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34d5a4b336
prevent inodes from vanishing, but ihold() does not guarantee inode persistence. Replace the inode pointer with a per boot, machine wide, unique inode identifier. The second commit fixes the breakage of the hash mechanism whihc causes a 100% performance regression. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl5uQJsTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoYp4EAC5fr/AyRaIn/AEIZUmoyK6ELUaknfH Z788avxDB/t5GkzC9A2dMpybYi78tzLSAEfB8jYgwbrqExapVtiqvjGZ1RIi3HoN f/DWLnOb2s+yYQ3BQlHu4RdKONEzCqBwKFpElGRv3JzCY8Qeh5cQBzdqzvOEFmYw P7DJVtJRZ2dud7AzJ+xk6KuNIKCT2F7Djmtop6nq1EVw0J/2oYOVgQu76APBj7cj 32srLmpP4xcQiJmWLC5ksXKiZrMPnyNfwXhHFufNvJ2Re6+Wf8mmglqG/5DmA+Ns Sq3L7D7yXwtWQZ8Po1qnWhPDZVXQbWzHyTn4YAMJAK7yoO7mut8jgECt+A8vf4L+ hsc41c6THfdCQQ9gmxLL+c08nZGlmvIC4/1RsihNZ3kd2o4k6Ah9xFp8lBFcpjWd 7tuhakNqJvUOvB34t2AYqzMFbZ/FJG+QNGyIW0bTUn4YIgRPxI/zsdMxqGVBZ4oN 0iuy1kPLGbGAnLU9thkiVMmAyaPesuiB6f+mmzobEUgGI35GrCJi6a4YaTG1sqFn Gl8oPzcU2n+DWbVBfJrVFHJye7oi78kCw6wpNLBCJQp8NP8doAH0Sgspglg52E/p G4GGLz0vGauHBC5wQ3WYiGLImWbzC1dwKdcNE7dhuTgXbhz8ChVlOSU9Fu4+pGpq 6URL6DVTLwDZPg== =e2iB -----END PGP SIGNATURE----- Merge tag 'locking-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull futex fix from Thomas Gleixner: "Fix for yet another subtle futex issue. The futex code used ihold() to prevent inodes from vanishing, but ihold() does not guarantee inode persistence. Replace the inode pointer with a per boot, machine wide, unique inode identifier. The second commit fixes the breakage of the hash mechanism which causes a 100% performance regression" * tag 'locking-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: futex: Unbreak futex hashing futex: Fix inode life-time issue |
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.. | ||
bpf | ||
cgroup | ||
configs | ||
debug | ||
dma | ||
events | ||
gcov | ||
irq | ||
livepatch | ||
locking | ||
power | ||
printk | ||
rcu | ||
sched | ||
time | ||
trace | ||
.gitignore | ||
acct.c | ||
async.c | ||
audit_fsnotify.c | ||
audit_tree.c | ||
audit_watch.c | ||
audit.c | ||
audit.h | ||
auditfilter.c | ||
auditsc.c | ||
backtracetest.c | ||
bounds.c | ||
capability.c | ||
compat.c | ||
configs.c | ||
context_tracking.c | ||
cpu_pm.c | ||
cpu.c | ||
crash_core.c | ||
crash_dump.c | ||
cred.c | ||
delayacct.c | ||
dma.c | ||
elfcore.c | ||
exec_domain.c | ||
exit.c | ||
extable.c | ||
fail_function.c | ||
fork.c | ||
freezer.c | ||
futex.c | ||
gen_kheaders.sh | ||
groups.c | ||
hung_task.c | ||
iomem.c | ||
irq_work.c | ||
jump_label.c | ||
kallsyms.c | ||
kcmp.c | ||
Kconfig.freezer | ||
Kconfig.hz | ||
Kconfig.locks | ||
Kconfig.preempt | ||
kcov.c | ||
kexec_core.c | ||
kexec_elf.c | ||
kexec_file.c | ||
kexec_internal.h | ||
kexec.c | ||
kheaders.c | ||
kmod.c | ||
kprobes.c | ||
ksysfs.c | ||
kthread.c | ||
latencytop.c | ||
Makefile | ||
module_signature.c | ||
module_signing.c | ||
module-internal.h | ||
module.c | ||
notifier.c | ||
nsproxy.c | ||
padata.c | ||
panic.c | ||
params.c | ||
pid_namespace.c | ||
pid.c | ||
profile.c | ||
ptrace.c | ||
range.c | ||
reboot.c | ||
relay.c | ||
resource.c | ||
rseq.c | ||
seccomp.c | ||
signal.c | ||
smp.c | ||
smpboot.c | ||
smpboot.h | ||
softirq.c | ||
stackleak.c | ||
stacktrace.c | ||
stop_machine.c | ||
sys_ni.c | ||
sys.c | ||
sysctl_binary.c | ||
sysctl-test.c | ||
sysctl.c | ||
task_work.c | ||
taskstats.c | ||
test_kprobes.c | ||
torture.c | ||
tracepoint.c | ||
tsacct.c | ||
ucount.c | ||
uid16.c | ||
uid16.h | ||
umh.c | ||
up.c | ||
user_namespace.c | ||
user-return-notifier.c | ||
user.c | ||
utsname_sysctl.c | ||
utsname.c | ||
watchdog_hld.c | ||
watchdog.c | ||
workqueue_internal.h | ||
workqueue.c |