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Message-ID: <2072685.XptgVkyDqn@devpool47>
Date: Thu, 18 Feb 2021 13:37:11 +0100
From: Rolf Eike Beer <eb@...ix.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH] simplify copy_mm()
All this can happen without a single goto.
Signed-off-by: Rolf Eike Beer <eb@...ix.com>
---
kernel/fork.c | 15 ++++-----------
1 file changed, 4 insertions(+), 11 deletions(-)
diff --git a/kernel/fork.c b/kernel/fork.c
index d66cd1014211..1cad8c622b34 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1382,7 +1382,6 @@ static struct mm_struct *dup_mm(struct task_struct *tsk,
static int copy_mm(unsigned long clone_flags, struct task_struct *tsk)
{
struct mm_struct *mm, *oldmm;
- int retval;
tsk->min_flt = tsk->maj_flt = 0;
tsk->nvcsw = tsk->nivcsw = 0;
@@ -1409,21 +1408,15 @@ static int copy_mm(unsigned long clone_flags, struct task_struct *tsk)
if (clone_flags & CLONE_VM) {
mmget(oldmm);
mm = oldmm;
- goto good_mm;
+ } else {
+ mm = dup_mm(tsk, current->mm);
+ if (!mm)
+ return -ENOMEM;
}
- retval = -ENOMEM;
- mm = dup_mm(tsk, current->mm);
- if (!mm)
- goto fail_nomem;
-
-good_mm:
tsk->mm = mm;
tsk->active_mm = mm;
return 0;
-
-fail_nomem:
- return retval;
}
static int copy_fs(unsigned long clone_flags, struct task_struct *tsk)
--
2.30.0
--
Rolf Eike Beer, emlix GmbH, http://www.emlix.com
Fon +49 551 30664-0, Fax +49 551 30664-11
Gothaer Platz 3, 37083 Göttingen, Germany
Sitz der Gesellschaft: Göttingen, Amtsgericht Göttingen HR B 3160
Geschäftsführung: Heike Jordan, Dr. Uwe Kracke – Ust-IdNr.: DE 205 198 055
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