diff options
| author | Michal Hocko <mhocko@suse.com> | 2017-09-07 02:20:27 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-07 03:27:26 +0300 |
| commit | 34ad1296571f7a004a761e3afc18e79428a726a8 (patch) | |
| tree | 2f5053ba543bf0bfb48e8bfd72af1b2d199655c3 /mm/memory_hotplug.c | |
| parent | 72675e131eb418c78980c1e683c0c25a25b61221 (diff) | |
| download | linux-34ad1296571f7a004a761e3afc18e79428a726a8.tar.xz | |
mm, memory_hotplug: remove explicit build_all_zonelists from try_online_node
try_online_node calls hotadd_new_pgdat which already calls
build_all_zonelists. So the additional call is redundant. Even though
hotadd_new_pgdat will only initialize zonelists of the new node this is
the right thing to do because such a node doesn't have any memory so
other zonelists would ignore all the zones from this node anyway.
Link: http://lkml.kernel.org/r/20170721143915.14161-6-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Shaohua Li <shaohua.li@intel.com>
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 | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index c4df7d3c64d1..2f0c7ebc7624 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1081,13 +1081,6 @@ int try_online_node(int nid) node_set_online(nid); ret = register_one_node(nid); BUG_ON(ret); - - if (pgdat->node_zonelists->_zonerefs->zone == NULL) { - mutex_lock(&zonelists_mutex); - build_all_zonelists(NULL); - mutex_unlock(&zonelists_mutex); - } - out: mem_hotplug_done(); return ret; |