From: jane.chu@oracle.com
To: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org
Cc: Muchun Song <muchun.song@linux.dev>,
Oscar Salvador <osalvador@suse.de>,
David Hildenbrand <david@kernel.org>,
Miaohe Lin <linmiaohe@huawei.com>,
Naoya Horiguchi <nao.horiguchi@gmail.com>,
Jan Kara <jack@suse.cz>,
linux-fsdevel@vger.kernel.org,
Christian Brauner <christian@brauner.io>,
Jiaqi Yan <jiaqiyan@google.com>
Subject: Re: [PATCH v9 00/15] Use generic_file_read_iter() in hugetlbfs
Date: Thu, 6 Aug 2026 12:47:59 -0700 [thread overview]
Message-ID: <cceec094-ab67-48ab-8dfb-2a800021ffb8@oracle.com> (raw)
In-Reply-To: <20260805210557.1118966-1-willy@infradead.org>
Hi, Matthew,
On 8/5/2026 2:05 PM, Matthew Wilcox (Oracle) wrote:
> This set of patches are separated out from Jane's earlier series.
> https://lore.kernel.org/linux-mm/20260617172534.1740152-1-jane.chu@oracle.com/
>
> We need three things to use filemap_read_iter() instead of a hugetlbfs
> specific read_iter: hwpoison handling, treating gaps in the pagecache as
> holes, and having hugetlb set the folio size in the mapping. hwopison
> handling turned out to need a lot of prep work; the other two things
> are fairly straightforward.
>
> Sashiko complains that the implementation of AS_AUTHORITATIVE is
> incomplete, but hugetlbfs doesn't use any of that functionality.
> We'll add it when we need it, either when hugetlbfs uses it, or when we
> convert shmem to use filemap.
I've run some tests (read over hole, hwpoison etc) for the series,
the results look good.
-thanks,
-jane
prev parent reply other threads:[~2026-08-06 19:48 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-05 21:05 [PATCH v9 00/15] Use generic_file_read_iter() in hugetlbfs Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 01/15] memory-failure: Fix hardware poison check in unpoison_memory() again Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 02/15] memory-failure: Prevent hugetlb freeing during unpoisoning Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 03/15] mm: Rename folio_contain_hwpoison_page() to folio_has_hwpoison_page() Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 04/15] hugetlb: Mark some function arguments as const Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 05/15] guest_memfd: Use folio_has_hwpoisoned_page() Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 06/15] kpageflags: Use is_page_hwpoison() to set KPF_HWPOISON Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 07/15] hugetlb: Move poison to pages before clearing hugetlb page type Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 08/15] hugetlb: Use the has_hwpoisoned flag Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 09/15] mm: Remove locking mf_mutex in is_raw_hwpoison_page_in_hugepage() Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 10/15] mm: Check individual hugetlb pages for poison Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 11/15] filemap: Add hwpoison handling to filemap_read() Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 12/15] filemap: Remove checks in mapping_set_folio_order_range() Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 13/15] hugetlb: Set mapping folio order Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 14/15] filemap: Add support for authoritative mappings Matthew Wilcox (Oracle)
2026-08-05 21:05 ` [PATCH v9 15/15] hugetlb: replace hugetlbfs_read_iter() with generic_file_read_iter() Matthew Wilcox (Oracle)
2026-08-06 19:47 ` jane.chu [this message]
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