From: Matthew Wilcox <willy@infradead.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Christoph Hellwig <hch@lst.de>,
linux-arch <linux-arch@vger.kernel.org>,
Ira Weiny <ira.weiny@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: flush_dcache_page vs kunmap_local
Date: Thu, 4 Nov 2021 18:38:56 +0000 [thread overview]
Message-ID: <YYQowGK3oIAA5Yei@casper.infradead.org> (raw)
In-Reply-To: <CAHk-=wiKac4t-fOP_3fAf7nETfFLhT3ShmRmBq2J96y6jAr56Q@mail.gmail.com>
On Thu, Nov 04, 2021 at 08:30:55AM -0700, Linus Torvalds wrote:
> Why did this come up? Do you actually have some hardware or situation
> that cares?
Oh, we're doing review of the XFS/iomap folio patches, which led to
looking at zero_user_segments(), and I realised that memzero_page()
was now functionally identical to zero_user(). And you'd been quite
specific about not having flush_dcache_page() in there, so ... I wondered
if you'd had a change of mind.
next prev parent reply other threads:[~2021-11-04 18:40 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-04 15:00 flush_dcache_page vs kunmap_local Matthew Wilcox
2021-11-04 15:30 ` Linus Torvalds
2021-11-04 16:54 ` Catalin Marinas
2021-11-04 17:08 ` Linus Torvalds
2021-11-04 18:04 ` Catalin Marinas
2021-11-04 18:20 ` Russell King (Oracle)
2021-11-04 18:23 ` Linus Torvalds
2021-11-05 19:40 ` Catalin Marinas
2021-11-04 18:38 ` Matthew Wilcox [this message]
2021-11-04 21:02 ` Linus Torvalds
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