The patch titled vmscan: kill sc.swap_cluster_max has been added to the -mm tree. Its filename is vmscan-kill-scswap_cluster_max.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: vmscan: kill sc.swap_cluster_max From: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Now, All caller of reclaim use swap_cluster_max as SWAP_CLUSTER_MAX. Then, we can remove it perfectly. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Reviewed-by: Rik van Riel <riel@xxxxxxxxxx> Reviewed-by: Minchan Kim <minchan.kim@xxxxxxxxx> Cc: Mel Gorman <mel@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/vmscan.c | 26 ++++++-------------------- 1 file changed, 6 insertions(+), 20 deletions(-) diff -puN mm/vmscan.c~vmscan-kill-scswap_cluster_max mm/vmscan.c --- a/mm/vmscan.c~vmscan-kill-scswap_cluster_max +++ a/mm/vmscan.c @@ -71,12 +71,6 @@ struct scan_control { /* Can pages be swapped as part of reclaim? */ int may_swap; - /* This context's SWAP_CLUSTER_MAX. If freeing memory for - * suspend, we effectively ignore SWAP_CLUSTER_MAX. - * In this context, it doesn't matter that we scan the - * whole list at once. */ - int swap_cluster_max; - int swappiness; int all_unreclaimable; @@ -1137,7 +1131,7 @@ static unsigned long shrink_inactive_lis unsigned long nr_anon; unsigned long nr_file; - nr_taken = sc->isolate_pages(sc->swap_cluster_max, + nr_taken = sc->isolate_pages(SWAP_CLUSTER_MAX, &page_list, &nr_scan, sc->order, mode, zone, sc->mem_cgroup, 0, file); @@ -1576,15 +1570,14 @@ static void get_scan_ratio(struct zone * * until we collected @swap_cluster_max pages to scan. */ static unsigned long nr_scan_try_batch(unsigned long nr_to_scan, - unsigned long *nr_saved_scan, - unsigned long swap_cluster_max) + unsigned long *nr_saved_scan) { unsigned long nr; *nr_saved_scan += nr_to_scan; nr = *nr_saved_scan; - if (nr >= swap_cluster_max) + if (nr >= SWAP_CLUSTER_MAX) *nr_saved_scan = 0; else nr = 0; @@ -1603,7 +1596,6 @@ static void shrink_zone(int priority, st unsigned long percent[2]; /* anon @ 0; file @ 1 */ enum lru_list l; unsigned long nr_reclaimed = sc->nr_reclaimed; - unsigned long swap_cluster_max = sc->swap_cluster_max; unsigned long nr_to_reclaim = sc->nr_to_reclaim; struct zone_reclaim_stat *reclaim_stat = get_reclaim_stat(zone, sc); int noswap = 0; @@ -1626,15 +1618,15 @@ static void shrink_zone(int priority, st scan = (scan * percent[file]) / 100; } nr[l] = nr_scan_try_batch(scan, - &reclaim_stat->nr_saved_scan[l], - swap_cluster_max); + &reclaim_stat->nr_saved_scan[l]); } while (nr[LRU_INACTIVE_ANON] || nr[LRU_ACTIVE_FILE] || nr[LRU_INACTIVE_FILE]) { for_each_evictable_lru(l) { if (nr[l]) { - nr_to_scan = min(nr[l], swap_cluster_max); + nr_to_scan = min_t(unsigned long, + nr[l], SWAP_CLUSTER_MAX); nr[l] -= nr_to_scan; nr_reclaimed += shrink_list(l, nr_to_scan, @@ -1842,7 +1834,6 @@ unsigned long try_to_free_pages(struct z struct scan_control sc = { .gfp_mask = gfp_mask, .may_writepage = !laptop_mode, - .swap_cluster_max = SWAP_CLUSTER_MAX, .nr_to_reclaim = SWAP_CLUSTER_MAX, .may_unmap = 1, .may_swap = 1, @@ -1867,7 +1858,6 @@ unsigned long mem_cgroup_shrink_node_zon .may_writepage = !laptop_mode, .may_unmap = 1, .may_swap = !noswap, - .swap_cluster_max = SWAP_CLUSTER_MAX, .swappiness = swappiness, .order = 0, .mem_cgroup = mem, @@ -1901,7 +1891,6 @@ unsigned long try_to_free_mem_cgroup_pag .may_writepage = !laptop_mode, .may_unmap = 1, .may_swap = !noswap, - .swap_cluster_max = SWAP_CLUSTER_MAX, .nr_to_reclaim = SWAP_CLUSTER_MAX, .swappiness = swappiness, .order = 0, @@ -1967,7 +1956,6 @@ static unsigned long balance_pgdat(pg_da .gfp_mask = GFP_KERNEL, .may_unmap = 1, .may_swap = 1, - .swap_cluster_max = SWAP_CLUSTER_MAX, /* * kswapd doesn't want to be bailed out while reclaim. because * we want to put equal scanning pressure on each zone. @@ -2348,7 +2336,6 @@ unsigned long shrink_all_memory(unsigned .may_swap = 1, .may_unmap = 1, .may_writepage = 1, - .swap_cluster_max = SWAP_CLUSTER_MAX, .nr_to_reclaim = nr_to_reclaim, .hibernation_mode = 1, .swappiness = vm_swappiness, @@ -2533,7 +2520,6 @@ static int __zone_reclaim(struct zone *z .may_writepage = !!(zone_reclaim_mode & RECLAIM_WRITE), .may_unmap = !!(zone_reclaim_mode & RECLAIM_SWAP), .may_swap = 1, - .swap_cluster_max = SWAP_CLUSTER_MAX, .nr_to_reclaim = max_t(unsigned long, nr_pages, SWAP_CLUSTER_MAX), .gfp_mask = gfp_mask, _ Patches currently in -mm which might be from kosaki.motohiro@xxxxxxxxxxxxxx are origin.patch page-allocator-always-wake-kswapd-when-restarting-an-allocation-attempt-after-direct-reclaim-failed.patch page-allocator-do-not-allow-interrupts-to-use-alloc_harder.patch linux-next.patch oom-dump-stack-and-vm-state-when-oom-killer-panics.patch readahead-add-blk_run_backing_dev.patch mmap-dont-return-enomem-when-mapcount-is-temporarily-exceeded-in-munmap.patch mmap-dont-return-enomem-when-mapcount-is-temporarily-exceeded-in-munmap-checkpatch-fixes.patch mm-vsmcan-check-shrink_active_list-sc-isolate_pages-return-value.patch mm-move-inc_zone_page_statenr_isolated-to-just-isolated-place.patch rmap-simplify-try_to_unmap_file.patch oom_kill-use-rss-value-instead-of-vm-size-for-badness.patch oom-kill-show-virtual-size-and-rss-information-of-the-killed-process.patch oom-kill-show-virtual-size-and-rss-information-of-the-killed-process-fix.patch page-allocator-wait-on-both-sync-and-async-congestion-after-direct-reclaim.patch vmscan-have-kswapd-sleep-for-a-short-interval-and-double-check-it-should-be-asleep.patch vmscan-take-order-into-consideration-when-deciding-if-kswapd-is-in-trouble.patch mm-define-page_mapping_flags.patch mm-mlocking-in-try_to_unmap_one.patch mm-config_mmu-for-pg_mlocked.patch mm-pass-address-down-to-rmap-ones.patch mm-stop-ptlock-enlarging-struct-page.patch mm-sigbus-instead-of-abusing-oom.patch mm-add-numa-node-symlink-for-memory-section-in-sysfs.patch mm-refactor-register_cpu_under_node.patch mm-refactor-unregister_cpu_under_node.patch mm-add-numa-node-symlink-for-cpu-devices-in-sysfs.patch documentation-abi-sys-devices-system-cpu-cpu-node.patch vmscan-separate-scswap_cluster_max-and-scnr_max_reclaim.patch vmscan-kill-hibernation-specific-reclaim-logic-and-unify-it.patch vmscan-zone_reclaim-dont-use-insane-swap_cluster_max.patch vmscan-kill-scswap_cluster_max.patch vmscan-make-consistent-of-reclaim-bale-out-between-do_try_to_free_page-and-shrink_zone.patch lib-introduce-strim.patch fs-symlink-write_begin-allocation-context-fix-reiser4-fix.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