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From: Oren Laadan on 17 Mar 2010 12:40
From: Sukadev Bhattiprolu <sukadev(a)linux.vnet.ibm.com>

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

Signed-off-by: Sukadev Bhattiprolu <sukadev(a)linux.vnet.ibm.com>
Acked-by: Serge E. Hallyn <serue(a)us.ibm.com>
Tested-by: Serge E. Hallyn <serue(a)us.ibm.com>
Reviewed-by: Oren Laadan <orenl(a)cs.columbia.edu>
---
kernel/fork.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/kernel/fork.c b/kernel/fork.c
index 2e10cb8..737bca9 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -980,12 +980,12 @@ static struct task_struct *copy_process(unsigned long clone_flags,
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);
@@ -1359,7 +1359,7 @@ struct task_struct * __cpuinit fork_idle(int cpu)
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);

@@ -1382,6 +1382,7 @@ 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
@@ -1422,7 +1423,7 @@ 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.
--
1.6.3.3

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