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authorBaolin Wang <baolin.wang@linux.alibaba.com>2021-09-08 15:18:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-08 15:32:34 -0700
commit2b9b624f5aef6af608edf541fed973948e27004c (patch)
tree3fc74f497d41fbd6be1d776200d3432d07fc4a8b /mm/migrate.c
parentc68ed7945701a38f2121ed74e23ff19c2052b4c2 (diff)
mm: migrate: introduce a local variable to get the number of pages
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>
Diffstat (limited to 'mm/migrate.c')
-rw-r--r--mm/migrate.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/mm/migrate.c b/mm/migrate.c
index a0aeb3fe46a7..d6617f8e546d 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -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