Oleg Nesterov aa1757f90b [PATCH] convert sighand_cache to use SLAB_DESTROY_BY_RCU ...

This patch borrows a clever Hugh's 'struct anon_vma' trick.

Without tasklist_lock held we can't trust task->sighand until we locked it
and re-checked that it is still the same.

But this means we don't need to defer 'kmem_cache_free(sighand)'.  We can
return the memory to slab immediately, all we need is to be sure that
sighand->siglock can't dissapear inside rcu protected section.

To do so we need to initialize ->siglock inside ctor function,
SLAB_DESTROY_BY_RCU does the rest.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2006-03-28 18:36:42 -08:00

..

irq

[PATCH] warn if free_irq() is called from IRQ context

2006-03-26 08:56:53 -08:00

power

[PATCH] swswsup: return correct load_image error

2006-03-26 08:56:55 -08:00

.gitignore

gitignore: ignore more generated files

2006-01-03 11:35:26 +01:00

acct.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

audit.c

[PATCH] fix audit_init failure path

2006-03-20 14:08:55 -05:00

audit.h

[PATCH] sem2mutex: audit_netlink_sem

2006-03-20 14:08:55 -05:00

auditfilter.c

[PATCH] sem2mutex: audit_netlink_sem

2006-03-20 14:08:55 -05:00

auditsc.c

Merge branch 'audit.b3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current

2006-03-25 09:24:53 -08:00

capability.c

[PATCH] refactor capable() to one implementation, add __capable() helper

2006-03-25 08:22:56 -08:00

compat.c

[PATCH] lightweight robust futexes: compat

2006-03-27 08:44:49 -08:00

configs.c

update the email address of Randy Dunlap

2006-01-03 13:37:51 +01:00

cpu.c

[PATCH] Notifier chain update: API changes

2006-03-27 08:44:50 -08:00

cpuset.c

[PATCH] cpuset: remove useless local variable initialization

2006-03-24 07:33:24 -08:00

dma.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

exec_domain.c

[PATCH] Fix module refcount leak in __set_personality()

2006-03-24 07:33:30 -08:00

exit.c

[PATCH] release_task: replace open-coded ptrace_unlink()

2006-03-28 18:36:41 -08:00

extable.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

fork.c

[PATCH] convert sighand_cache to use SLAB_DESTROY_BY_RCU

2006-03-28 18:36:42 -08:00

futex_compat.c

[PATCH] compat_sys_futex() warning fix

2006-03-28 09:16:09 -08:00

futex.c

[PATCH] lightweight robust futexes updates

2006-03-27 08:44:49 -08:00

hrtimer.c

[PATCH] hrtimers: remove data field

2006-03-26 08:57:03 -08:00

intermodule.c

[PATCH] missing license tag in intermodule

2006-02-05 11:06:52 -08:00

itimer.c

[PATCH] hrtimers: remove data field

2006-03-26 08:57:03 -08:00

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] move capable() to capability.h

2006-01-11 18:42:13 -08:00

kfifo.c

[PATCH] gfp flags annotations - part 1

2005-10-08 15:00:57 -07:00

kmod.c

[PATCH] wait_for_helper: trivial style cleanup

2006-03-28 18:36:41 -08:00

kprobes.c

[PATCH] kretprobe instance recycled by parent process

2006-03-26 08:57:04 -08:00

ksysfs.c

[PATCH] fix build error if CONFIG_SYSFS=n

2006-03-24 07:33:31 -08:00

kthread.c

[PATCH] find_task_by_pid() needs tasklist_lock

2006-03-25 08:22:57 -08:00

Makefile

[PATCH] lightweight robust futexes: compat

2006-03-27 08:44:49 -08:00

module.c

[PATCH] symversion warning fix

2006-03-28 09:16:02 -08:00

mutex-debug.c

[PATCH] fix/simplify mutex debugging code

2006-01-11 08:14:16 -08:00

mutex-debug.h

[PATCH] mutex subsystem, debugging code

2006-01-09 15:59:20 -08:00

mutex.c

[PATCH] mutex: trivial whitespace cleanups

2006-01-10 14:27:59 -08:00

mutex.h

[PATCH] mutex subsystem, core

2006-01-09 15:59:19 -08:00

panic.c

[PATCH] Notifier chain update: API changes

2006-03-27 08:44:50 -08:00

params.c

[PATCH] Change dash2underscore() return value to char

2006-03-28 09:16:03 -08:00

pid.c

[PATCH] pidhash: don't count idle threads

2006-03-28 18:36:41 -08:00

posix-cpu-timers.c

[PATCH] hrtimer: switch clock_nanosleep to hrtimer nanosleep API

2006-01-10 08:01:38 -08:00

posix-timers.c

[PATCH] hrtimers: remove data field

2006-03-26 08:57:03 -08:00

printk.c

[PATCH] console_setup() depends (wrongly?) on CONFIG_PRINTK

2006-03-24 07:33:27 -08:00

profile.c

[PATCH] Notifier chain update: API changes

2006-03-27 08:44:50 -08:00

ptrace.c

[PATCH] don't use REMOVE_LINKS/SET_LINKS for reparenting

2006-03-28 18:36:41 -08:00

rcupdate.c

[PATCH] rcu_process_callbacks: don't cli() while testing ->nxtlist

2006-03-24 07:33:20 -08:00

rcutorture.c

[PATCH] for_each_possible_cpu: fixes for generic part

2006-03-28 09:16:05 -08:00

relay.c

[PATCH] relay: consolidate sendfile() and read() code

2006-03-23 19:58:45 +01:00

resource.c

[PATCH] kernel/resource.c: __check_region(): remove pointless __deprecated

2006-01-10 08:02:02 -08:00

sched.c

[PATCH] for_each_possible_cpu: fixes for generic part

2006-03-28 09:16:05 -08:00

seccomp.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

signal.c

[PATCH] convert sighand_cache to use SLAB_DESTROY_BY_RCU

2006-03-28 18:36:42 -08:00

softirq.c

[PATCH] on_each_cpu(): disable local interrupts

2006-03-22 07:53:59 -08:00

softlockup.c

[PATCH] Notifier chain update: API changes

2006-03-27 08:44:50 -08:00

spinlock.c

[PATCH] BUILD_LOCK_OPS: cleanup preempt_disable() usage

2006-03-23 07:38:16 -08:00

stop_machine.c

[PATCH] Remove set_fs() in stop_machine()

2006-01-10 08:01:25 -08:00

sys_ni.c

[PATCH] lightweight robust futexes: core

2006-03-27 08:44:49 -08:00

sys.c

[PATCH] Notifier chain update: API changes

2006-03-27 08:44:50 -08:00

sysctl.c

[PATCH] Range checking in do_proc_dointvec_(userhz_)jiffies_conv

2006-03-24 07:33:20 -08:00

time.c

[PATCH] hrtimers: remove nsec_t typedef

2006-03-26 08:57:03 -08:00

timer.c

[PATCH] remove pps support

2006-03-25 08:23:02 -08:00

uid16.c

[PATCH] move capable() to capability.h

2006-01-11 18:42:13 -08:00

user.c

[PATCH] free_uid() locking improvement

2006-03-24 07:33:20 -08:00

wait.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

workqueue.c

[SCSI] add execute_in_process_context() API

2006-02-27 23:34:40 -06:00