linux/kernel/exit.c, branch v2.6.19

[PATCH] taskstats_tgid_free: fix usage

2006-10-28T18:30:54Z

taskstats_tgid_free() is called on copy_process's error path. This is wrong. IF (clone_flags & CLONE_THREAD) We should not clear ->signal->taskstats, current uses it, it probably has a valid accumulated info. ELSE taskstats_tgid_init() set ->signal->taskstats = NULL, there is nothing to free. Move the callsite to __exit_signal(). We don't need any locking, entire thread group is exiting, nobody should have a reference to soon to be released ->signal. Signed-off-by: Oleg Nesterov Cc: Shailabh Nagar Cc: Balbir Singh Cc: Jay Lan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] namespaces: exit_task_namespaces() invalidates nsproxy

2006-10-02T14:57:21Z

exit_task_namespaces() has replaced the former exit_namespace(). It invalidates task->nsproxy and associated namespaces. This is an issue for the (futur) pid namespace which is required to be valid in exit_notify(). This patch moves exit_task_namespaces() after exit_notify() to keep nsproxy valid. Signed-off-by: Cedric Le Goater Cc: Serge E. Hallyn Cc: Kirill Korotaev Cc: "Eric W. Biederman" Cc: Herbert Poetzl Cc: Andrey Savochkin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] namespaces: incorporate fs namespace into nsproxy

2006-10-02T14:57:20Z

This moves the mount namespace into the nsproxy. The mount namespace count now refers to the number of nsproxies point to it, rather than the number of tasks. As a result, the unshare_namespace() function in kernel/fork.c no longer checks whether it is being shared. Signed-off-by: Serge Hallyn Cc: Kirill Korotaev Cc: "Eric W. Biederman" Cc: Herbert Poetzl Cc: Andrey Savochkin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] namespaces: add nsproxy

2006-10-02T14:57:20Z

This patch adds a nsproxy structure to the task struct. Later patches will move the fs namespace pointer into this structure, and introduce a new utsname namespace into the nsproxy. The vserver and openvz functionality, then, would be implemented in large part by virtualizing/isolating more and more resources into namespaces, each contained in the nsproxy. [akpm@osdl.org: build fix] Signed-off-by: Serge Hallyn Cc: Kirill Korotaev Cc: "Eric W. Biederman" Cc: Herbert Poetzl Cc: Andrey Savochkin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] csa: convert CONFIG tag for extended accounting routines

2006-10-01T07:39:29Z

There were a few accounting data/macros that are used in CSA but are #ifdef'ed inside CONFIG_BSD_PROCESS_ACCT. This patch is to change those ifdef's from CONFIG_BSD_PROCESS_ACCT to CONFIG_TASK_XACCT. A few defines are moved from kernel/acct.c and include/linux/acct.h to kernel/tsacct.c and include/linux/tsacct_kern.h. Signed-off-by: Jay Lan Cc: Shailabh Nagar Cc: Balbir Singh Cc: Jes Sorensen Cc: Chris Sturtivant Cc: Tony Ernst Cc: Guillaume Thouvenin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] BLOCK: Remove duplicate declaration of exit_io_context() [try #6]

2006-09-30T18:31:20Z

Remove the duplicate declaration of exit_io_context() from linux/sched.h. Signed-Off-By: David Howells Signed-off-by: Jens Axboe

[PATCH] introduce TASK_DEAD state

2006-09-29T16:18:21Z

I am not sure about this patch, I am asking Ingo to take a decision. task_struct->state == EXIT_DEAD is a very special case, to avoid a confusion it makes sense to introduce a new state, TASK_DEAD, while EXIT_DEAD should live only in ->exit_state as documented in sched.h. Note that this state is not visible to user-space, get_task_state() masks off unsuitable states. Signed-off-by: Oleg Nesterov Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] kill PF_DEAD flag

2006-09-29T16:18:20Z

After the previous change (->flags & PF_DEAD) <=> (->state == EXIT_DEAD), we don't need PF_DEAD any longer. Signed-off-by: Oleg Nesterov Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] set EXIT_DEAD state in do_exit(), not in schedule()

2006-09-29T16:18:20Z

schedule() checks PF_DEAD on every context switch and sets ->state = EXIT_DEAD to ensure that the exiting task will be deactivated. Note that this EXIT_DEAD is in fact a "random" value, we can use any bit except normal TASK_XXX values. It is better to set this state in do_exit() along with PF_DEAD flag and remove that check in schedule(). We are safe wrt concurrent try_to_wake_up() (for example ptrace, tkill), it can not change task's ->state: the 'state' argument of try_to_wake_up() can't have EXIT_DEAD bit. And in case when try_to_wake_up() sees a stale value of ->state == TASK_RUNNING it will do nothing. Signed-off-by: Oleg Nesterov Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] reparent_to_init(): use has_rt_policy()

2006-09-29T16:18:18Z

Remove open-coded has_rt_policy(), no changes in kernel/exit.o Signed-off-by: Oleg Nesterov Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Steven Rostedt Cc: Nick Piggin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds