Bron Gondwana 195cf453d2 mm/page-writeback: highmem_is_dirtyable option ... Add vm.highmem_is_dirtyable toggle A 32 bit machine with HIGHMEM64 enabled running DCC has an MMAPed file of approximately 2Gb size which contains a hash format that is written randomly by the dbclean process. On 2.6.16 this process took a few minutes. With lowmem only accounting of dirty ratios, this takes about 12 hours of 100% disk IO, all random writes. Include a toggle in /proc/sys/vm/highmem_is_dirtyable which can be set to 1 to add the highmem back to the total available memory count. [akpm@linux-foundation.org: Fix the CONFIG_DETECT_SOFTLOCKUP=y build] Signed-off-by: Bron Gondwana <brong@fastmail.fm> Cc: Ethan Solomita <solo@google.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: WU Fengguang <wfg@mail.ustc.edu.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-02-05 09:44:18 -08:00
..
irq	genirq: stackdump after the "Trying to free already-free IRQ" message	2008-01-30 13:33:24 +01:00
power	Page allocator: clean up pcp draining functions	2008-02-05 09:44:17 -08:00
time	tick-sched: add more debug information	2008-02-01 17:45:14 +01:00
.gitignore	…
Kconfig.hz	sched: high-res preemption tick	2008-01-25 21:08:29 +01:00
Kconfig.preempt	sched: remove the !PREEMPT_BKL code	2008-01-25 21:08:33 +01:00
Makefile	kobject: Always build in kernel/ksysfs.o.	2008-02-02 15:14:46 -08:00
acct.c	acct: real_parent ppid	2008-01-07 14:55:37 -08:00
audit.c	[AUDIT] ratelimit printk messages audit	2008-02-01 14:25:04 -05:00
audit.h	[PATCH] audit: watching subtrees	2007-10-21 02:37:45 -04:00
audit_tree.c	[PATCH] audit: watching subtrees	2007-10-21 02:37:45 -04:00
auditfilter.c	[AUDIT] make audit=0 really stop audit messages	2008-02-01 14:24:33 -05:00
auditsc.c	[AUDIT] create context if auditing was ever enabled	2008-02-01 14:24:45 -05:00
backtracetest.c	x86: add a simple backtrace test module	2008-01-30 13:33:08 +01:00
capability.c	Uninline find_pid etc set of functions	2007-10-19 11:53:41 -07:00
cgroup.c	Improve cgroup printks	2007-11-14 18:45:37 -08:00
cgroup_debug.c	Task Control Groups: simple task cgroup debug info subsystem	2007-10-19 11:53:36 -07:00
compat.c	Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt	2007-10-18 15:12:41 -07:00
configs.c	…
cpu.c	cpu-hotplug: replace per-subsystem mutexes with get_online_cpus()	2008-01-25 21:08:02 +01:00
cpuset.c	cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus()	2008-01-25 21:08:02 +01:00
delayacct.c	Add scaled time to taskstats based process accounting	2007-10-18 14:37:28 -07:00
dma.c	…
exec_domain.c	whitespace fixes: execution domains	2007-10-18 14:37:26 -07:00
exit.c	exec: rework the group exit and fix the race with kill	2008-02-05 09:44:07 -08:00
extable.c	module: Don't report discarded init pages as kernel text.	2008-01-29 17:13:18 +11:00
fork.c	add mm argument to pte/pmd/pud/pgd_free	2008-02-05 09:44:18 -08:00
futex.c	futex: Add bitset conditional wait/wakeup functionality	2008-02-01 17:45:14 +01:00
futex_compat.c	futex: Add bitset conditional wait/wakeup functionality	2008-02-01 17:45:14 +01:00
hrtimer.c	timerfd: new timerfd API	2008-02-05 09:44:07 -08:00
itimer.c	whitespace fixes: interval timers	2007-10-18 14:37:26 -07:00
kallsyms.c	module: make module_address_lookup safe	2008-01-29 17:13:23 +11:00
kexec.c	vmcoreinfo: add the array length of "free_list" for filtering free pages	2008-01-08 16:10:36 -08:00
kfifo.c	…
kmod.c	Fix unbalanced helper_lock in kernel/kmod.c	2008-01-17 15:38:59 -08:00
kprobes.c	x86: kprobes: add kprobes smoke tests that run on boot	2008-01-30 13:32:53 +01:00
ksysfs.c	Kobject: convert remaining kobject_unregister() to kobject_put()	2008-01-24 20:40:40 -08:00
kthread.c	sched: fix, always create kernel threads with normal priority	2008-01-25 21:08:33 +01:00
latency.c	…
latencytop.c	sched: latencytop support	2008-01-25 21:08:34 +01:00
lockdep.c	softlockup: automatically detect hung TASK_UNINTERRUPTIBLE tasks	2008-01-25 21:08:02 +01:00
lockdep_internals.h	…
lockdep_proc.c	…
marker.c	Linux Kernel Markers: fix marker mutex not taken upon module load	2007-11-14 18:45:40 -08:00
module.c	x86/non-x86: percpu, node ids, apic ids x86.git fixup	2008-01-30 13:33:32 +01:00
mutex-debug.c	…
