Messages in this thread Patch in this message | | | From | "Pradeep Goswami (Pradeep Kumar Goswami)" <> | Subject | [PATCH]mm:Correctly update number of rotated pages on active list. | Date | Thu, 3 Dec 2015 10:08:11 +0000 |
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This patch corrects the number of pages which are rotated on active list. The counter for rotated pages effects the number of pages to be scanned on active pages list in low memory situations.
Signed-off-by: Pradeep Goswami <pradeep.goswami@spredtrum.com> Cc: Rebecca Schultz Zavin <rebecca@android.com> Cc: Vladimir Davydov <vdavydov@parallels.com> Cc: Andrew Morton <akpm@linux-foundation.org> --- --- a/mm/vmscan.c 2015-11-18 20:55:38.208838142 +0800 +++ b/mm/vmscan.c 2015-11-19 14:37:31.189838998 +0800 @@ -1806,7 +1806,6 @@ static void shrink_active_list(unsigned if (page_referenced(page, 0, sc->target_mem_cgroup, &vm_flags)) { - nr_rotated += hpage_nr_pages(page); /* * Identify referenced, file-backed active pages and * give them one more trip around the active list. So @@ -1818,6 +1817,7 @@ static void shrink_active_list(unsigned */ if ((vm_flags & VM_EXEC) && page_is_file_cache(page)) { list_add(&page->lru, &l_active); + nr_rotated += hpage_nr_pages(page); continue; } } Thanks, Pradeep.
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