From: David Hildenbrand <david@redhat.com>
To: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
linux-fsdevel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
linux-aio@kvack.org, linux-btrfs@vger.kernel.org,
linux-ext4@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com,
linux-mm@kvack.org, linux-xfs@vger.kernel.org,
linux-nfs@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net,
ocfs2-devel@oss.oracle.com, linux-mtd@lists.infradead.org,
virtualization@lists.linux-foundation.org
Subject: Re: [PATCH 15/20] balloon: Convert to migrate_folio
Date: Tue, 7 Jun 2022 09:36:21 +0200 [thread overview]
Message-ID: <e4d017a4-556d-bb5f-9830-a8843591bc8d@redhat.com> (raw)
In-Reply-To: <20220606204050.2625949-16-willy@infradead.org>
On 06.06.22 22:40, Matthew Wilcox (Oracle) wrote:
> This is little more than changing the types over; there's no real work
> being done in this function.
>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
> ---
> mm/balloon_compaction.c | 15 +++++++--------
> 1 file changed, 7 insertions(+), 8 deletions(-)
>
> diff --git a/mm/balloon_compaction.c b/mm/balloon_compaction.c
> index 4b8eab4b3f45..3f75b876ad76 100644
> --- a/mm/balloon_compaction.c
> +++ b/mm/balloon_compaction.c
> @@ -230,11 +230,10 @@ static void balloon_page_putback(struct page *page)
>
>
> /* move_to_new_page() counterpart for a ballooned page */
> -static int balloon_page_migrate(struct address_space *mapping,
> - struct page *newpage, struct page *page,
> - enum migrate_mode mode)
> +static int balloon_migrate_folio(struct address_space *mapping,
> + struct folio *dst, struct folio *src, enum migrate_mode mode)
> {
> - struct balloon_dev_info *balloon = balloon_page_device(page);
> + struct balloon_dev_info *balloon = balloon_page_device(&src->page);
>
> /*
> * We can not easily support the no copy case here so ignore it as it
> @@ -244,14 +243,14 @@ static int balloon_page_migrate(struct address_space *mapping,
> if (mode == MIGRATE_SYNC_NO_COPY)
> return -EINVAL;
>
> - VM_BUG_ON_PAGE(!PageLocked(page), page);
> - VM_BUG_ON_PAGE(!PageLocked(newpage), newpage);
> + VM_BUG_ON_FOLIO(!folio_test_locked(src), src);
> + VM_BUG_ON_FOLIO(!folio_test_locked(dst), dst);
>
> - return balloon->migratepage(balloon, newpage, page, mode);
> + return balloon->migratepage(balloon, &dst->page, &src->page, mode);
> }
>
> const struct address_space_operations balloon_aops = {
> - .migratepage = balloon_page_migrate,
> + .migrate_folio = balloon_migrate_folio,
> .isolate_page = balloon_page_isolate,
> .putback_page = balloon_page_putback,
> };
I assume you're working on conversion of the other callbacks as well,
because otherwise, this ends up looking a bit inconsistent and confusing :)
Change LGTM.
--
Thanks,
David / dhildenb
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next prev parent reply other threads:[~2022-06-07 7:37 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-06 20:40 [PATCH 00/20] Convert aops->migratepage to aops->migrate_folio Matthew Wilcox (Oracle)
2022-06-06 20:40 ` [PATCH 01/20] fs: Add aops->migrate_folio Matthew Wilcox (Oracle)
2022-06-08 8:09 ` Christoph Hellwig
2022-06-06 20:40 ` [PATCH 02/20] mm/migrate: Convert fallback_migrate_page() to fallback_migrate_folio() Matthew Wilcox (Oracle)
2022-06-08 8:11 ` Christoph Hellwig
2022-06-06 20:40 ` [PATCH 03/20] mm/migrate: Convert writeout() to take a folio Matthew Wilcox (Oracle)
2022-06-08 8:11 ` Christoph Hellwig
2022-06-06 20:40 ` [PATCH 04/20] mm/migrate: Convert buffer_migrate_page() to buffer_migrate_folio() Matthew Wilcox (Oracle)
2022-06-07 3:37 ` kernel test robot
2022-06-07 14:57 ` Matthew Wilcox
2022-06-07 8:01 ` kernel test robot
2022-06-08 8:12 ` Christoph Hellwig
2022-06-06 20:40 ` [PATCH 05/20] mm/migrate: Convert expected_page_refs() to folio_expected_refs() Matthew Wilcox (Oracle)
2022-06-07 13:41 ` Brian Foster
2022-06-07 14:11 ` Matthew Wilcox
2022-06-08 8:14 ` Christoph Hellwig
2022-06-06 20:40 ` [PATCH 06/20] btrfs: Convert btree_migratepage to migrate_folio Matthew Wilcox (Oracle)
2022-06-08 8:16 ` Christoph Hellwig
2022-06-06 20:40 ` [PATCH 07/20] nfs: Convert " Matthew Wilcox (Oracle)
2022-06-07 19:02 ` Anna Schumaker
2022-06-08 8:17 ` Christoph Hellwig
2022-06-06 20:40 ` [PATCH 08/20] mm/migrate: Convert migrate_page() to migrate_folio() Matthew Wilcox (Oracle)
2022-06-08 8:18 ` Christoph Hellwig
2022-06-06 20:40 ` [PATCH 09/20] mm/migrate: Add filemap_migrate_folio() Matthew Wilcox (Oracle)
2022-06-08 8:19 ` Christoph Hellwig
2022-06-06 20:40 ` [PATCH 10/20] btrfs: Convert btrfs_migratepage to migrate_folio Matthew Wilcox (Oracle)
2022-06-08 8:19 ` Christoph Hellwig
2022-06-06 20:40 ` [PATCH 11/20] ubifs: Convert to filemap_migrate_folio() Matthew Wilcox (Oracle)
2022-06-06 20:40 ` [PATCH 12/20] f2fs: " Matthew Wilcox (Oracle)
2022-06-06 20:40 ` [PATCH 13/20] aio: Convert to migrate_folio Matthew Wilcox (Oracle)
2022-06-08 8:20 ` Christoph Hellwig
2022-06-06 20:40 ` [PATCH 14/20] hugetlb: " Matthew Wilcox (Oracle)
2022-06-07 6:13 ` kernel test robot
2022-06-07 15:02 ` Matthew Wilcox
2022-06-06 20:40 ` [PATCH 15/20] balloon: " Matthew Wilcox (Oracle)
2022-06-07 7:36 ` David Hildenbrand [this message]
2022-06-07 14:24 ` Matthew Wilcox
2022-06-07 19:21 ` Matthew Wilcox
2022-06-08 9:59 ` David Hildenbrand
2022-06-08 13:06 ` Rafael Aquini
2022-06-06 20:40 ` [PATCH 16/20] secretmem: " Matthew Wilcox (Oracle)
2022-06-06 20:40 ` [PATCH 17/20] z3fold: " Matthew Wilcox (Oracle)
2022-06-06 20:40 ` [PATCH 18/20] zsmalloc: " Matthew Wilcox (Oracle)
2022-06-06 20:40 ` [PATCH 19/20] fs: Remove aops->migratepage() Matthew Wilcox (Oracle)
2022-06-08 8:21 ` Christoph Hellwig
2022-06-06 20:40 ` [PATCH 20/20] mm/folio-compat: Remove migration compatibility functions Matthew Wilcox (Oracle)
2022-06-08 8:22 ` Christoph Hellwig
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