From: Christoph Hellwig <hch@lst.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Ira Weiny <ira.weiny@intel.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: fix memcpy_to_page and memzero_page
Date: Tue, 13 Jul 2021 07:52:29 +0200 [thread overview]
Message-ID: <20210713055231.137602-1-hch@lst.de> (raw)
Hi all,
we need to call flush_dcache_page on any kmapped page, and on any page
we write to that may be mapped into the page cache, which can happen
quite frequently for anything we use raw pages for.
Patch 1 make sure memcpy_to_page and memzero_page to do the right thing
for that, and patch 2 fixes up the lost switch to kmap_local_page for
memzero_page.
next reply other threads:[~2021-07-13 5:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-13 5:52 Christoph Hellwig [this message]
2021-07-13 5:52 ` [PATCH 1/2] mm: call flush_dcache_page in memcpy_to_page and memzero_page Christoph Hellwig
2021-07-14 1:31 ` Andrew Morton
2021-07-14 5:28 ` Christoph Hellwig
2021-07-14 8:09 ` Ira Weiny
2021-07-13 5:52 ` [PATCH 2/2] mm: use kmap_local_page in memzero_page Christoph Hellwig
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210713055231.137602-1-hch@lst.de \
--to=hch@lst.de \
--cc=akpm@linux-foundation.org \
--cc=ira.weiny@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.