The patch titled Subject: mm/page_idle: no unlikely double check for idle page counting has been removed from the -mm tree. Its filename was mm-page_idle-no-unlikely-double-check-for-idle-page-counting.patch This patch was dropped because it had testing failures ------------------------------------------------------ From: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx> Subject: mm/page_idle: no unlikely double check for idle page counting As func comments mentioned, few isolated page missing be tolerated. So why not do further to drop the unlikely double check. That won't cause more idle pages, but reduce a lock contention. This is also a preparation for later new page isolation feature. Link: http://lkml.kernel.org/r/1583146830-169516-4-git-send-email-alex.shi@xxxxxxxxxxxxxxxxx Signed-off-by: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx> Cc: Hugh Dickins <hughd@xxxxxxxxxx> Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx> Cc: Daniel Jordan <daniel.m.jordan@xxxxxxxxxx> Cc: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx> Cc: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx> Cc: Michal Hocko <mhocko@xxxxxxxxxx> Cc: Mike Kravetz <kravetz@xxxxxxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx> Cc: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/page_idle.c | 8 -------- 1 file changed, 8 deletions(-) --- a/mm/page_idle.c~mm-page_idle-no-unlikely-double-check-for-idle-page-counting +++ a/mm/page_idle.c @@ -31,7 +31,6 @@ static struct page *page_idle_get_page(unsigned long pfn) { struct page *page; - pg_data_t *pgdat; if (!pfn_valid(pfn)) return NULL; @@ -41,13 +40,6 @@ static struct page *page_idle_get_page(u !get_page_unless_zero(page)) return NULL; - pgdat = page_pgdat(page); - spin_lock_irq(&pgdat->lru_lock); - if (unlikely(!PageLRU(page))) { - put_page(page); - page = NULL; - } - spin_unlock_irq(&pgdat->lru_lock); return page; } _ Patches currently in -mm which might be from alex.shi@xxxxxxxxxxxxxxxxx are ocfs2-remove-fs_ocfs2_nm.patch ocfs2-remove-unused-macros.patch ocfs2-use-ocfs2_sec_bits-in-macro.patch ocfs2-remove-dlm_lock_is_remote.patch ocfs2-remove-useless-err.patch mm-thp-move-lru_add_page_tail-func-to-huge_memoryc.patch mm-thp-clean-up-lru_add_page_tail.patch mm-thp-narrow-lru-locking.patch