The patch titled mm: move pagevec stripping to save unlock-relock has been removed from the -mm tree. Its filename was mm-move-pagevec-stripping-to-save-unlock-relock.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: mm: move pagevec stripping to save unlock-relock From: Johannes Weiner <hannes@xxxxxxxxxxx> In shrink_active_list() after the deactivation loop, we strip buffer heads from the potentially remaining pages in the pagevec. Currently, this drops the zone's lru lock for stripping, only to reacquire it again afterwards to update statistics. It is not necessary to strip the pages before updating the stats, so move the whole thing out of the protected region and save the extra locking. Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx> Reviewed-by: MinChan Kim <minchan.kim@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/vmscan.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff -puN mm/vmscan.c~mm-move-pagevec-stripping-to-save-unlock-relock mm/vmscan.c --- a/mm/vmscan.c~mm-move-pagevec-stripping-to-save-unlock-relock +++ a/mm/vmscan.c @@ -1298,14 +1298,11 @@ static void shrink_active_list(unsigned } __mod_zone_page_state(zone, NR_LRU_BASE + lru, pgmoved); pgdeactivate += pgmoved; - if (buffer_heads_over_limit) { - spin_unlock_irq(&zone->lru_lock); - pagevec_strip(&pvec); - spin_lock_irq(&zone->lru_lock); - } __count_zone_vm_events(PGREFILL, zone, pgscanned); __count_vm_events(PGDEACTIVATE, pgdeactivate); spin_unlock_irq(&zone->lru_lock); + if (buffer_heads_over_limit) + pagevec_strip(&pvec); if (vm_swap_full()) pagevec_swap_free(&pvec); _ Patches currently in -mm which might be from hannes@xxxxxxxxxxx are origin.patch linux-next.patch cifs-use-kzfree.patch memcg-remove-mem_cgroup_calc_mapped_ratio-take2.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html