The patch titled
lumpy: introduce HIGH_ORDER delineating easily reclaimable orders cleanups
has been added to the -mm tree. Its filename is
introduce-high_order-delineating-easily-reclaimable-orders-cleanups.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: lumpy: introduce HIGH_ORDER delineating easily reclaimable orders cleanups
From: Andy Whitcroft <apw@xxxxxxxxxxxx>
Switch from HIGH_ORDER to the more logical and descriptive
PAGE_ALLOC_COSTLY_ORDER indicating the boundary between orders easily
reclaimed and allocated and those which are not.
Signed-off-by: Andy Whitcroft <apw@xxxxxxxxxxxx>
Acked-by: Mel Gorman <mel@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mmzone.h | 9 +++++----
mm/page_alloc.c | 3 ++-
mm/vmscan.c | 7 ++++---
3 files changed, 11 insertions(+), 8 deletions(-)
diff -puN include/linux/mmzone.h~introduce-high_order-delineating-easily-reclaimable-orders-cleanups include/linux/mmzone.h
--- a/include/linux/mmzone.h~introduce-high_order-delineating-easily-reclaimable-orders-cleanups
+++ a/include/linux/mmzone.h
@@ -26,11 +26,12 @@
#define MAX_ORDER_NR_PAGES (1 << (MAX_ORDER - 1))
/*
- * The boundary between small and large allocations. That is between
- * allocation orders which should colesce naturally under reasonable
- * reclaim pressure and those which will not.
+ * PAGE_ALLOC_COSTLY_ORDER is the order at which allocations are deemed
+ * costly to service. That is between allocation orders which should
+ * coelesce naturally under reasonable reclaim pressure and those which
+ * will not.
*/
-#define HIGH_ORDER 3
+#define PAGE_ALLOC_COSTLY_ORDER 3
#ifdef CONFIG_PAGE_GROUP_BY_MOBILITY
#define MIGRATE_UNMOVABLE 0
diff -puN mm/page_alloc.c~introduce-high_order-delineating-easily-reclaimable-orders-cleanups mm/page_alloc.c
--- a/mm/page_alloc.c~introduce-high_order-delineating-easily-reclaimable-orders-cleanups
+++ a/mm/page_alloc.c
@@ -1677,7 +1677,8 @@ nofail_alloc:
*/
do_retry = 0;
if (!(gfp_mask & __GFP_NORETRY)) {
- if ((order <= HIGH_ORDER) || (gfp_mask & __GFP_REPEAT))
+ if ((order <= PAGE_ALLOC_COSTLY_ORDER) ||
+ (gfp_mask & __GFP_REPEAT))
do_retry = 1;
if (gfp_mask & __GFP_NOFAIL)
do_retry = 1;
diff -puN mm/vmscan.c~introduce-high_order-delineating-easily-reclaimable-orders-cleanups mm/vmscan.c
--- a/mm/vmscan.c~introduce-high_order-delineating-easily-reclaimable-orders-cleanups
+++ a/mm/vmscan.c
@@ -487,7 +487,7 @@ static unsigned long shrink_page_list(st
referenced = page_referenced(page, 1);
/* In active use or really unfreeable? Activate it. */
- if (sc->order <= HIGH_ORDER &&
+ if (sc->order <= PAGE_ALLOC_COSTLY_ORDER &&
referenced && page_mapping_inuse(page))
goto activate_locked;
@@ -521,7 +521,7 @@ static unsigned long shrink_page_list(st
}
if (PageDirty(page)) {
- if (sc->order <= HIGH_ORDER && referenced)
+ if (sc->order <= PAGE_ALLOC_COSTLY_ORDER && referenced)
goto keep_locked;
if (!may_enter_fs)
goto keep_locked;
@@ -793,7 +793,8 @@ static unsigned long shrink_inactive_lis
nr_taken = isolate_lru_pages(sc->swap_cluster_max,
&zone->inactive_list,
&page_list, &nr_scan, sc->order,
- (sc->order > HIGH_ORDER)? ISOLATE_BOTH : 0);
+ (sc->order > PAGE_ALLOC_COSTLY_ORDER)?
+ ISOLATE_BOTH : 0);
nr_active = deactivate_pages(&page_list);
__mod_zone_page_state(zone, NR_ACTIVE, -nr_active);
_
Patches currently in -mm which might be from apw@xxxxxxxxxxxx are
pci-device-ensure-sysdata-initialised-v2.patch
add-a-bitmap-that-is-used-to-track-flags-affecting-a-block-of-pages-fix.patch
add-a-configure-option-to-group-pages-by-mobility-speedup.patch
move-free-pages-between-lists-on-steal-fix.patch
do-not-group-pages-by-mobility-type-on-low-memory-systems.patch
fix-corruption-of-memmap-on-ia64-sparsemem-when-mem_section-is-not-a-power-of-2.patch
create-the-zone_movable-zone-align-zone_movable-to-a-max_order_nr_pages-boundary.patch
handle-kernelcore=-boot-parameter-in-common-code-to-avoid-boot-problem-on-ia64.patch
lumpy-reclaim-v4.patch
lumpy-back-out-removal-of-active-check-in-isolate_lru_pages.patch
lumpy-only-count-taken-pages-as-scanned.patch
kswapd-use-reclaim-order-in-background-reclaim.patch
lumpy-increase-pressure-at-the-end-of-the-inactive-list.patch
introduce-high_order-delineating-easily-reclaimable-orders.patch
introduce-high_order-delineating-easily-reclaimable-orders-cleanups.patch
add-pfn_valid_within-helper-for-sub-max_order-hole-detection.patch
anti-fragmentation-switch-over-to-pfn_valid_within.patch
lumpy-move-to-using-pfn_valid_within.patch
bias-the-location-of-pages-freed-for-min_free_kbytes-in-the-same-max_order_nr_pages-blocks.patch
bias-the-location-of-pages-freed-for-min_free_kbytes-in-the-same-max_order_nr_pages-blocks-tidy.patch
bias-the-location-of-pages-freed-for-min_free_kbytes-in-the-same-max_order_nr_pages-blocks-tidy-fix.patch
remove-page_group_by_mobility.patch
dont-group-high-order-atomic-allocations.patch
slab-numa-kmem_cache-diet.patch
sched-implement-staircase-deadline-cpu-scheduler-misc-fixes.patch
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