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Andrew Morton 9d0243bca3 [PATCH] drop-pagecache 
Add /proc/sys/vm/drop_caches.  When written to, this will cause the kernel to
discard as much pagecache and/or reclaimable slab objects as it can.  THis
operation requires root permissions.

It won't drop dirty data, so the user should run `sync' first.

Caveats:

a) Holds inode_lock for exorbitant amounts of time.

b) Needs to be taught about NUMA nodes: propagate these all the way through
   so the discarding can be controlled on a per-node basis.

This is a debugging feature: useful for getting consistent results between
filesystem benchmarks.  We could possibly put it under a config option, but
it's less than 300 bytes.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:12:40 -08:00
..
irq
[PATCH] Alpha: convert to generic irq framework (generic part)
2006-01-06 08:33:40 -08:00
power
[PATCH] swsusp: save image header first
2006-01-06 08:33:43 -08:00
.gitignore
gitignore: ignore more generated files
2006-01-03 11:35:26 +01:00
acct.c
[PATCH] s390: cputime_t fixes
2006-01-06 08:33:49 -08:00
audit.c
[PATCH] Add try_to_freeze to kauditd
2005-12-12 08:57:43 -08:00
auditsc.c
[PATCH] gfp_t: kernel/*
2005-10-28 08:16:49 -07:00
capability.c
[PATCH] kernel/capability.c: add kerneldoc
2005-07-27 16:26:06 -07:00
compat.c
[PATCH] kernel: fix-up schedule_timeout() usage
2005-09-10 10:06:37 -07:00
configs.c
update the email address of Randy Dunlap
2006-01-03 13:37:51 +01:00
cpu.c
[PATCH] clean up lock_cpu_hotplug() in cpufreq
2005-11-28 14:42:23 -08:00
cpuset.c
[PATCH] cpuset: fix return without releasing semaphore
2005-11-13 18:14:11 -08:00
crash_dump.c
[PATCH] kernel/crash_dump.c: add kerneldoc
2005-07-27 16:26:06 -07:00
dma.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
exec_domain.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
exit.c
[PATCH] m68k: introduce task_thread_info
2005-11-13 18:14:13 -08:00
extable.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
fork.c
[PATCH] cpuset fork locking fix
2005-11-28 14:42:24 -08:00
futex.c
[PATCH] FRV: Make futex code compilable on nommu [try #2]
2006-01-06 08:33:33 -08:00
intermodule.c
[PATCH] introduce and use kzalloc
2005-09-07 16:57:45 -07:00
itimer.c
[PATCH] itimer fixes
2005-07-27 16:25:51 -07:00
kallsyms.c
[PATCH] fix missing includes
2005-10-30 17:37:32 -08:00
Kconfig.hz
[PATCH] i386: Selectable Frequency of the Timer Interrupt
2005-06-23 09:45:10 -07:00
Kconfig.preempt
[PATCH] sched: voluntary kernel preemption
2005-06-25 16:24:45 -07:00
kexec.c
[PATCH] mm: split page table lock
2005-10-29 21:40:42 -07:00
kfifo.c
[PATCH] gfp flags annotations - part 1
2005-10-08 15:00:57 -07:00
kmod.c
[PATCH] Keys: Get rid of warning in kmod.c if keys disabled
2005-10-30 17:37:23 -08:00
kprobes.c
[PATCH] kprobes: increment kprobe missed count for multiprobes
2005-12-12 08:57:45 -08:00
ksysfs.c
[PATCH] kobject_uevent CONFIG_NET=n fix
2006-01-04 16:18:08 -08:00
kthread.c
[PATCH] Add kthread_stop_sem()
2005-10-30 17:37:17 -08:00
Makefile
[PATCH] RCU torture-testing kernel module
2005-10-30 17:37:27 -08:00
module.c
[PATCH] kernel/module.c: removed dead code
2006-01-06 08:33:59 -08:00
panic.c
[PATCH] s390: cleanup Kconfig
2006-01-06 08:33:53 -08:00
params.c
[PATCH] kernel/params.c: fix sysfs access with CONFIG_MODULES=n
2005-12-20 10:31:33 -08:00
pid.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
posix-cpu-timers.c
[PATCH] Fix posix-cpu-timers sched_time accumulation
2006-01-06 20:23:04 -08:00
posix-timers.c
[PATCH] timespec: normalize off by one errors
2005-11-13 18:14:17 -08:00
printk.c
[PATCH] Fix crash in unregister_console()
2005-11-23 16:08:39 -08:00
profile.c
[PATCH] mostly_read data section
2005-07-07 18:23:46 -07:00
ptrace.c
[PATCH] Fix crash when ptrace poking hugepage areas
2005-11-29 19:47:03 -08:00
rcupdate.c
[PATCH] Fix RCU race in access of nohz_cpu_mask
2005-12-12 08:57:42 -08:00
rcutorture.c
[PATCH] Fix bug in RCU torture test
2005-12-12 08:57:42 -08:00
resource.c
[PATCH] introduce and use kzalloc
2005-09-07 16:57:45 -07:00
sched.c
[PATCH] m68k: introduce setup_thread_stack() and end_of_stack()
2005-11-13 18:14:13 -08:00
seccomp.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
signal.c
[PATCH] signal handling: revert sigkill priority fix
2005-11-13 18:14:15 -08:00
softirq.c
[PATCH] cpu hoptlug: avoid usage of smp_processor_id() in preemptible code
2005-11-07 07:53:29 -08:00
softlockup.c
[PATCH] quieten softlockup at boot
2005-11-09 07:55:50 -08:00
spinlock.c
[PATCH] spinlock consolidation
2005-09-10 10:06:21 -07:00
stop_machine.c
[PATCH] stop_machine() vs. synchronous IPI send deadlock
2005-11-13 18:14:16 -08:00
sys_ni.c
[PATCH] remove sys_set_zone_reclaim()
2005-08-01 10:03:56 -07:00
sys.c
[PATCH] kprobes: no probes on critical path
2005-12-12 08:57:45 -08:00
sysctl.c
[PATCH] drop-pagecache
2006-01-08 20:12:40 -08:00
time.c
[PATCH] Add getnstimestamp function
2005-12-12 08:57:42 -08:00
timer.c
[PATCH] jiffies_64 cleanup
2005-10-30 17:37:25 -08:00
uid16.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
user.c
[PATCH] inotify
2005-07-12 20:38:38 -07:00
wait.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
workqueue.c
[PATCH] Fix hardcoded cpu=0 in workqueue for per_cpu_ptr() calls
2005-11-28 14:42:23 -08:00