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Subject[PATCH] mm/ksm: One function call less in __ksm_enter()
Date
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Fri, 5 Jul 2019 16:02:26 +0200

Avoid an extra function call by using a ternary operator instead of
a conditional statement.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
mm/ksm.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/ksm.c b/mm/ksm.c
index 3dc4346411e4..7934bab8ceae 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -2521,10 +2521,10 @@ int __ksm_enter(struct mm_struct *mm)
* scanning cursor, otherwise KSM pages in newly forked mms will be
* missed: then we might as well insert at the end of the list.
*/
- if (ksm_run & KSM_RUN_UNMERGE)
- list_add_tail(&mm_slot->mm_list, &ksm_mm_head.mm_list);
- else
- list_add_tail(&mm_slot->mm_list, &ksm_scan.mm_slot->mm_list);
+ list_add_tail(&mm_slot->mm_list,
+ ksm_run & KSM_RUN_UNMERGE
+ ? &ksm_mm_head.mm_list
+ : &ksm_scan.mm_slot->mm_list);
spin_unlock(&ksm_mmlist_lock);

set_bit(MMF_VM_MERGEABLE, &mm->flags);
--
2.22.0

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