Messages in this thread Patch in this message | | | Date | Wed, 1 Sep 2004 10:33:27 -0700 | From | William Lee Irwin III <> | Subject | [5/7] back out renaming of struct pid |
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On Wed, Sep 01, 2004 at 10:32:18AM -0700, William Lee Irwin III wrote: > Now that the basic syntactic issues with the macros have been dealt > with, the semantic issue of properly terminating the list iteration > remains. The following patch introduces a local variable __list__ in > do_each_task_pid() to store the virtual address of the list head of the > leader of the collision chain so that the iteration may be properly > terminated.
The renaming of struct pid was spurious; the following patch backs out this renaming.
Index: kirill-2.6.9-rc1-mm2/kernel/sys.c =================================================================== --- kirill-2.6.9-rc1-mm2.orig/kernel/sys.c 2004-09-01 08:44:05.794680744 -0700 +++ kirill-2.6.9-rc1-mm2/kernel/sys.c 2004-09-01 09:29:03.608550696 -0700 @@ -1165,7 +1165,7 @@ asmlinkage long sys_setsid(void) { - struct pid_struct *pid; + struct pid *pid; int err = -EPERM; if (!thread_group_leader(current)) Index: kirill-2.6.9-rc1-mm2/kernel/pid.c =================================================================== --- kirill-2.6.9-rc1-mm2.orig/kernel/pid.c 2004-09-01 08:44:05.779683024 -0700 +++ kirill-2.6.9-rc1-mm2/kernel/pid.c 2004-09-01 09:31:25.972908024 -0700 @@ -148,10 +148,10 @@ return -1; } -fastcall struct pid_struct *find_pid(enum pid_type type, int nr) +struct pid * fastcall find_pid(enum pid_type type, int nr) { struct hlist_node *elem; - struct pid_struct *pid; + struct pid *pid; hlist_for_each_entry(pid, elem, &pid_hash[type][pid_hashfn(nr)], hash_list) { @@ -163,7 +163,7 @@ int fastcall attach_pid(task_t *task, enum pid_type type, int nr) { - struct pid_struct *pid, *task_pid; + struct pid *pid, *task_pid; task_pid = &task->pids[type]; pid = find_pid(type, nr); @@ -182,7 +182,7 @@ static inline int __detach_pid(task_t *task, enum pid_type type) { - struct pid_struct *pid, *pid_next; + struct pid *pid, *pid_next; int nr; pid = &task->pids[type]; @@ -190,7 +190,7 @@ hlist_del(&pid->hash_list); if (!list_empty(&pid->pid_list)) { pid_next = list_entry(pid->pid_list.next, - struct pid_struct, pid_list); + struct pid, pid_list); /* insert next pid from pid_list to hash */ hlist_add_head(&pid_next->hash_list, &pid_hash[type][pid_hashfn(pid_next->nr)]); @@ -218,11 +218,11 @@ task_t *find_task_by_pid_type(int type, int nr) { - struct pid_struct *pid = find_pid(type, nr); + struct pid *pid = find_pid(type, nr); - if (!pid) - return NULL; - return pid_task(&pid->pid_list, type); + if (pid) + return pid_task(&pid->pid_list, type); + return NULL; } EXPORT_SYMBOL(find_task_by_pid_type); Index: kirill-2.6.9-rc1-mm2/include/linux/sched.h =================================================================== --- kirill-2.6.9-rc1-mm2.orig/include/linux/sched.h 2004-09-01 08:44:05.775683632 -0700 +++ kirill-2.6.9-rc1-mm2/include/linux/sched.h 2004-09-01 09:28:56.542624880 -0700 @@ -503,7 +503,7 @@ struct task_struct *group_leader; /* threadgroup leader */ /* PID/PID hash table linkage. */ - struct pid_struct pids[PIDTYPE_MAX]; + struct pid pids[PIDTYPE_MAX]; wait_queue_head_t wait_chldexit; /* for wait4() */ struct completion *vfork_done; /* for vfork() */ Index: kirill-2.6.9-rc1-mm2/include/linux/pid.h =================================================================== --- kirill-2.6.9-rc1-mm2.orig/include/linux/pid.h 2004-09-01 09:12:08.394886632 -0700 +++ kirill-2.6.9-rc1-mm2/include/linux/pid.h 2004-09-01 09:28:48.595832976 -0700 @@ -10,7 +10,7 @@ PIDTYPE_MAX }; -struct pid_struct +struct pid { /* Try to keep hash_list in the same cacheline as nr for find_pid */ int nr; @@ -34,7 +34,7 @@ * look up a PID in the hash table. Must be called with the tasklist_lock * held. */ -extern struct pid_struct *FASTCALL(find_pid(enum pid_type, int)); +struct pid *FASTCALL(find_pid(enum pid_type, int)); extern int alloc_pidmap(void); extern void FASTCALL(free_pidmap(int)); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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