Re: [PATCH 0/4] A few cleanup and fixup patches for migration

[Miaohe Lin]

On 2022/4/12 10:25, ying.huang@xxxxxxxxx wrote:
> On Sat, 2022-04-09 at 15:38 +0800, Miaohe Lin wrote:
>> Hi everyone,
>> This series contains a few patches to remove unneeded lock page and
>> PageMovable check, reduce the rcu lock duration. Also we fix potential
>> pte_unmap on an not mapped pte. More details can be found in the
>> respective changelogs. Thanks!
> 
> It appears that you ignored my comments for the previous version.  Can
> you check it?

I do remember [1] and I tried to make isolate_huge_page consistent with isolate_lru_page.
But their return value conventions are different. isolate_huge_page return 0 when
success while isolate_huge_page returns true in this case. So make them consistent
would lead to many code change. I should have added this in my changelog.

Thanks.

[1] https://lore.kernel.org/linux-mm/8735jsgctq.fsf@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/


> 
> Best Regards,
> Huang, Ying
> 
>> ---
>> v1:
>>   rebase [1] on mainline.
>>
>> [1] https://lore.kernel.org/lkml/20220304093409.25829-2-linmiaohe@xxxxxxxxxx/T/
>> ---
>> Miaohe Lin (4):
>>   mm/migration: reduce the rcu lock duration
>>   mm/migration: remove unneeded lock page and PageMovable check
>>   mm/migration: return errno when isolate_huge_page failed
>>   mm/migration: fix potential pte_unmap on an not mapped pte
>>
>>  include/linux/migrate.h |  2 +-
>>  include/linux/swapops.h |  4 ++--
>>  mm/filemap.c            | 10 +++++-----
>>  mm/hugetlb.c            |  2 +-
>>  mm/migrate.c            | 31 +++++++++++++------------------
>>  5 files changed, 22 insertions(+), 27 deletions(-)
>>
> 
> 
> 
> .
>