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mm: compaction: use the correct type of list for free pages 

JIRA: https://issues.redhat.com/browse/RHEL-27743

This patch is a backport of the following upstream commit:
commit 94ec20035b05f842dc08277a5a90fba757088f39
Author: Baolin Wang <baolin.wang@linux.alibaba.com>
Date:   Fri Jul 7 16:51:46 2023 +0800

    mm: compaction: use the correct type of list for free pages

    Use the page->buddy_list instead of page->lru to clarify the correct type
    of list for free pages.

    Link: https://lkml.kernel.org/r/b21cd8e2e32b9a1d9bc9e43ebf8acaf35e87f8df.1688715750.git.baolin.wang@linux.alibaba.com
    Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
    Acked-by: David Hildenbrand <david@redhat.com>
    Cc: Huang, Ying <ying.huang@intel.com>
    Cc: Mel Gorman <mgorman@techsingularity.net>
    Cc: Vlastimil Babka <vbabka@suse.cz>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Signed-off-by: Rafael Aquini <raquini@redhat.com>
This commit is contained in:
Rafael Aquini 2024-09-27 10:44:44 -04:00
parent f5f98e718c
commit d07ff5f921
1 changed files with 2 additions and 2 deletions
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4
mm/compaction.c
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@ -1520,7 +1520,7 @@ static void fast_isolate_freepages(struct compact_control *cc)
spin_lock_irqsave(&cc->zone->lock, flags);
freelist = &area->free_list[MIGRATE_MOVABLE];
list_for_each_entry_reverse(freepage, freelist, lru) {
list_for_each_entry_reverse(freepage, freelist, buddy_list) {
unsigned long pfn;
order_scanned++;
@ -1903,7 +1903,7 @@ static unsigned long fast_find_migrateblock(struct compact_control *cc)
spin_lock_irqsave(&cc->zone->lock, flags);
freelist = &area->free_list[MIGRATE_MOVABLE];
list_for_each_entry(freepage, freelist, lru) {
list_for_each_entry(freepage, freelist, buddy_list) {
unsigned long free_pfn;
if (nr_scanned++ >= limit) {