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authorDaeseok Youn <daeseok.youn@gmail.com>2014-01-23 15:55:48 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-23 16:37:02 -0800
commit68ce670b6e8edc30551862e7f6a306e45389e189 (patch)
tree6d11b7ba37a902af3640da2eeb7e1ab701e607ec
parent5d59e18270d4769c9160c282b25c00b6fc004ffb (diff)
kernel/fork.c: remove redundant NULL check in dup_mm()
current->mm doesn't need a NULL check in dup_mm(). Becasue dup_mm() is used only in copy_mm() and current->mm is checked whether it is NULL or not in copy_mm() before calling dup_mm(). Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com> Acked-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--kernel/fork.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index 01ccc6109918..b6dd0bbf4240 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -805,9 +805,6 @@ static struct mm_struct *dup_mm(struct task_struct *tsk)
struct mm_struct *mm, *oldmm = current->mm;
int err;
- if (!oldmm)
- return NULL;
-
mm = allocate_mm();
if (!mm)
goto fail_nomem;

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