module_signing.c
module-internal.h
module.c	dynamic_debug: only add header when used	2016-08-02 19:35:03 -04:00
notifier.c
nsproxy.c
padata.c	kernel/padata.c: hide unused functions	2016-05-19 19:12:14 -07:00
panic.c	kexec: use core_param for crash_kexec_post_notifiers boot option	2016-08-02 19:35:29 -04:00
params.c
pid_namespace.c
pid.c	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00
profile.c	profile: Convert to hotplug state machine	2016-07-15 10:41:42 +02:00
ptrace.c
range.c
reboot.c
relay.c	relay: add global mode support for buffer-only channels	2016-08-02 19:35:41 -04:00
resource.c
seccomp.c	seccomp: recheck the syscall after RET_TRACE	2016-06-14 10:54:41 -07:00
signal.c	signals: Use hrtimer for sigtimedwait()	2016-07-07 10:35:07 +02:00
smp.c	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-29 13:55:30 -07:00
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c	stop_machine: Touch_nmi_watchdog() after MULTI_STOP_PREPARE	2016-07-27 11:12:11 +02:00
sys_ni.c
sys.c	prctl: make PR_SET_THP_DISABLE wait for mmap_sem killable	2016-05-23 17:04:14 -07:00
sysctl_binary.c	kernel/sysctl_binary.c: use generic UUID library	2016-05-20 17:58:30 -07:00
sysctl.c	printk: add kernel parameter to control writes to /dev/kmsg	2016-08-02 19:35:06 -04:00
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
test_kprobes.c
torture.c	torture: Stop onoff task if there is only one cpu	2016-06-14 16:03:28 -07:00
tracepoint.c
tsacct.c
uid16.c
up.c
user_namespace.c	fs: Limit file caps to the user namespace of the super block	2016-06-24 10:40:31 -05:00
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
watchdog.c	Revert "perf/x86/intel, watchdog: Switch NMI watchdog to ref cycles on x86"	2016-07-10 20:58:36 +02:00
workqueue_internal.h
workqueue.c	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-29 13:55:30 -07:00