The patch titled
Subject: mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated-fix3
has been added to the -mm tree. Its filename is
mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated-fix3.patch
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From: Mel Gorman <mgorman@xxxxxxx>
Subject: mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated-fix3
The following patch still has not been tested but I'm reposting it
anyway. I've sent a rebased patch on top of next-20121004 that includes
this patch privately to Thierry for testing.
CMA requires that the PG_migrate_skip hint be skipped but it was only
skipping it when isolating pages for migration, not for free. Ensure
cc->isolate_skip_hint gets passed in both cases.
This is a fix for
mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated-fix.patch
but is based on top of linux-next/akpm as of 20121004. It will cause
minor conflicts when it is slotted into place but the resolutions should
be straight-forward.
Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
Minchan Kim <minchan@xxxxxxxxxx>
To: Mel Gorman <mgorman@xxxxxxx>
Cc: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx>
Cc: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Cc: Michal Nazarewicz <mina86@xxxxxxxxxx>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Cc: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/compaction.c | 16 ++++------------
mm/internal.h | 3 ++-
mm/page_alloc.c | 39 ++++++++++++++++++++-------------------
3 files changed, 26 insertions(+), 32 deletions(-)
diff -puN mm/compaction.c~mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated-fix3 mm/compaction.c
--- a/mm/compaction.c~mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated-fix3
+++ a/mm/compaction.c
@@ -346,22 +346,14 @@ static unsigned long isolate_freepages_b
* a free page).
*/
unsigned long
-isolate_freepages_range(unsigned long start_pfn, unsigned long end_pfn)
+isolate_freepages_range(struct compact_control *cc,
+ unsigned long start_pfn, unsigned long end_pfn)
{
unsigned long isolated, pfn, block_end_pfn;
- struct zone *zone = NULL;
LIST_HEAD(freelist);
- /* cc needed for isolate_freepages_block to acquire zone->lock */
- struct compact_control cc = {
- .sync = true,
- };
-
- if (pfn_valid(start_pfn))
- cc.zone = zone = page_zone(pfn_to_page(start_pfn));
-
for (pfn = start_pfn; pfn < end_pfn; pfn += isolated) {
- if (!pfn_valid(pfn) || zone != page_zone(pfn_to_page(pfn)))
+ if (!pfn_valid(pfn) || cc->zone != page_zone(pfn_to_page(pfn)))
break;
/*
@@ -371,7 +363,7 @@ isolate_freepages_range(unsigned long st
block_end_pfn = ALIGN(pfn + 1, pageblock_nr_pages);
block_end_pfn = min(block_end_pfn, end_pfn);
- isolated = isolate_freepages_block(&cc, pfn, block_end_pfn,
+ isolated = isolate_freepages_block(cc, pfn, block_end_pfn,
&freelist, true);
/*
diff -puN mm/internal.h~mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated-fix3 mm/internal.h
--- a/mm/internal.h~mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated-fix3
+++ a/mm/internal.h
@@ -131,7 +131,8 @@ struct compact_control {
};
unsigned long
-isolate_freepages_range(unsigned long start_pfn, unsigned long end_pfn);
+isolate_freepages_range(struct compact_control *cc,
+ unsigned long start_pfn, unsigned long end_pfn);
unsigned long
isolate_migratepages_range(struct zone *zone, struct compact_control *cc,
unsigned long low_pfn, unsigned long end_pfn);
diff -puN mm/page_alloc.c~mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated-fix3 mm/page_alloc.c
--- a/mm/page_alloc.c~mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated-fix3
+++ a/mm/page_alloc.c
@@ -5678,7 +5678,8 @@ __alloc_contig_migrate_alloc(struct page
}
/* [start, end) must belong to a single zone. */
-static int __alloc_contig_migrate_range(unsigned long start, unsigned long end)
+static int __alloc_contig_migrate_range(struct compact_control *cc,
+ unsigned long start, unsigned long end)
{
/* This function is based on compact_zone() from compaction.c. */
@@ -5686,26 +5687,17 @@ static int __alloc_contig_migrate_range(
unsigned int tries = 0;
int ret = 0;
- struct compact_control cc = {
- .nr_migratepages = 0,
- .order = -1,
- .zone = page_zone(pfn_to_page(start)),
- .sync = true,
- .ignore_skip_hint = true,
- };
- INIT_LIST_HEAD(&cc.migratepages);
-
migrate_prep_local();
- while (pfn < end || !list_empty(&cc.migratepages)) {
+ while (pfn < end || !list_empty(&cc->migratepages)) {
if (fatal_signal_pending(current)) {
ret = -EINTR;
break;
}
- if (list_empty(&cc.migratepages)) {
- cc.nr_migratepages = 0;
- pfn = isolate_migratepages_range(cc.zone, &cc,
+ if (list_empty(&cc->migratepages)) {
+ cc->nr_migratepages = 0;
+ pfn = isolate_migratepages_range(cc->zone, cc,
pfn, end);
if (!pfn) {
ret = -EINTR;
@@ -5717,14 +5709,14 @@ static int __alloc_contig_migrate_range(
