From: Christoph Hellwig <hch@infradead.org>
To: Muchun Song <songmuchun@bytedance.com>
Cc: dan.j.williams@intel.com, willy@infradead.org, jack@suse.cz,
viro@zeniv.linux.org.uk, akpm@linux-foundation.org,
apopple@nvidia.com, shy828301@gmail.com, rcampbell@nvidia.com,
hughd@google.com, xiyuyang19@fudan.edu.cn,
kirill.shutemov@linux.intel.com, zwisler@kernel.org,
hch@infradead.org, linux-fsdevel@vger.kernel.org,
nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, duanxiongchun@bytedance.com,
smuchun@gmail.com
Subject: Re: [PATCH v5 1/6] mm: rmap: fix cache flush on THP pages
Date: Tue, 22 Mar 2022 01:34:11 -0700 [thread overview]
Message-ID: <YjmKAxH8y2cjcJrP@infradead.org> (raw)
In-Reply-To: <20220318074529.5261-2-songmuchun@bytedance.com>
On Fri, Mar 18, 2022 at 03:45:24PM +0800, Muchun Song 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>
Looks good:
Reviewed-by: Christoph Hellwig <hch@lst.de>
next prev parent reply other threads:[~2022-03-22 8:34 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-18 7:45 [PATCH v5 0/6] Fix some bugs related to ramp and dax Muchun Song
2022-03-18 7:45 ` [PATCH v5 1/6] mm: rmap: fix cache flush on THP pages Muchun Song
2022-03-22 8:34 ` Christoph Hellwig [this message]
2022-03-18 7:45 ` [PATCH v5 2/6] dax: fix cache flush on PMD-mapped pages Muchun Song
2022-03-22 8:34 ` Christoph Hellwig
2022-03-18 7:45 ` [PATCH v5 3/6] mm: rmap: introduce pfn_mkclean_range() to cleans PTEs Muchun Song
2022-03-18 7:45 ` [PATCH v5 4/6] mm: pvmw: add support for walking devmap pages Muchun Song
2022-03-18 7:45 ` [PATCH v5 5/6] dax: fix missing writeprotect the pte entry Muchun Song
2022-03-22 8:37 ` Christoph Hellwig
2022-03-22 8:46 ` Muchun Song
2022-03-18 7:45 ` [PATCH v5 6/6] mm: simplify follow_invalidate_pte() Muchun Song
2022-03-22 8:35 ` Christoph Hellwig
2022-03-31 15:55 ` [PATCH v5 0/6] Fix some bugs related to ramp and dax Qian Cai
2022-03-31 22:36 ` Andrew Morton
2022-03-31 22:48 ` Stephen Rothwell
2022-04-01 3:44 ` Muchun Song
2022-04-01 8:50 ` Muchun Song
2022-04-01 11:07 ` Qian Cai
2022-04-02 15:22 ` Muchun Song
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