mutex-debug.h	…
mutex.c	Add mutex_lock_killable	2007-12-06 17:37:59 -05:00
mutex.h	…
notifier.c	Add kernel/notifier.c	2007-10-19 11:53:34 -07:00
ns_cgroup.c	cgroups: implement namespace tracking subsystem	2007-10-19 11:53:37 -07:00
nsproxy.c	pid namespaces: allow cloning of new namespace	2007-10-19 11:53:39 -07:00
panic.c	debug: add the end-of-trace marker and the module list to	2008-01-30 13:32:50 +01:00
params.c	module: fix the module name length in param_sysfs_builtin	2008-01-29 17:13:24 +11:00
pid.c	pidns: Place under CONFIG_EXPERIMENTAL	2007-11-14 18:45:43 -08:00
posix-cpu-timers.c	sched: rt-watchdog: fix .rlim_max = RLIM_INFINITY	2008-01-25 21:08:32 +01:00
posix-timers.c	timerfd: new timerfd API	2008-02-05 09:44:07 -08:00
printk.c	debug: turn ignore_loglevel into an early param	2008-01-31 22:45:23 +01:00
profile.c	debug: clean up kernel/profile.c	2008-01-25 21:08:33 +01:00
ptrace.c	Merge branch 'task_killable' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc	2008-02-01 11:45:47 +11:00
rcuclassic.c	Preempt-RCU: implementation	2008-01-25 21:08:24 +01:00
rcupdate.c	Preempt-RCU: fix rcu_barrier for preemptive environment.	2008-01-25 21:08:24 +01:00
rcupreempt.c	Preempt-RCU: CPU Hotplug handling	2008-01-25 21:08:25 +01:00
rcupreempt_trace.c	Preempt-RCU: implementation	2008-01-25 21:08:24 +01:00
rcutorture.c	cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus()	2008-01-25 21:08:02 +01:00
relay.c	vm audit: add VM_DONTEXPAND to mmap for drivers that need it	2008-02-04 07:55:38 -08:00
resource.c	Add IORESOUCE_BUSY flag for System RAM	2007-11-14 18:45:39 -08:00
rtmutex-debug.c	Use helpers to obtain task pid in printks	2007-10-19 11:53:43 -07:00
rtmutex-debug.h	…
rtmutex-tester.c	Driver core: change sysdev classes to use dynamic kobject names	2008-01-24 20:40:40 -08:00
rtmutex.c	Use helpers to obtain task pid in printks	2007-10-19 11:53:43 -07:00
rtmutex.h	…
rtmutex_common.h	…
rwsem.c	sched: mark rwsem functions as __sched for wchan/profiling	2007-12-18 15:21:13 +01:00
sched.c	Merge branch 'task_killable' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc	2008-02-01 11:45:47 +11:00
sched_debug.c	sched: keep total / count stats in addition to the max for	2008-01-25 21:08:35 +01:00
sched_fair.c	sched: let +nice tasks have smaller impact	2008-01-31 22:45:22 +01:00
sched_idletask.c	sched: high-res preemption tick	2008-01-25 21:08:29 +01:00
sched_rt.c	sched: fix goto retry in pick_next_task_rt()	2008-01-25 21:08:34 +01:00
sched_stats.h	sched: clean up kernel/sched_stat.h	2007-11-28 15:52:56 +01:00
seccomp.c	…
signal.c	exec: rework the group exit and fix the race with kill	2008-02-05 09:44:07 -08:00
softirq.c	time: track accurate idle time with tick_sched.idle_sleeptime	2008-01-30 13:30:04 +01:00
softlockup.c	debug: softlockup looping fix	2008-02-02 14:27:45 +11:00
spinlock.c	spinlock: lockbreak cleanup	2008-01-30 13:31:20 +01:00
srcu.c	…
stacktrace.c	…
stop_machine.c	cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus()	2008-01-25 21:08:02 +01:00
sys.c	x86: ignore the sys_getcpu() tcache parameter	2007-11-17 16:27:00 +01:00
sys_ni.c	timerfd: new timerfd API	2008-02-05 09:44:07 -08:00
sysctl.c	mm/page-writeback: highmem_is_dirtyable option	2008-02-05 09:44:18 -08:00
sysctl_check.c	sysctl: Infrastructure for per namespace sysctls	2008-01-28 14:55:17 -08:00
taskstats.c	kernel/taskstats.c: fix bogus nlmsg_free()	2007-11-14 18:45:44 -08:00
test_kprobes.c	x86: kprobes: add kprobes smoke tests that run on boot	2008-01-30 13:32:53 +01:00
time.c	timekeeping: update xtime_cache when time(zone) changes	2008-02-01 17:45:13 +01:00
timer.c	Merge branch 'task_killable' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc	2008-02-01 11:45:47 +11:00
tsacct.c	Add scaled time to taskstats based process accounting	2007-10-18 14:37:28 -07:00
uid16.c	…
user.c	uids: merge multiple error paths in alloc_uid() into one	2008-01-25 21:08:26 +01:00
user_namespace.c	…
utsname.c	…
utsname_sysctl.c	Isolate the UTS namespace's domainname and hostname back	2007-11-29 09:24:53 -08:00
wait.c	wait: Use TASK_NORMAL	2007-12-06 17:34:36 -05:00
workqueue.c	cpu-hotplug: replace per-subsystem mutexes with get_online_cpus()	2008-01-25 21:08:02 +01:00