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| author | Daeseok Youn <daeseok.youn@gmail.com> | 2014-01-23 15:55:48 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-23 16:37:02 -0800 |
| commit | 68ce670b6e8edc30551862e7f6a306e45389e189 (patch) | |
| tree | 6d11b7ba37a902af3640da2eeb7e1ab701e607ec /kernel/fork.c | |
| parent | 5d59e18270d4769c9160c282b25c00b6fc004ffb (diff) | |
| download | lwn-68ce670b6e8edc30551862e7f6a306e45389e189.tar.gz lwn-68ce670b6e8edc30551862e7f6a306e45389e189.zip | |
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>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 3 |
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; |