Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Eric W. Biederman 99f8955183 [PATCH] proc: don't lock task_structs indefinitely ... Every inode in /proc holds a reference to a struct task_struct. If a directory or file is opened and remains open after the the task exits this pinning continues. With 8K stacks on a 32bit machine the amount pinned per file descriptor is about 10K. Normally I would figure a reasonable per user process limit is about 100 processes. With 80 processes, with a 1000 file descriptors each I can trigger the 00M killer on a 32bit kernel, because I have pinned about 800MB of useless data. This patch replaces the struct task_struct pointer with a pointer to a struct task_ref which has a struct task_struct pointer. The so the pinning of dead tasks does not happen. The code now has to contend with the fact that the task may now exit at any time. Which is a little but not muh more complicated. With this change it takes about 1000 processes each opening up 1000 file descriptors before I can trigger the OOM killer. Much better. [mlp@google.com: task_mmu small fixes] Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Paul Jackson <pj@sgi.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Albert Cahalan <acahalan@gmail.com> Signed-off-by: Prasanna Meda <mlp@google.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2006-06-26 09:58:25 -07:00
..
irq	[PATCH] adjust handle_IRR_event() return type	2006-06-23 07:43:08 -07:00
power	Revert "swsusp special saveable pages support" commits	2006-06-25 18:41:00 -07:00
time	[PATCH] time: rename clocksource functions	2006-06-26 09:58:21 -07:00
.gitignore
acct.c	[PATCH] pacct: none-delayed process accounting accumulation	2006-06-25 10:01:25 -07:00
audit.c	[PATCH] log more info for directory entry change events	2006-06-20 05:25:28 -04:00
audit.h	[PATCH] log more info for directory entry change events	2006-06-20 05:25:28 -04:00
auditfilter.c	[PATCH] log more info for directory entry change events	2006-06-20 05:25:28 -04:00
auditsc.c	[PATCH] Doc: add audit & acct to DocBook	2006-06-23 07:43:07 -07:00
capability.c
compat.c	[PATCH] N32 sigset and __COMPAT_ENDIAN_SWAP__	2006-06-25 10:01:15 -07:00
configs.c
cpu.c	[PATCH] Convert kernel/cpu.c to mutexes	2006-06-26 09:58:16 -07:00
cpuset.c	[PATCH] proc: don't lock task_structs indefinitely	2006-06-26 09:58:25 -07:00
dma.c
exec_domain.c
exit.c	[PATCH] proc: Rewrite the proc dentry flush on exit optimization	2006-06-26 09:58:24 -07:00
extable.c	[PATCH] symbol_put_addr() locks kernel	2006-05-15 11:20:55 -07:00
fork.c	[PATCH] proc: Rewrite the proc dentry flush on exit optimization	2006-06-26 09:58:24 -07:00
futex.c	[PATCH] VFS: Permit filesystem to override root dentry on mount	2006-06-23 07:42:45 -07:00
futex_compat.c
hrtimer.c	[PATCH] ktime/hrtimer: fix kernel-doc comments	2006-06-25 10:01:23 -07:00
itimer.c
kallsyms.c
Kconfig.hz
Kconfig.preempt
kexec.c	[PATCH] Add a sysfs file to determine if a kexec kernel is loaded	2006-06-23 07:43:02 -07:00
kfifo.c
kmod.c
kprobes.c	[PATCH] Notify page fault call chain	2006-06-26 09:58:22 -07:00
ksysfs.c	[PATCH] Add a sysfs file to determine if a kexec kernel is loaded	2006-06-23 07:43:02 -07:00
kthread.c	[PATCH] kthread: move kernel-doc and put it into DocBook	2006-06-25 10:01:24 -07:00
Makefile	[PATCH] Time: Use clocksource infrastructure for update_wall_time	2006-06-26 09:58:20 -07:00
module.c	[PATCH] ensure NULL deref can't possibly happen in is_exported()	2006-06-25 10:00:59 -07:00
mutex-debug.c	[PATCH] work around ppc64 bootup bug by making mutex-debugging save/restore irqs	2006-06-26 09:58:16 -07:00
mutex-debug.h	[PATCH] work around ppc64 bootup bug by making mutex-debugging save/restore irqs	2006-06-26 09:58:16 -07:00
mutex.c	[PATCH] work around ppc64 bootup bug by making mutex-debugging save/restore irqs	2006-06-26 09:58:16 -07:00
mutex.h	[PATCH] work around ppc64 bootup bug by making mutex-debugging save/restore irqs	2006-06-26 09:58:16 -07:00
panic.c
params.c
pid.c
posix-cpu-timers.c	[PATCH] arm_timer: remove a racy and obsolete PF_EXITING check	2006-06-17 10:52:13 -07:00
posix-timers.c
printk.c	[PATCH] printk time parameter	2006-06-25 10:01:13 -07:00
profile.c	[PATCH] Remove __devinit and __cpuinit from notifier_call definitions	2006-04-26 08:30:03 -07:00
ptrace.c	ptrace_attach: fix possible deadlock schenario with irqs	2006-05-11 11:08:49 -07:00
rcupdate.c	[PATCH] Make RCU API inaccessible to non-GPL Linux kernel modules	2006-06-23 07:43:07 -07:00
rcutorture.c
relay.c
resource.c
sched.c	[PATCH] cpu hotplug: fix CPU_UP_CANCEL handling	2006-06-25 10:01:22 -07:00
seccomp.c
signal.c	[PATCH] collect sid of those who send signals to auditd	2006-06-20 05:25:21 -04:00
softirq.c	[PATCH] cpu hotplug: fix CPU_UP_CANCEL handling	2006-06-25 10:01:22 -07:00
softlockup.c	[PATCH] cpu hotplug: fix CPU_UP_CANCEL handling	2006-06-25 10:01:22 -07:00
spinlock.c
stop_machine.c	[PATCH] kthread: convert stop_machine into a kthread	2006-06-25 10:01:22 -07:00
sys.c	[PATCH] kernel/sys.c: cleanups	2006-06-25 10:01:06 -07:00
sys_ni.c	[PATCH] sys_move_pages: 32bit support (i386, x86_64)	2006-06-23 07:42:53 -07:00
sysctl.c	[PATCH] Get rid of /proc/sys/proc	2006-06-25 10:01:15 -07:00
time.c	[PATCH] Time: Introduce arch generic time accessors	2006-06-26 09:58:20 -07:00
timer.c	[PATCH] fix and optimize clock source update	2006-06-26 09:58:21 -07:00
uid16.c
user.c	[PATCH] selinux: add hooks for key subsystem	2006-06-22 15:05:55 -07:00
wait.c
workqueue.c	[PATCH] cpu hotplug: fix CPU_UP_CANCEL handling	2006-06-25 10:01:22 -07:00