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mm/compaction: use correct list in move_freelist_{head}/{tail} 

Patch series "Fixes and cleanups to compaction", v3.

This is a series to do fix and clean up to compaction.
Patch 1-2 fix and clean up freepage list operation.
Patch 3-4 fix and clean up isolation of freepages
Patch 7 factor code to check if compaction is needed for allocation order.

More details can be found in respective patches. 


This patch (of 6):

The freepage is chained with buddy_list in freelist head. Use buddy_list
instead of lru to correct the list operation.

Link: https://lkml.kernel.org/r/20230901155141.249860-1-shikemeng@huaweicloud.com
Link: https://lkml.kernel.org/r/20230901155141.249860-2-shikemeng@huaweicloud.com
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kemeng Shi 2023-09-01 23:51:36 +08:00 committed by Andrew Morton
parent 8a749fd1a8
commit bbefa0fc04
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
mm/compaction.c
View File

@ -1395,8 +1395,8 @@ move_freelist_head(struct list_head *freelist, struct page *freepage)
{
LIST_HEAD(sublist);
if (!list_is_last(freelist, &freepage->lru)) {
list_cut_before(&sublist, freelist, &freepage->lru);
if (!list_is_last(freelist, &freepage->buddy_list)) {
list_cut_before(&sublist, freelist, &freepage->buddy_list);
list_splice_tail(&sublist, freelist);
}
}
@ -1412,8 +1412,8 @@ move_freelist_tail(struct list_head *freelist, struct page *freepage)
{
LIST_HEAD(sublist);
if (!list_is_first(freelist, &freepage->lru)) {
list_cut_position(&sublist, freelist, &freepage->lru);
if (!list_is_first(freelist, &freepage->buddy_list)) {
list_cut_position(&sublist, freelist, &freepage->buddy_list);
list_splice_tail(&sublist, freelist);
}
}