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Christoph Hellwig 5cf9c91ba9 block: serialize all debugfs operations using q->debugfs_mutex 
Various places like I/O schedulers or the QOS infrastructure try to
register debugfs files on demans, which can race with creating and
removing the main queue debugfs directory.  Use the existing
debugfs_mutex to serialize all debugfs operations that rely on
q->debugfs_dir or the directories hanging off it.

To make the teardown code a little simpler declare all debugfs dentry
pointers and not just the main one uncoditionally in blkdev.h.

Move debugfs_mutex next to the dentries that it protects and document
what it is used for.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220614074827.458955-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-06-17 07:31:05 -06:00
..
bpf
bpf: Fix calling global functions from BPF_PROG_TYPE_EXT programs
2022-06-07 10:41:20 -07:00
cgroup
Merge branch 'for-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2022-05-25 11:47:25 -07:00
configs
x86/configs: Add x86 debugging Kconfig fragment plus docs
2022-04-06 19:56:29 +02:00
debug
Modules updates for v5.19-rc1
2022-05-26 17:13:43 -07:00
dma
swiotlb: fix setting ->force_bounce
2022-06-02 07:17:59 +02:00
entry
* Fix syzkaller NULL pointer dereference
2022-06-08 09:16:31 -07:00
events
Two small perf updates:
2022-06-05 10:40:31 -07:00
futex
drm for 5.19-rc1
2022-05-25 16:18:27 -07:00
gcov
gcov: Remove compiler version check
2021-12-02 17:25:21 +09:00
irq
Updates for interrupt core and drivers:
2022-05-23 16:58:49 -07:00
kcsan
linux-kselftest-kunit-5.19-rc1
2022-05-25 11:32:53 -07:00
livepatch
Livepatching changes for 5.19
2022-06-02 08:55:01 -07:00
locking
sysctl changes for v5.19-rc1
2022-05-26 16:57:20 -07:00
module
module: Fix prefix for module.sig_enforce module param
2022-06-02 12:44:33 -07:00
power
cxl for 5.19
2022-05-27 21:24:19 -07:00
printk
Revert "printk: wake up all waiters"
2022-05-27 13:04:46 +02:00
rcu
sysctl changes for v5.19-rc1
2022-05-26 16:57:20 -07:00
sched
Fix the fallout of sysctl code move which placed the init function wrong.
2022-06-05 10:42:40 -07:00
time
While looking at the ptrace problems with PREEMPT_RT and the problems
2022-06-03 16:13:25 -07:00
trace
block: serialize all debugfs operations using q->debugfs_mutex
2022-06-17 07:31:05 -06:00
.gitignore
…
acct.c
kernel/acct: move acct sysctls to its own file
2022-04-06 13:43:44 -07:00
async.c
Revert "module, async: async_synchronize_full() on module init iff async is used"
2022-02-03 11:20:34 -08:00
audit_fsnotify.c
fsnotify: make allow_dups a property of the group
2022-04-25 14:37:18 +02:00
audit_tree.c
audit: use fsnotify group lock helpers
2022-04-25 14:37:28 +02:00
audit_watch.c
fsnotify: pass flags argument to fsnotify_alloc_group()
2022-04-25 14:37:12 +02:00
audit.c
audit: improve audit queue handling when "audit=1" on cmdline
2022-01-25 13:22:51 -05:00
audit.h
audit: log AUDIT_TIME_* records only from rules
2022-02-22 13:51:40 -05:00
auditfilter.c
audit/stable-5.17 PR 20220110
2022-01-11 13:08:21 -08:00
auditsc.c
audit,io_uring,io-wq: call __audit_uring_exit for dummy contexts
2022-05-17 15:03:36 -04:00
backtracetest.c
…
bounds.c
…
capability.c
xfs: don't generate selinux audit messages for capability testing
2022-03-09 10:32:06 -08:00
cfi.c
…
compat.c
…
configs.c
…
context_tracking.c
…
cpu_pm.c
…
cpu.c
Intel Trust Domain Extensions
2022-05-23 17:51:12 -07:00
crash_core.c
Not a lot of material this cycle. Many singleton patches against various
2022-05-27 11:22:03 -07:00
crash_dump.c
…
cred.c
x86: Mark __invalid_creds() __noreturn
2022-03-15 10:32:44 +01:00
delayacct.c
delayacct: track delays from write-protect copy
2022-06-01 15:55:25 -07:00
dma.c
…
exec_domain.c
…
exit.c
ptrace: Cleanups for v5.18
2022-03-28 17:29:53 -07:00
extable.c
lkdtm: Really write into kernel text in WRITE_KERN
2022-02-16 23:25:12 +11:00
fail_function.c
…
fork.c
This set of changes updates init and user mode helper tasks to be
2022-06-03 16:03:05 -07:00
freezer.c
…
gen_kheaders.sh
kheaders: Have cpio unconditionally replace files
2022-05-08 03:16:59 +09:00
groups.c
…
hung_task.c
Not a lot of material this cycle. Many singleton patches against various
2022-05-27 11:22:03 -07:00
iomem.c
…
irq_work.c
irq_work: use kasan_record_aux_stack_noalloc() record callstack
2022-04-15 14:49:55 -07:00
jump_label.c
…
kallsyms.c
ftrace: Add ftrace_lookup_symbols function
2022-05-10 14:42:06 -07:00
kcmp.c
…
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
…
Kconfig.preempt
Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels"
