From 23f746e412b405fbd6fb9652c0f7c33818713c43 Mon Sep 17 00:00:00 2001 From: Qi Zheng Date: Wed, 31 Aug 2022 11:19:49 +0800 Subject: ksm: convert ksm_mm_slot.mm_list to ksm_mm_slot.mm_node In order to use common struct mm_slot, convert ksm_mm_slot.mm_list to ksm_mm_slot.mm_node in advance, no functional change. Link: https://lkml.kernel.org/r/20220831031951.43152-6-zhengqi.arch@bytedance.com Signed-off-by: Qi Zheng Cc: Johannes Weiner Cc: Matthew Wilcox Cc: Mike Rapoport Cc: Minchan Kim Cc: Vlastimil Babka Cc: Yang Shi Signed-off-by: Andrew Morton --- mm/ksm.c | 40 ++++++++++++++++++++-------------------- 1 file changed, 20 insertions(+), 20 deletions(-) (limited to 'mm/ksm.c') diff --git a/mm/ksm.c b/mm/ksm.c index de61946106ce..f9cd502233f0 100644 --- a/mm/ksm.c +++ b/mm/ksm.c @@ -114,13 +114,13 @@ /** * struct ksm_mm_slot - ksm information per mm that is being scanned * @link: link to the mm_slots hash list - * @mm_list: link into the mm_slots list, rooted in ksm_mm_head + * @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 list_head mm_list; + struct list_head mm_node; struct ksm_rmap_item *rmap_list; struct mm_struct *mm; }; @@ -231,7 +231,7 @@ static LIST_HEAD(migrate_nodes); static DEFINE_HASHTABLE(mm_slots_hash, MM_SLOTS_HASH_BITS); static struct ksm_mm_slot ksm_mm_head = { - .mm_list = LIST_HEAD_INIT(ksm_mm_head.mm_list), + .mm_node = LIST_HEAD_INIT(ksm_mm_head.mm_node), }; static struct ksm_scan ksm_scan = { .mm_slot = &ksm_mm_head, @@ -981,8 +981,8 @@ static int unmerge_and_remove_all_rmap_items(void) int err = 0; spin_lock(&ksm_mmlist_lock); - ksm_scan.mm_slot = list_entry(ksm_mm_head.mm_list.next, - struct ksm_mm_slot, mm_list); + ksm_scan.mm_slot = list_entry(ksm_mm_head.mm_node.next, + struct ksm_mm_slot, mm_node); spin_unlock(&ksm_mmlist_lock); for (mm_slot = ksm_scan.mm_slot; mm_slot != &ksm_mm_head; @@ -1006,11 +1006,11 @@ static int unmerge_and_remove_all_rmap_items(void) mmap_read_unlock(mm); spin_lock(&ksm_mmlist_lock); - ksm_scan.mm_slot = list_entry(mm_slot->mm_list.next, - struct ksm_mm_slot, mm_list); + 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); - list_del(&mm_slot->mm_list); + list_del(&mm_slot->mm_node); spin_unlock(&ksm_mmlist_lock); free_mm_slot(mm_slot); @@ -2253,7 +2253,7 @@ static struct ksm_rmap_item *scan_get_next_rmap_item(struct page **page) struct vma_iterator vmi; int nid; - if (list_empty(&ksm_mm_head.mm_list)) + if (list_empty(&ksm_mm_head.mm_node)) return NULL; slot = ksm_scan.mm_slot; @@ -2294,7 +2294,7 @@ static struct ksm_rmap_item *scan_get_next_rmap_item(struct page **page) root_unstable_tree[nid] = RB_ROOT; spin_lock(&ksm_mmlist_lock); - slot = list_entry(slot->mm_list.next, struct ksm_mm_slot, mm_list); + slot = list_entry(slot->mm_node.next, struct ksm_mm_slot, mm_node); ksm_scan.mm_slot = slot; spin_unlock(&ksm_mmlist_lock); /* @@ -2367,8 +2367,8 @@ no_vmas: remove_trailing_rmap_items(ksm_scan.rmap_list); spin_lock(&ksm_mmlist_lock); - ksm_scan.mm_slot = list_entry(slot->mm_list.next, - struct ksm_mm_slot, mm_list); + ksm_scan.mm_slot = list_entry(slot->mm_node.next, + struct ksm_mm_slot, mm_node); if (ksm_scan.address == 0) { /* * We've completed a full scan of all vmas, holding mmap_lock @@ -2380,7 +2380,7 @@ no_vmas: * mmap_lock then protects against race with MADV_MERGEABLE). */ hash_del(&slot->link); - list_del(&slot->mm_list); + list_del(&slot->mm_node); spin_unlock(&ksm_mmlist_lock); free_mm_slot(slot); @@ -2429,7 +2429,7 @@ static void ksm_do_scan(unsigned int scan_npages) static int ksmd_should_run(void) { - return (ksm_run & KSM_RUN_MERGE) && !list_empty(&ksm_mm_head.mm_list); + return (ksm_run & KSM_RUN_MERGE) && !list_empty(&ksm_mm_head.mm_node); } static int ksm_scan_thread(void *nothing) @@ -2526,7 +2526,7 @@ int __ksm_enter(struct mm_struct *mm) return -ENOMEM; /* Check ksm_run too? Would need tighter locking */ - needs_wakeup = list_empty(&ksm_mm_head.mm_list); + needs_wakeup = list_empty(&ksm_mm_head.mm_node); spin_lock(&ksm_mmlist_lock); insert_to_mm_slots_hash(mm, mm_slot); @@ -2541,9 +2541,9 @@ int __ksm_enter(struct mm_struct *mm) * 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); + list_add_tail(&mm_slot->mm_node, &ksm_mm_head.mm_node); else - list_add_tail(&mm_slot->mm_list, &ksm_scan.mm_slot->mm_list); + list_add_tail(&mm_slot->mm_node, &ksm_scan.mm_slot->mm_node); spin_unlock(&ksm_mmlist_lock); set_bit(MMF_VM_MERGEABLE, &mm->flags); @@ -2574,11 +2574,11 @@ void __ksm_exit(struct mm_struct *mm) if (mm_slot && ksm_scan.mm_slot != mm_slot) { if (!mm_slot->rmap_list) { hash_del(&mm_slot->link); - list_del(&mm_slot->mm_list); + list_del(&mm_slot->mm_node); easy_to_free = 1; } else { - list_move(&mm_slot->mm_list, - &ksm_scan.mm_slot->mm_list); + list_move(&mm_slot->mm_node, + &ksm_scan.mm_slot->mm_node); } } spin_unlock(&ksm_mmlist_lock); -- cgit v1.2.3-58-ga151