linux-kernel - [PATCH v2 6/7] ksm: convert ksm_mm_slot.link to ksm_mm

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Message-Id: <20220831031951.43152-7-zhengqi.arch@bytedance.com>
Date:   Wed, 31 Aug 2022 11:19:50 +0800
From:   Qi Zheng <zhengqi.arch@...edance.com>
To:     akpm@...ux-foundation.org, shy828301@...il.com,
        willy@...radead.org, vbabka@...e.cz, hannes@...xchg.org,
        minchan@...nel.org, rppt@...nel.org
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Qi Zheng <zhengqi.arch@...edance.com>
Subject: [PATCH v2 6/7] ksm: convert ksm_mm_slot.link to ksm_mm_slot.hash

In order to use common struct mm_slot, convert ksm_mm_slot.link
to ksm_mm_slot.hash in advance, no functional change.

Signed-off-by: Qi Zheng <zhengqi.arch@...edance.com>
---
 mm/ksm.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/mm/ksm.c b/mm/ksm.c
index 8c52aa7e0a02..667efca75b0d 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -113,13 +113,13 @@
 
 /**
  * struct ksm_mm_slot - ksm information per mm that is being scanned
- * @link: link to the mm_slots hash list
+ * @hash: link to the mm_slots hash list
  * @mm_node: link into the mm_slots list, rooted in ksm_mm_head
  * @rmap_list: head for this mm_slot's singly-linked list of rmap_items
  * @mm: the mm that this information is valid for
  */
 struct ksm_mm_slot {
-	struct hlist_node link;
+	struct hlist_node hash;
 	struct list_head mm_node;
 	struct ksm_rmap_item *rmap_list;
 	struct mm_struct *mm;
@@ -424,7 +424,7 @@ static struct ksm_mm_slot *get_mm_slot(struct mm_struct *mm)
 {
 	struct ksm_mm_slot *slot;
 
-	hash_for_each_possible(mm_slots_hash, slot, link, (unsigned long)mm)
+	hash_for_each_possible(mm_slots_hash, slot, hash, (unsigned long)mm)
 		if (slot->mm == mm)
 			return slot;
 
@@ -435,7 +435,7 @@ static void insert_to_mm_slots_hash(struct mm_struct *mm,
 				    struct ksm_mm_slot *mm_slot)
 {
 	mm_slot->mm = mm;
-	hash_add(mm_slots_hash, &mm_slot->link, (unsigned long)mm);
+	hash_add(mm_slots_hash, &mm_slot->hash, (unsigned long)mm);
 }
 
 /*
@@ -1008,7 +1008,7 @@ static int unmerge_and_remove_all_rmap_items(void)
 		ksm_scan.mm_slot = list_entry(mm_slot->mm_node.next,
 						struct ksm_mm_slot, mm_node);
 		if (ksm_test_exit(mm)) {
-			hash_del(&mm_slot->link);
+			hash_del(&mm_slot->hash);
 			list_del(&mm_slot->mm_node);
 			spin_unlock(&ksm_mmlist_lock);
 
@@ -2376,7 +2376,7 @@ static struct ksm_rmap_item *scan_get_next_rmap_item(struct page **page)
 		 * or when all VM_MERGEABLE areas have been unmapped (and
 		 * mmap_lock then protects against race with MADV_MERGEABLE).
 		 */
-		hash_del(&slot->link);
+		hash_del(&slot->hash);
 		list_del(&slot->mm_node);
 		spin_unlock(&ksm_mmlist_lock);
 
@@ -2570,7 +2570,7 @@ void __ksm_exit(struct mm_struct *mm)
 	mm_slot = get_mm_slot(mm);
 	if (mm_slot && ksm_scan.mm_slot != mm_slot) {
 		if (!mm_slot->rmap_list) {
-			hash_del(&mm_slot->link);
+			hash_del(&mm_slot->hash);
 			list_del(&mm_slot->mm_node);
 			easy_to_free = 1;
 		} else {
-- 
2.20.1