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authorAl Viro <viro@zeniv.linux.org.uk>2012-10-17 08:26:48 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2012-11-29 03:49:03 +0100
commit8cddebd767c5059257022cfbc2ac53fd81c09c94 (patch)
treedd8339b29ab65d56526239f6e010f833656984e3 /arch
parentkill daemonize() (diff)
downloadlinux-8cddebd767c5059257022cfbc2ac53fd81c09c94.tar.xz
linux-8cddebd767c5059257022cfbc2ac53fd81c09c94.zip
um: don't bother with passing sp to do_fork() for fork(2)/vfork(2)
copy_thread() on um will do the right thing when getting 0 for sp... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/um/kernel/syscall.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c
index a81f3705e90f..3a875226c8ef 100644
--- a/arch/um/kernel/syscall.c
+++ b/arch/um/kernel/syscall.c
@@ -16,23 +16,19 @@
long sys_fork(void)
{
- return do_fork(SIGCHLD, UPT_SP(&current->thread.regs.regs),
+ return do_fork(SIGCHLD, 0,
&current->thread.regs, 0, NULL, NULL);
}
long sys_vfork(void)
{
- return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD,
- UPT_SP(&current->thread.regs.regs),
+ return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0,
&current->thread.regs, 0, NULL, NULL);
}
long sys_clone(unsigned long clone_flags, unsigned long newsp,
void __user *parent_tid, void __user *child_tid)
{
- if (!newsp)
- newsp = UPT_SP(&current->thread.regs.regs);
-
return do_fork(clone_flags, newsp, &current->thread.regs, 0, parent_tid,
child_tid);
}