break;
}
- reclaim_clean_pages_from_list(cc.zone, &cc.migratepages);
+ reclaim_clean_pages_from_list(cc->zone, &cc->migratepages);
- ret = migrate_pages(&cc.migratepages,
+ ret = migrate_pages(&cc->migratepages,
__alloc_contig_migrate_alloc,
0, false, MIGRATE_SYNC);
}
- putback_lru_pages(&cc.migratepages);
+ putback_lru_pages(&cc->migratepages);
return ret > 0 ? 0 : ret;
}
@@ -5803,6 +5795,15 @@ int alloc_contig_range(unsigned long sta
unsigned long outer_start, outer_end;
int ret = 0, order;
+ struct compact_control cc = {
+ .nr_migratepages = 0,
+ .order = -1,
+ .zone = page_zone(pfn_to_page(start)),
+ .sync = true,
+ .ignore_skip_hint = true,
+ };
+ INIT_LIST_HEAD(&cc.migratepages);
+
/*
* What we do here is we mark all pageblocks in range as
* MIGRATE_ISOLATE. Because pageblock and max order pages may
@@ -5832,7 +5833,7 @@ int alloc_contig_range(unsigned long sta
if (ret)
goto done;
- ret = __alloc_contig_migrate_range(start, end);
+ ret = __alloc_contig_migrate_range(&cc, start, end);
if (ret)
goto done;
@@ -5881,7 +5882,7 @@ int alloc_contig_range(unsigned long sta
__reclaim_pages(zone, GFP_HIGHUSER_MOVABLE, end-start);
/* Grab isolated pages from freelists. */
- outer_end = isolate_freepages_range(outer_start, end);
+ outer_end = isolate_freepages_range(&cc, outer_start, end);
if (!outer_end) {
ret = -EBUSY;
goto done;
_
Patches currently in -mm which might be from mgorman@xxxxxxx are
mm-remove-__gfp_no_kswapd.patch
mm-compaction-update-comment-in-try_to_compact_pages.patch
mm-vmscan-scale-number-of-pages-reclaimed-by-reclaim-compaction-based-on-failures.patch
mm-vmscan-scale-number-of-pages-reclaimed-by-reclaim-compaction-based-on-failures-fix.patch
mm-compaction-capture-a-suitable-high-order-page-immediately-when-it-is-made-available.patch
revert-mm-mempolicy-let-vma_merge-and-vma_split-handle-vma-vm_policy-linkages.patch
mempolicy-remove-mempolicy-sharing.patch
mempolicy-fix-a-race-in-shared_policy_replace.patch
mempolicy-fix-refcount-leak-in-mpol_set_shared_policy.patch
mempolicy-fix-a-memory-corruption-by-refcount-imbalance-in-alloc_pages_vma.patch
mempolicy-fix-a-memory-corruption-by-refcount-imbalance-in-alloc_pages_vma-v2.patch
mm-cma-discard-clean-pages-during-contiguous-allocation-instead-of-migration.patch
mm-cma-discard-clean-pages-during-contiguous-allocation-instead-of-migration-fix.patch
mm-fix-tracing-in-free_pcppages_bulk.patch
mm-fix-tracing-in-free_pcppages_bulk-fix.patch
cma-fix-counting-of-isolated-pages.patch
cma-count-free-cma-pages.patch
cma-count-free-cma-pages-fix.patch
cma-fix-watermark-checking.patch
cma-fix-watermark-checking-fix.patch
mm-page_alloc-use-get_freepage_migratetype-instead-of-page_private.patch
mm-remain-migratetype-in-freed-page.patch
memory-hotplug-bug-fix-race-between-isolation-and-allocation.patch
memory-hotplug-fix-pages-missed-by-race-rather-than-failing.patch
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long.patch
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix.patch
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix-2.patch
mm-compaction-move-fatal-signal-check-out-of-compact_checklock_irqsave.patch
mm-compaction-update-try_to_compact_pageskerneldoc-comment.patch
mm-compaction-acquire-the-zone-lru_lock-as-late-as-possible.patch
mm-compaction-acquire-the-zone-lru_lock-as-late-as-possible-fix.patch
mm-compaction-acquire-the-zone-lru_lock-as-late-as-possible-fix-fix.patch
mm-compaction-acquire-the-zone-lock-as-late-as-possible.patch
mm-compaction-acquire-the-zone-lock-as-late-as-possible-fix-2.patch
mm-compaction-acquire-the-zone-lock-as-late-as-possible-fix-3.patch
revert-mm-have-order-0-compaction-start-off-where-it-left.patch
mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated.patch
mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated-fix.patch
mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated-fix2.patch
mm-compaction-cache-if-a-pageblock-was-scanned-and-no-pages-were-isolated-fix3.patch
mm-compaction-restart-compaction-from-near-where-it-left-off.patch
mm-compaction-restart-compaction-from-near-where-it-left-off-fix.patch
mm-compaction-clear-pg_migrate_skip-based-on-compaction-and-reclaim-activity.patch
mm-numa-reclaim-from-all-nodes-within-reclaim-distance.patch
mm-numa-reclaim-from-all-nodes-within-reclaim-distance-fix.patch
mm-numa-reclaim-from-all-nodes-within-reclaim-distance-fix-fix.patch
mm-thp-fix-pmd_present-for-split_huge_page-and-prot_none-with-thp.patch
mm-revert-0def08e3-mm-mempolicyc-check-return-code-of-check_range.patch
mm-revert-0def08e3-mm-mempolicyc-check-return-code-of-check_range-fix.patch
cma-migrate-mlocked-pages.patch
cma-migrate-mlocked-pages-fix.patch
cma-decrease-ccnr_migratepages-after-reclaiming-pagelist.patch
make-gfp_notrack-definition-unconditional.patch
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