From: Matthew Wilcox <willy@infradead.org>
To: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Zi Yan <ziy@nvidia.com>, David Hildenbrand <david@kernel.org>,
Rik van Riel <riel@surriel.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>,
Harry Yoo <harry.yoo@oracle.com>, Jann Horn <jannh@google.com>,
linux-mm@kvack.org
Subject: Re: [PATCH 2/2] migrate: Replace RMP_ flags with TTU_ flags
Date: Fri, 9 Jan 2026 14:48:25 +0000 [thread overview]
Message-ID: <aWEVOWPhucKqZ8Ay@casper.infradead.org> (raw)
In-Reply-To: <4b5b29ec-0629-4141-8022-8304e990bc64@lucifer.local>
On Fri, Jan 09, 2026 at 02:44:20PM +0000, Lorenzo Stoakes wrote:
> > enum ttu_flags {
> > + TTU_USE_SHARED_ZEROPAGE = 0x2, /* for unused pages of large folios */
>
> Kinda weird we had 0x2 free :) I wonder why? Did we have flags here we removed I
> guess?
a98a2f0c8ce1
- TTU_MIGRATION = 0x1, /* migration mode */
cd62734ca60d
- TTU_MUNLOCK = 0x2, /* munlock mode */
732ed55823fc
+ TTU_SYNC = 0x10, /* avoid racy checks with PVMW_SYNC */
013339df116c
- TTU_IGNORE_ACCESS = 0x10, /* don't age */
a128ca71fb29 did many changes all at once and I shan't attempt to
summarise
next prev parent reply other threads:[~2026-01-09 14:48 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-09 4:13 [PATCH 0/2] migrate: Fix up hugetlb file folio handling Matthew Wilcox (Oracle)
2026-01-09 4:13 ` [PATCH 1/2] migrate: Correct lock ordering for hugetlb file folios Matthew Wilcox (Oracle)
2026-01-09 4:32 ` Lance Yang
2026-01-09 13:50 ` David Hildenbrand (Red Hat)
2026-01-09 14:44 ` Matthew Wilcox
2026-01-09 14:57 ` Zi Yan
2026-01-09 4:13 ` [PATCH 2/2] migrate: Replace RMP_ flags with TTU_ flags Matthew Wilcox (Oracle)
2026-01-09 13:52 ` David Hildenbrand (Red Hat)
2026-01-09 14:44 ` Lorenzo Stoakes
2026-01-09 14:48 ` Matthew Wilcox [this message]
2026-01-09 17:20 ` Zi Yan
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