在 2025/1/11 9:45, Andrew Morton 写道:
On Fri, 10 Jan 2025 09:14:47 +0100 David Hildenbrand <david@xxxxxxxxxx> wrote:
To migrate huge 0, we obtain huge x from the pool. After the migration
is completed, we return the now-freed huge 0 back to the pool. When
it's time to migrate huge 1, we can simply reuse the now-freed huge 0
from the pool. As a result, when replace_free_hugepage_folios() is
executed, it cannot release huge 0 back to the buddy system.
To slove the proble above, we should prevent reuse of isolated free
hugepages.
s/slove/solve/
s/proble/problem/
Link: https://lore.kernel.org/lkml/1734503588-16254-1-git-send-email-yangge1116@xxxxxxx/
Fixes: 08d312ee4c0a ("mm: replace free hugepage folios after migration")
The commit id is not stable yet.
$ git tag --contains 08d312ee4c0a
mm-everything-2025-01-09-06-44
next-20250110
We should squash this into the original fix. Can you resend the whole
thing and merge the patch descriptions?
I queued this as
replace-free-hugepage-folios-after-migration-fix-3.patch. But yes, a
clean v4 with a redone changelog would be a nice thing to have.
ok, thanks.
