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| author | Baolin Wang <baolin.wang@linux.alibaba.com> | 2021-09-09 00:18:01 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-09 00:32:34 +0200 |
| commit | 2b9b624f5aef6af608edf541fed973948e27004c (patch) | |
| tree | 3fc74f497d41fbd6be1d776200d3432d07fc4a8b | |
| parent | mm/vmstat: protect per cpu variables with preempt disable on RT (diff) | |
| download | linux-2b9b624f5aef6af608edf541fed973948e27004c.tar.xz linux-2b9b624f5aef6af608edf541fed973948e27004c.zip | |
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>
| -rw-r--r-- | mm/migrate.c | 5 |
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 |