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kill daemonize()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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1 parent 02232f8 commit c4144670fd9b34d6eae22c9f83751745898e8243 Al Viro committed Oct 2, 2012
Showing with 1 addition and 128 deletions.
  1. +1 −3 drivers/staging/gdm72xx/gdm_usb.c
  2. +0 −6 fs/file.c
  3. +0 −24 fs/fs_struct.c
  4. +0 −1 include/linux/fdtable.h
  5. +0 −1 include/linux/fs_struct.h
  6. +0 −1 include/linux/sched.h
  7. +0 −92 kernel/exit.c
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4 drivers/staging/gdm72xx/gdm_usb.c
@@ -701,8 +701,6 @@ static int k_mode_thread(void *arg)
unsigned long flags, flags2, expire;
int ret;
- daemonize("k_mode_wimax");
-
while (!k_mode_stop) {
spin_lock_irqsave(&k_lock, flags2);
@@ -764,7 +762,7 @@ static struct usb_driver gdm_usb_driver = {
static int __init usb_gdm_wimax_init(void)
{
#ifdef CONFIG_WIMAX_GDM72XX_K_MODE
- kthread_run(k_mode_thread, NULL, "WiMax_thread");
+ kthread_run(k_mode_thread, NULL, "k_mode_wimax");
#endif /* CONFIG_WIMAX_GDM72XX_K_MODE */
return usb_register(&gdm_usb_driver);
}
View
6 fs/file.c
@@ -519,12 +519,6 @@ struct files_struct init_files = {
.file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock),
};
-void daemonize_descriptors(void)
-{
- atomic_inc(&init_files.count);
- reset_files_struct(&init_files);
-}
-
/*
* allocate a file descriptor, mark it busy.
*/
View
24 fs/fs_struct.c
@@ -164,27 +164,3 @@ struct fs_struct init_fs = {
.seq = SEQCNT_ZERO,
.umask = 0022,
};
-
-void daemonize_fs_struct(void)
-{
- struct fs_struct *fs = current->fs;
-
- if (fs) {
- int kill;
-
- task_lock(current);
-
- spin_lock(&init_fs.lock);
- init_fs.users++;
- spin_unlock(&init_fs.lock);
-
- spin_lock(&fs->lock);
- current->fs = &init_fs;
- kill = !--fs->users;
- spin_unlock(&fs->lock);
-
- task_unlock(current);
- if (kill)
- free_fs_struct(fs);
- }
-}
View
1 include/linux/fdtable.h
@@ -95,7 +95,6 @@ struct task_struct;
struct files_struct *get_files_struct(struct task_struct *);
void put_files_struct(struct files_struct *fs);
void reset_files_struct(struct files_struct *);
-void daemonize_descriptors(void);
int unshare_files(struct files_struct **);
struct files_struct *dup_fd(struct files_struct *, int *);
void do_close_on_exec(struct files_struct *);
View
1 include/linux/fs_struct.h
@@ -21,7 +21,6 @@ extern void set_fs_root(struct fs_struct *, struct path *);
extern void set_fs_pwd(struct fs_struct *, struct path *);
extern struct fs_struct *copy_fs_struct(struct fs_struct *);
extern void free_fs_struct(struct fs_struct *);
-extern void daemonize_fs_struct(void);
extern int unshare_fs_struct(void);
static inline void get_fs_root(struct fs_struct *fs, struct path *root)
View
1 include/linux/sched.h
@@ -2283,7 +2283,6 @@ extern void flush_itimer_signals(void);
extern void do_group_exit(int);
-extern void daemonize(const char *, ...);
extern int allow_signal(int);
extern int disallow_signal(int);
View
92 kernel/exit.c
@@ -322,43 +322,6 @@ kill_orphaned_pgrp(struct task_struct *tsk, struct task_struct *parent)
}
}
-/**
- * reparent_to_kthreadd - Reparent the calling kernel thread to kthreadd
- *
- * If a kernel thread is launched as a result of a system call, or if
- * it ever exits, it should generally reparent itself to kthreadd so it
- * isn't in the way of other processes and is correctly cleaned up on exit.
- *
- * The various task state such as scheduling policy and priority may have
- * been inherited from a user process, so we reset them to sane values here.
- *
- * NOTE that reparent_to_kthreadd() gives the caller full capabilities.
- */
-static void reparent_to_kthreadd(void)
-{
- write_lock_irq(&tasklist_lock);
-
- ptrace_unlink(current);
- /* Reparent to init */
- current->real_parent = current->parent = kthreadd_task;
- list_move_tail(&current->sibling, &current->real_parent->children);
-
- /* Set the exit signal to SIGCHLD so we signal init on exit */
- current->exit_signal = SIGCHLD;
-
- if (task_nice(current) < 0)
- set_user_nice(current, 0);
- /* cpus_allowed? */
- /* rt_priority? */
- /* signals? */
- memcpy(current->signal->rlim, init_task.signal->rlim,
- sizeof(current->signal->rlim));
-
- atomic_inc(&init_cred.usage);
- commit_creds(&init_cred);
- write_unlock_irq(&tasklist_lock);
-}
-
void __set_special_pids(struct pid *pid)
{
struct task_struct *curr = current->group_leader;
@@ -370,13 +333,6 @@ void __set_special_pids(struct pid *pid)
change_pid(curr, PIDTYPE_PGID, pid);
}
-static void set_special_pids(struct pid *pid)
-{
- write_lock_irq(&tasklist_lock);
- __set_special_pids(pid);
- write_unlock_irq(&tasklist_lock);
-}
-
/*
* Let kernel threads use this to say that they allow a certain signal.
* Must not be used if kthread was cloned with CLONE_SIGHAND.
@@ -416,54 +372,6 @@ int disallow_signal(int sig)
EXPORT_SYMBOL(disallow_signal);
-/*
- * Put all the gunge required to become a kernel thread without
- * attached user resources in one place where it belongs.
- */
-
-void daemonize(const char *name, ...)
-{
- va_list args;
- sigset_t blocked;
-
- va_start(args, name);
- vsnprintf(current->comm, sizeof(current->comm), name, args);
- va_end(args);
-
- /*
- * If we were started as result of loading a module, close all of the
- * user space pages. We don't need them, and if we didn't close them
- * they would be locked into memory.
- */
- exit_mm(current);
- /*
- * We don't want to get frozen, in case system-wide hibernation
- * or suspend transition begins right now.
- */
- current->flags |= (PF_NOFREEZE | PF_KTHREAD);
-
- if (current->nsproxy != &init_nsproxy) {
- get_nsproxy(&init_nsproxy);
- switch_task_namespaces(current, &init_nsproxy);
- }
- set_special_pids(&init_struct_pid);
- proc_clear_tty(current);
-
- /* Block and flush all signals */
- sigfillset(&blocked);
- sigprocmask(SIG_BLOCK, &blocked, NULL);
- flush_signals(current);
-
- /* Become as one with the init task */
-
- daemonize_fs_struct();
- daemonize_descriptors();
-
- reparent_to_kthreadd();
-}
-
-EXPORT_SYMBOL(daemonize);
-
#ifdef CONFIG_MM_OWNER
/*
* A task is exiting. If it owned this mm, find a new owner for the mm.

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