[Devel] [RFC][v7][PATCH 6/9]: Add target_pids parameter to copy_process()

[Sukadev Bhattiprolu]

Subject: [RFC][v7][PATCH 6/9]: Add target_pids parameter to copy_process()

Add a 'target_pids' parameter to copy_process().  The new parameter will be
used in a follow-on patch when clone_with_pids() is implemented.

Signed-off-by: Sukadev Bhattiprolu <suka...@linux.vnet.ibm.com>
Acked-by: Serge Hallyn <se...@us.ibm.com>
Reviewed-by: Oren Laadan <or...@cs.columbia.edu>
---
 kernel/fork.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

Index: linux-2.6/kernel/fork.c
===================================================================
--- linux-2.6.orig/kernel/fork.c        2009-09-10 10:29:10.000000000 -0700
+++ linux-2.6/kernel/fork.c     2009-09-10 10:29:13.000000000 -0700
@@ -935,12 +935,12 @@ static struct task_struct *copy_process(
                                        unsigned long stack_size,
                                        int __user *child_tidptr,
                                        struct pid *pid,
+                                       pid_t *target_pids,
                                        int trace)
 {
        int retval;
        struct task_struct *p;
        int cgroup_callbacks_done = 0;
-       pid_t *target_pids = NULL;
 
        if ((clone_flags & (CLONE_NEWNS|CLONE_FS)) == (CLONE_NEWNS|CLONE_FS))
                return ERR_PTR(-EINVAL);
@@ -1319,7 +1319,7 @@ struct task_struct * __cpuinit fork_idle
        struct pt_regs regs;
 
        task = copy_process(CLONE_VM, 0, idle_regs(&regs), 0, NULL,
-                           &init_struct_pid, 0);
+                           &init_struct_pid, NULL, 0);
        if (!IS_ERR(task))
                init_idle(task, cpu);
 
@@ -1342,6 +1342,7 @@ long do_fork(unsigned long clone_flags,
        struct task_struct *p;
        int trace = 0;
        long nr;
+       pid_t *target_pids = NULL;
 
        /*
         * Do some preliminary argument and permissions checking before we
@@ -1382,7 +1383,7 @@ long do_fork(unsigned long clone_flags,
                trace = tracehook_prepare_clone(clone_flags);
 
        p = copy_process(clone_flags, stack_start, regs, stack_size,
-                        child_tidptr, NULL, trace);
+                        child_tidptr, NULL, target_pids, trace);
        /*
         * Do this prior waking up the new thread - the thread pointer
         * might get invalid after that point, if the thread exits quickly.
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