2022-03-31 10:36:55 +02:00
kcov.c
kcov: update pos before writing pc in trace function
2022-05-25 13:05:42 -07:00
kexec_core.c
Not a lot of material this cycle. Many singleton patches against various
2022-05-27 11:22:03 -07:00
kexec_elf.c
…
kexec_file.c
RISC-V Patches for the 5.19 Merge Window, Part 1
2022-05-31 14:10:54 -07:00
kexec_internal.h
…
kexec.c
…
kheaders.c
…
kmod.c
…
kprobes.c
tracing updates for 5.19:
2022-05-29 10:31:36 -07:00
ksysfs.c
kernel/ksysfs.c: use helper macro __ATTR_RW
2022-03-23 19:00:33 -07:00
kthread.c
kthread: unexport kthread_blkcg
2022-05-02 14:06:20 -06:00
latencytop.c
latencytop: move sysctl to its own file
2022-04-21 11:40:59 -07:00
Makefile
kernel: add platform_has() infrastructure
2022-06-06 08:06:00 +02:00
module_signature.c
…
notifier.c
notifier: Add blocking/atomic_notifier_chain_register_unique_prio()
2022-05-19 19:30:30 +02:00
nsproxy.c
…
padata.c
padata: replace cpumask_weight with cpumask_empty in padata.c
2022-01-31 11:21:46 +11:00
panic.c
sysctl changes for v5.19-rc1
2022-05-26 16:57:20 -07:00
params.c
kobject: remove kset from struct kset_uevent_ops callbacks
2021-12-28 11:26:18 +01:00
pid_namespace.c
kernel: pid_namespace: use NULL instead of using plain integer as pointer
2022-04-29 14:38:00 -07:00
pid.c
…
platform-feature.c
kernel: add platform_has() infrastructure
2022-06-06 08:06:00 +02:00
profile.c
exit: Remove profile_handoff_task
2022-01-08 12:43:57 -06:00
ptrace.c
While looking at the ptrace problems with PREEMPT_RT and the problems
2022-06-03 16:13:25 -07:00
range.c
…
reboot.c
kernel/reboot: Fix powering off using a non-syscall code paths
2022-06-07 19:42:31 +02:00
regset.c
…
relay.c
relay: remove redundant assignment to pointer buf
2022-05-12 20:38:37 -07:00
resource_kunit.c
…
resource.c
kernel/resource: fix kfree() of bootmem memory again
2022-03-23 19:00:35 -07:00
rseq.c
rseq: Remove broken uapi field layout on 32-bit little endian
2022-02-02 13:11:34 +01:00
scftorture.c
scftorture: Fix distribution of short handler delays
2022-04-11 17:07:29 -07:00
scs.c
kasan, vmalloc: only tag normal vmalloc allocations
2022-03-24 19:06:48 -07:00
seccomp.c
seccomp: Add wait_killable semantic to seccomp user notifier
2022-05-03 14:11:58 -07:00
signal.c
While looking at the ptrace problems with PREEMPT_RT and the problems
2022-06-03 16:13:25 -07:00
smp.c
Scheduler changes in this cycle were:
2022-05-24 11:11:13 -07:00
smpboot.c
cpu/hotplug: Allow the CPU in CPU_UP_PREPARE state to be brought up again.
2022-04-12 14:13:01 +02:00
smpboot.h
…
softirq.c
smp: Make softirq handling RT safe in flush_smp_call_function_queue()
2022-05-01 10:03:43 +02:00
stackleak.c
stackleak: add on/off stack variants
2022-05-08 01:33:09 -07:00
stacktrace.c
uaccess: remove CONFIG_SET_FS
2022-02-25 09:36:06 +01:00
static_call_inline.c
static_call: Don't make __static_call_return0 static
2022-04-05 09:59:38 +02:00
static_call.c
static_call: Don't make __static_call_return0 static
2022-04-05 09:59:38 +02:00
stop_machine.c
Scheduler changes in this cycle were:
2022-05-24 11:11:13 -07:00
sys_ni.c
mm/mempolicy: wire up syscall set_mempolicy_home_node
2022-01-15 16:30:30 +02:00
sys.c
arm64/sme: Implement vector length configuration prctl()s
2022-04-22 18:50:54 +01:00
sysctl-test.c
…
sysctl.c
sysctl changes for v5.19-rc1
2022-05-26 16:57:20 -07:00
task_work.c
task_work: allow TWA_SIGNAL without a rescheduling IPI
2022-04-30 08:39:32 -06:00
taskstats.c
kernel: make taskstats available from all net namespaces
2022-04-29 14:38:03 -07:00
torture.c
torture: Wake up kthreads after storing task_struct pointer
2022-02-01 17:24:39 -08:00
tracepoint.c
…
tsacct.c
taskstats: version 12 with thread group and exe info
2022-04-29 14:38:03 -07:00
ucount.c
ucounts: Handle wrapping in is_ucounts_overlimit
2022-02-17 09:11:57 -06:00
uid16.c
…
uid16.h
…
umh.c
kthread: Don't allocate kthread_struct for init and umh
2022-05-06 14:49:44 -05:00
up.c
…
user_namespace.c
ucounts: Fix systemd LimitNPROC with private users regression
2022-02-25 10:40:14 -06:00
user-return-notifier.c
…
user.c
…
usermode_driver.c
blob_to_mnt(): kern_unmount() is needed to undo kern_mount()
2022-05-19 23:25:47 -04:00
utsname_sysctl.c
…
utsname.c
…
watch_queue.c
watch_queue: Free the page array when watch_queue is dismantled
2022-04-02 10:37:39 -07:00
watchdog_hld.c
printk: add functions to prefer direct printing
2022-04-22 21:30:58 +02:00
watchdog.c
Not a lot of material this cycle. Many singleton patches against various
2022-05-27 11:22:03 -07:00
workqueue_internal.h
…
workqueue.c
workqueue: Wrap flush_workqueue() using a macro
2022-06-07 07:07:14 -10:00