Re: [PATCH v4 5/7] mm: thp: split huge page to any lower order pages (except order-1).

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 13 Feb 2024, at 17:05, Luis Chamberlain wrote:

> On Tue, Feb 13, 2024 at 04:55:18PM -0500, Zi Yan wrote:
>> From: Zi Yan <ziy@xxxxxxxxxx>
>> Order-1 folio is not supported because _deferred_list, which is used by
>> partially mapped folios, is stored in subpage 2 and an order-1 folio only
>> has subpage 0 and 1.
>
> The LBS patches has the patch from Matthew which enables and allowed us
> to successfully test order 1. So this restriction could be dropped if
> that gets merged.

OK. But it only applies to file-backed folios IIUC. Anonymous folios still
cannot be split to order-1.

--
Best Regards,
Yan, Zi

Attachment: signature.asc
Description: OpenPGP digital signature


[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [NTFS 3]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [NTFS 3]     [Samba]     [Device Mapper]     [CEPH Development]

  Powered by Linux