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mm: migrate: introduce a local variable to get the number of pages

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Use thp_nr_pages() instead of compound_nr() to get the number of pages for
THP page, meanwhile introducing a local variable 'nr_pages' to avoid
getting the number of pages repeatedly.

Link: https://lkml.kernel.org/r/a8e331ac04392ee230c79186330fb05e86a2aa77.1629447552.git.baolin.wang@linux.alibaba.com
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Baolin Wang 2021-09-08 15:18:01 -07:00 committed by Linus Torvalds
parent c68ed79457
commit 2b9b624f5a
1 changed files with 3 additions and 2 deletions
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5
mm/migrate.c
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@ -2107,6 +2107,7 @@ out:
static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page)
{
int page_lru;
int nr_pages = thp_nr_pages(page);
VM_BUG_ON_PAGE(compound_order(page) && !PageTransHuge(page), page);
@ -2115,7 +2116,7 @@ static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page)
return 0;
/* Avoid migrating to a node that is nearly full */
if (!migrate_balanced_pgdat(pgdat, compound_nr(page)))
if (!migrate_balanced_pgdat(pgdat, nr_pages))
return 0;
if (isolate_lru_page(page))
@ -2123,7 +2124,7 @@ static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page)
page_lru = page_is_file_lru(page);
mod_node_page_state(page_pgdat(page), NR_ISOLATED_ANON + page_lru,
thp_nr_pages(page));
nr_pages);
/*
* Isolating the page has taken another reference, so the