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| author | Vlastimil Babka <vbabka@suse.cz> | 2016-03-17 14:18:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-17 15:09:34 -0700 |
| commit | e888ca3545dc6823603b976e40b62af2c68b6fcc (patch) | |
| tree | 7c7fbc657586aa9af765f59ca6357704156a26d3 /mm/memory_hotplug.c | |
| parent | 698b1b30642f1ff0ea10ef1de9745ab633031377 (diff) | |
| download | linux-stable-e888ca3545dc6823603b976e40b62af2c68b6fcc.tar.gz linux-stable-e888ca3545dc6823603b976e40b62af2c68b6fcc.tar.bz2 linux-stable-e888ca3545dc6823603b976e40b62af2c68b6fcc.zip | |
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@suse.cz>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: David Rientjes <rientjes@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory_hotplug.c')
| -rw-r--r-- | mm/memory_hotplug.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index d9bcb26fc4df..c832ef3565cc 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1055,7 +1055,7 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_typ 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); @@ -1095,7 +1095,7 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_typ 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 @@ -1107,7 +1107,7 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_typ init_per_zone_wmark_min(); if (onlined_pages) { - kswapd_run(zone_to_nid(zone)); + kswapd_run(nid); kcompactd_run(nid); } |