The patch titled
Subject: mm/memory_hotplug.c: fix the wrong usage of N_HIGH_MEMORY
has been added to the -mm tree. Its filename is
mm-memory_hotplug-fix-the-wrong-usage-of-n_high_memory.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memory_hotplug-fix-the-wrong-usage-of-n_high_memory.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memory_hotplug-fix-the-wrong-usage-of-n_high_memory.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Baoquan He <bhe@xxxxxxxxxx>
Subject: mm/memory_hotplug.c: fix the wrong usage of N_HIGH_MEMORY
In node_states_check_changes_online(), N_HIGH_MEMORY is used to substitute
ZONE_HIGHMEM directly. This is not right. N_HIGH_MEMORY is to mark the
memory state of node. Here zone index is checked, which should be
compared with 'ZONE_HIGHMEM' accordingly.
Replace it with ZONE_HIGHMEM.
Link: http://lkml.kernel.org/r/20190320080732.14933-1-bhe@xxxxxxxxxx
Fixes: 8efe33f40f3e ("mm/memory_hotplug.c: simplify node_states_check_changes_online")
Signed-off-by: Baoquan He <bhe@xxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: Oscar Salvador <osalvador@xxxxxxx>
Cc: Wei Yang <richard.weiyang@xxxxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/memory_hotplug.c~mm-memory_hotplug-fix-the-wrong-usage-of-n_high_memory
+++ a/mm/memory_hotplug.c
@@ -714,7 +714,7 @@ static void node_states_check_changes_on
if (zone_idx(zone) <= ZONE_NORMAL && !node_state(nid, N_NORMAL_MEMORY))
arg->status_change_nid_normal = nid;
#ifdef CONFIG_HIGHMEM
- if (zone_idx(zone) <= N_HIGH_MEMORY && !node_state(nid, N_HIGH_MEMORY))
+ if (zone_idx(zone) <= ZONE_HIGHMEM && !node_state(nid, N_HIGH_MEMORY))
arg->status_change_nid_high = nid;
#endif
}
_
Patches currently in -mm which might be from bhe@xxxxxxxxxx are
mm-memory_hotplug-fix-the-wrong-usage-of-n_high_memory.patch
