From: Dan Williams <dan.j.williams@intel.com>
To: Muchun Song <songmuchun@bytedance.com>
Cc: Matthew Wilcox <willy@infradead.org>, Jan Kara <jack@suse.cz>,
Al Viro <viro@zeniv.linux.org.uk>,
Andrew Morton <akpm@linux-foundation.org>,
Alistair Popple <apopple@nvidia.com>,
Yang Shi <shy828301@gmail.com>,
Ralph Campbell <rcampbell@nvidia.com>,
Hugh Dickins <hughd@google.com>,
xiyuyang19@fudan.edu.cn,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Ross Zwisler <zwisler@kernel.org>,
Christoph Hellwig <hch@infradead.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Linux NVDIMM <nvdimm@lists.linux.dev>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux MM <linux-mm@kvack.org>,
duanxiongchun@bytedance.com, Muchun Song <smuchun@gmail.com>
Subject: Re: [PATCH v4 1/6] mm: rmap: fix cache flush on THP pages
Date: Wed, 9 Mar 2022 16:01:44 -0800 [thread overview]
Message-ID: <CAPcyv4j0cMaknAcMSHJ0U0QP4E2btir2b+1g=Rw+o2CHVQrH=A@mail.gmail.com> (raw)
In-Reply-To: <20220302082718.32268-2-songmuchun@bytedance.com>
On Wed, Mar 2, 2022 at 12:29 AM Muchun Song <songmuchun@bytedance.com> wrote:
>
> The flush_cache_page() only remove a PAGE_SIZE sized range from the cache.
> However, it does not cover the full pages in a THP except a head page.
> Replace it with flush_cache_range() to fix this issue. At least, no
> problems were found due to this. Maybe because the architectures that
> have virtual indexed caches is less.
>
> Fixes: f27176cfc363 ("mm: convert page_mkclean_one() to use page_vma_mapped_walk()")
> Signed-off-by: Muchun Song <songmuchun@bytedance.com>
> Reviewed-by: Yang Shi <shy828301@gmail.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
next prev parent reply other threads:[~2022-03-10 0:01 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-02 8:27 [PATCH v4 0/6] Fix some bugs related to ramp and dax Muchun Song
2022-03-02 8:27 ` [PATCH v4 1/6] mm: rmap: fix cache flush on THP pages Muchun Song
2022-03-10 0:01 ` Dan Williams [this message]
2022-03-02 8:27 ` [PATCH v4 2/6] dax: fix cache flush on PMD-mapped pages Muchun Song
2022-03-10 0:06 ` Dan Williams
2022-03-10 13:48 ` Muchun Song
2022-03-02 8:27 ` [PATCH v4 3/6] mm: rmap: introduce pfn_mkclean_range() to cleans PTEs Muchun Song
2022-03-10 0:26 ` Dan Williams
2022-03-10 0:40 ` Dan Williams
2022-03-02 8:27 ` [PATCH v4 4/6] mm: pvmw: add support for walking devmap pages Muchun Song
2022-03-02 8:27 ` [PATCH v4 5/6] dax: fix missing writeprotect the pte entry Muchun Song
2022-03-10 0:59 ` Dan Williams
2022-03-11 9:04 ` Muchun Song
2022-03-14 20:50 ` Dan Williams
2022-03-15 7:51 ` Muchun Song
2022-03-02 8:27 ` [PATCH v4 6/6] mm: remove range parameter from follow_invalidate_pte() Muchun Song
2022-03-10 1:02 ` Dan Williams
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