tmp_suning_uos_patched/kernel
Linus Torvalds 3af968e066 async: Fix lack of boot-time console due to insufficient synchronization
Our async work synchronization was broken by "async: make sure
independent async domains can't accidentally entangle" (commit
d5a877e8dd), because it would report
the wrong lowest active async ID when there was both running and
pending async work.

This caused things like no being able to read the root filesystem,
resulting in missing console devices and inability to run 'init',
causing a boot-time panic.

This fixes it by properly returning the lowest pending async ID: if
there is any running async work, that will have a lower ID than any
pending work, and we should _not_ look at the pending work list.

There were alternative patches from Jaswinder and James, but this one
also cleans up the code by removing the pointless 'ret' variable and
the unnecesary testing for an empty list around 'for_each_entry()' (if
the list is empty, the for_each_entry() thing just won't execute).

Fixes-bug: http://bugzilla.kernel.org/show_bug.cgi?id=13474
Reported-and-tested-by: Chris Clayton <chris2553@googlemail.com>
Cc: Jaswinder Singh Rajput <jaswinder@kernel.org>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-08 12:31:53 -07:00
..
irq Revert "genirq: assert that irq handlers are indeed running in hardirq context" 2009-05-01 15:16:04 +02:00
power PM: Do not hold dpm_list_mtx while disabling/enabling nonboot CPUs 2009-05-24 21:15:07 +02:00
time clockevents: prevent endless loop in tick_handle_periodic() 2009-05-02 10:22:27 +02:00
trace tracing: Append prompt in /debug/tracing/README file 2009-05-15 19:43:22 +02:00
.gitignore
acct.c
async.c async: Fix lack of boot-time console due to insufficient synchronization 2009-06-08 12:31:53 -07:00
audit_tree.c
audit.c
audit.h
auditfilter.c inotify: use GFP_NOFS in kernel_event() to work around a lockdep false-positive 2009-05-06 16:36:09 -07:00
auditsc.c
backtracetest.c
bounds.c
capability.c
cgroup_debug.c
cgroup_freezer.c
cgroup.c Convert obvious places to deactivate_locked_super() 2009-05-09 10:49:40 -04:00
compat.c
configs.c
cpu.c
cpuset.c
cred-internals.h
cred.c
delayacct.c
dma-coherent.c
dma.c
exec_domain.c
exit.c
extable.c
fork.c ptrace: tracehook_report_clone: fix false positives 2009-06-04 18:07:40 -07:00
freezer.c
futex_compat.c
futex.c futex: setup writeable mapping for futex ops which modify user space data 2009-05-19 23:36:52 +02:00
hrtimer.c
hung_task.c
itimer.c
kallsyms.c
Kconfig.freezer
Kconfig.hz
Kconfig.preempt
kexec.c PM: Do not hold dpm_list_mtx while disabling/enabling nonboot CPUs 2009-05-24 21:15:07 +02:00
kfifo.c
kgdb.c sysrq, intel_fb: fix sysrq g collision 2009-05-15 07:56:24 -05:00
kmod.c kmod: Release sub_info on cred allocation failure. 2009-05-26 12:11:19 -07:00
kprobes.c kprobes: fix to use text_mutex around arm/disarm kprobe 2009-05-08 16:23:48 -07:00
ksysfs.c
kthread.c
latencytop.c
lockdep_internals.h lockdep: increase MAX_LOCKDEP_ENTRIES and MAX_LOCKDEP_CHAINS 2009-05-12 19:59:52 +02:00
lockdep_proc.c
lockdep_states.h
lockdep.c
Makefile
marker.c
module.c
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
ns_cgroup.c
nsproxy.c
panic.c Fix caller information for warn_slowpath_null 2009-05-16 13:41:28 -07:00
params.c
pid_namespace.c
pid.c
pm_qos_params.c
posix-cpu-timers.c kernel/posix-cpu-timers.c: fix sparse warning 2009-04-30 08:08:31 +02:00
posix-timers.c
printk.c
profile.c
ptrace.c ptrace: revert "ptrace_detach: the wrong wakeup breaks the ERESTARTxxx logic" 2009-06-04 18:07:40 -07:00
rcuclassic.c
rcupdate.c
rcupreempt_trace.c
rcupreempt.c
rcutorture.c
rcutree_trace.c
rcutree.c
rcutree.h
relay.c
res_counter.c
resource.c
rtmutex_common.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rwsem.c
sched_clock.c sched: Fix fallback sched_clock()'s offset when using jiffies 2009-05-09 10:08:19 +02:00
sched_cpupri.c
sched_cpupri.h
sched_debug.c
sched_fair.c
sched_features.h
sched_idletask.c
sched_rt.c
sched_stats.h
sched.c sched: account system time properly 2009-04-29 15:02:28 +02:00
seccomp.c
semaphore.c
signal.c
slow-work.c
smp.c
softirq.c
softlockup.c
spinlock.c
srcu.c
stacktrace.c
stop_machine.c
sys_ni.c
sys.c
sysctl_check.c
sysctl.c Revert "mm: add /proc controls for pdflush threads" 2009-05-15 11:32:24 +02:00
taskstats.c
test_kprobes.c
time.c
timeconst.pl
timer.c
tracepoint.c
tsacct.c
uid16.c
up.c
user_namespace.c
user.c
utsname_sysctl.c
utsname.c
wait.c
workqueue.c