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linux/kernel
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Jason Gunthorpe c8a53b2db0 mm/hmm: Hold a mmgrab from hmm to mm 
So long as a struct hmm pointer exists, so should the struct mm it is
linked too. Hold the mmgrab() as soon as a hmm is created, and mmdrop() it
once the hmm refcount goes to zero.

Since mmdrop() (ie a 0 kref on struct mm) is now impossible with a !NULL
mm->hmm delete the hmm_hmm_destroy().

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Philip Yang <Philip.Yang@amd.com>
2019-06-10 10:10:33 -03:00
..
bpf
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206
2019-05-30 11:29:53 -07:00
cgroup
mm, memcg: consider subtrees in memory.events
2019-06-01 15:51:31 -07:00
configs
kvm_config: add CONFIG_VIRTIO_MENU
2018-10-24 20:55:56 -04:00
debug
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
dma
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
events
perf/ring-buffer: Use regular variables for nesting
2019-05-24 09:00:11 +02:00
gcov
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
irq
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
livepatch
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
2019-05-21 11:28:45 +02:00
locking
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
power
ACPI: PM: Call pm_set_suspend_via_firmware() during hibernation
2019-05-27 10:51:45 +02:00
printk
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
2019-05-21 11:28:45 +02:00
rcu
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
sched
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
time
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
trace
This fixes a memory leak from the error path in the event filter logic.
2019-05-29 11:26:40 -07:00
.gitignore
Provide in-kernel headers to make extending kernel easier
2019-04-29 16:48:03 +02:00
acct.c
acct_on(): don't mess with freeze protection
2019-04-04 21:04:13 -04:00
async.c
treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively
2019-04-09 14:19:06 +02:00
audit_fsnotify.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
audit_tree.c
fsnotify: switch send_to_group() and ->handle_event to const struct qstr *
2019-04-26 13:51:03 -04:00
audit_watch.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
audit.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
audit.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
auditfilter.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
auditsc.c
Merge branch 'work.dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-05-07 20:03:32 -07:00
backtracetest.c
backtrace-test: Simplify stack trace handling
2019-04-29 12:37:47 +02:00
bounds.c
kbuild: fix kernel/bounds.c 'W=1' warning
2018-10-31 08:54:14 -07:00
capability.c
LSM: add SafeSetID module that gates setid calls
2019-01-25 11:22:43 -08:00
compat.c
kernel/compat.c: mark expected switch fall-throughs
2019-05-15 08:16:14 -07:00
configs.c
kernel/configs: use .incbin directive to embed config_data.gz
2019-03-07 18:32:02 -08:00
context_tracking.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
cpu_pm.c
…
cpu.c
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-06 14:50:46 -07:00
crash_core.c
kexec: export PG_offline to VMCOREINFO
2019-03-05 21:07:14 -08:00
crash_dump.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
cred.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
delayacct.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 25
2019-05-21 11:52:39 +02:00
dma.c
proc: introduce proc_create_single{,_data}
2018-05-16 07:23:35 +02:00
elfcore.c
…
exec_domain.c
proc: introduce proc_create_single{,_data}
2018-05-16 07:23:35 +02:00
exit.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
extable.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
fail_function.c
treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively
2019-04-09 14:19:06 +02:00
fork.c
mm/hmm: Hold a mmgrab from hmm to mm
2019-06-10 10:10:33 -03:00
freezer.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
futex.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
gen_ikh_data.sh
Provide in-kernel headers to make extending kernel easier
2019-04-29 16:48:03 +02:00
groups.c
kernel: make groups_sort calling a responsibility group_info allocators
2017-12-14 16:00:49 -08:00
hung_task.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
iomem.c
mm/resource: Use resource_overlaps() to simplify region_intersects()
2019-04-19 12:59:36 +02:00
irq_work.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
jump_label.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
kallsyms.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
kcmp.c
…
Kconfig.freezer
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
Kconfig.hz
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
Kconfig.locks
