diff options
| author | Miaohe Lin <linmiaohe@huawei.com> | 2022-09-16 10:22:49 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-04 00:03:29 +0300 |
| commit | b36184553d41c59e6712f9d4699aca24577fbd4a (patch) | |
| tree | 2704184de8d6200f1e6e0b1a9e6641a13cca6a0b /mm/zsmalloc.c | |
| parent | 30e3b5d7c82f78c63c53197b5d8b99636bb60d56 (diff) | |
| download | linux-b36184553d41c59e6712f9d4699aca24577fbd4a.tar.xz | |
mm/page_alloc: add missing is_migrate_isolate() check in set_page_guard()
In MIGRATE_ISOLATE case, zone freepage state shouldn't be modified as
caller will take care of it. Add missing is_migrate_isolate() here to
avoid possible unbalanced freepage state. This would happen if someone
isolates the block, and then we face an MCE failure/soft-offline on a page
within that block. __mod_zone_freepage_state() will be triggered via
below call trace which already had been triggered back when block was
isolated:
take_page_off_buddy
break_down_buddy_pages
set_page_guard
Link: https://lkml.kernel.org/r/20220916072257.9639-9-linmiaohe@huawei.com
Fixes: 06be6ff3d2ec ("mm,hwpoison: rework soft offline for free pages")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/zsmalloc.c')
0 files changed, 0 insertions, 0 deletions