The patch titled
Subject: mm, memory hotplug: small cleanup in online_pages()
has been added to the -mm tree. Its filename is
mm-memory-hotplug-small-cleanup-in-online_pages.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memory-hotplug-small-cleanup-in-online_pages.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memory-hotplug-small-cleanup-in-online_pages.patch
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------------------------------------------------------
From: Vlastimil Babka <vbabka@xxxxxxx>
Subject: mm, memory hotplug: small cleanup in online_pages()
We can reuse the nid we've determined instead of repeated pfn_to_nid() usages.
Also zone_to_nid() should be a bit cheaper in general than pfn_to_nid().
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory_hotplug.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff -puN mm/memory_hotplug.c~mm-memory-hotplug-small-cleanup-in-online_pages mm/memory_hotplug.c
--- a/mm/memory_hotplug.c~mm-memory-hotplug-small-cleanup-in-online_pages
+++ a/mm/memory_hotplug.c
@@ -1082,7 +1082,7 @@ int __ref online_pages(unsigned long pfn
arg.nr_pages = nr_pages;
node_states_check_changes_online(nr_pages, zone, &arg);
- nid = pfn_to_nid(pfn);
+ nid = zone_to_nid(zone);
ret = memory_notify(MEM_GOING_ONLINE, &arg);
ret = notifier_to_errno(ret);
@@ -1122,7 +1122,7 @@ int __ref online_pages(unsigned long pfn
pgdat_resize_unlock(zone->zone_pgdat, &flags);
if (onlined_pages) {
- node_states_set_node(zone_to_nid(zone), &arg);
+ node_states_set_node(nid, &arg);
if (need_zonelists_rebuild)
build_all_zonelists(NULL, NULL);
else
@@ -1134,7 +1134,7 @@ int __ref online_pages(unsigned long pfn
init_per_zone_wmark_min();
if (onlined_pages) {
- kswapd_run(zone_to_nid(zone));
+ kswapd_run(nid);
kcompactd_run(nid);
}
_
Patches currently in -mm which might be from vbabka@xxxxxxx are
tracepoints-move-trace_print_flags-definitions-to-tracepoint-defsh.patch
mm-tracing-make-show_gfp_flags-up-to-date.patch
tools-perf-make-gfp_compact_table-up-to-date.patch
mm-tracing-unify-mm-flags-handling-in-tracepoints-and-printk.patch
mm-printk-introduce-new-format-string-for-flags.patch
mm-printk-introduce-new-format-string-for-flags-fix.patch
mm-debug-replace-dump_flags-with-the-new-printk-formats.patch
mm-page_alloc-print-symbolic-gfp_flags-on-allocation-failure.patch
mm-oom-print-symbolic-gfp_flags-in-oom-warning.patch
mm-page_owner-print-migratetype-of-page-and-pageblock-symbolic-flags.patch
mm-page_owner-convert-page_owner_inited-to-static-key.patch
mm-page_owner-copy-page-owner-info-during-migration.patch
mm-page_owner-track-and-print-last-migrate-reason.patch
mm-page_owner-dump-page-owner-info-from-dump_page.patch
mm-debug-move-bad-flags-printing-to-bad_page.patch
mm-kswapd-remove-bogus-check-of-balance_classzone_idx.patch
mm-compaction-introduce-kcompactd.patch
mm-memory-hotplug-small-cleanup-in-online_pages.patch
mm-kswapd-replace-kswapd-compaction-with-waking-up-kcompactd.patch
mm-compaction-adapt-isolation_suitable-flushing-to-kcompactd.patch
mm-use-radix_tree_iter_retry-fix.patch
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