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
Kconfig.preempt
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
kcov.c
kcov: convert kcov.refcount to refcount_t
2019-03-07 18:32:02 -08:00
kexec_core.c
power/suspend: Add function to disable secondaries for suspend
2019-05-03 19:42:41 +02:00
kexec_file.c
mm: memblock: make keeping memblock memory opt-in rather than opt-out
2019-05-14 09:47:50 -07:00
kexec_internal.h
…
kexec.c
kexec: add call to LSM hook in original kexec_load syscall
2018-07-16 12:31:57 -07:00
kheaders.c
Provide in-kernel headers to make extending kernel easier
2019-04-29 16:48:03 +02:00
kmod.c
…
kprobes.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
ksysfs.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 170
2019-05-30 11:26:39 -07:00
kthread.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
latencytop.c
kernel/latencytop.c: rename clear_all_latency_tracing to clear_tsk_latency_tracing
2019-05-14 19:52:49 -07:00
Makefile
kernel/Makefile: don't assume that kernel/gen_ikh_data.sh is executable
2019-05-14 19:52:47 -07:00
memremap.c
kernel/memremap.c: remove the unused device_private_entry_fault() export
2019-05-14 09:47:51 -07:00
module_signing.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
module-internal.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
module.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
notifier.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
nsproxy.c
…
padata.c
padata: Replace padata_attr_type default_attrs field with groups
2019-04-25 22:06:11 +02:00
panic.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
params.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
pid_namespace.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
pid.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
profile.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
ptrace.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
range.c
…
reboot.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
relay.c
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-03-12 13:27:20 -07:00
resource.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
rseq.c
rseq: Remove superfluous rseq_len from task_struct
2019-04-19 12:39:32 +02:00
seccomp.c
audit/stable-5.2 PR 20190507
2019-05-07 19:06:04 -07:00
signal.c
kernel/signal.c: trace_signal_deliver when signal_group_exit
2019-06-01 15:51:32 -07:00
smp.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
smpboot.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
smpboot.h
…
softirq.c
softirq: Remove tasklet_hrtimer
2019-03-22 14:36:02 +01:00
stackleak.c
stackleak: Mark stackleak_track_stack() as notrace
2018-12-05 19:31:44 -08:00
stacktrace.c
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-06-02 11:04:42 -07:00
stop_machine.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 38
2019-05-24 17:27:11 +02:00
sys_ni.c
signal: support CLONE_PIDFD with pidfd_send_signal
2019-05-07 14:31:03 +02:00
sys.c
prctl_set_mm: downgrade mmap_sem to read lock
2019-06-01 15:51:31 -07:00
sysctl_binary.c
kernel/sysctl: add panic_print into sysctl
2019-01-04 13:13:47 -08:00
sysctl.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
task_work.c
locking/barriers: Convert users of lockless_dereference() to READ_ONCE()
2017-12-17 13:57:15 +01:00
taskstats.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
test_kprobes.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 25
2019-05-21 11:52:39 +02:00
torture.c
torture: Don't try to offline the last CPU
2019-03-26 14:42:53 -07:00
tracepoint.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
tsacct.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
ucount.c
headers: untangle kmemleak.h from mm.h
2018-04-05 21:36:27 -07:00
uid16.c
fs: add do_fchownat(), ksys_fchown() helpers and ksys_{,l}chown() wrappers
2018-04-02 20:15:59 +02:00
uid16.h
kernel: provide ksys_*() wrappers for syscalls called by kernel/uid16.c
2018-04-02 20:15:30 +02:00
umh.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
up.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
user_namespace.c
userns: also map extents in the reverse map to kernel IDs
2018-11-07 23:51:16 -06:00
user-return-notifier.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
user.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
utsname_sysctl.c
sys: don't hold uts_sem while accessing userspace memory
2018-08-11 02:05:53 -05:00
utsname.c
uts: create "struct uts_namespace" from kmem_cache
2018-04-11 10:28:35 -07:00
watchdog_hld.c
kernel/watchdog_hld.c: hard lockup message should end with a newline
2019-04-19 09:46:05 -07:00
watchdog.c
watchdog: Fix typo in comment
2019-04-18 14:05:51 +02:00
workqueue_internal.h
sched/core, workqueues: Distangle worker accounting from rq lock
2019-04-16 16:55:15 +02:00
workqueue.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00