linux-fsdevel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Christoph Hellwig <hch@lst.de>
To: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Hannes Reinecke <hare@suse.de>,
	linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Christoph Hellwig <hch@lst.de>,
	Luis Chamberlain <mcgrof@kernel.org>
Subject: Re: [PATCH 1/2] highmem: Add memcpy_to_folio()
Date: Thu, 15 Jun 2023 07:58:31 +0200	[thread overview]
Message-ID: <20230615055831.GA5609@lst.de> (raw)
In-Reply-To: <20230614134853.1521439-1-willy@infradead.org>

On Wed, Jun 14, 2023 at 02:48:52PM +0100, Matthew Wilcox (Oracle) wrote:
> This is the folio equivalent of memcpy_to_page(), but it handles large
> highmem folios.  It may be a little too big to inline on systems that
> have CONFIG_HIGHMEM enabled but on systems we actually care about almost
> all the code will be eliminated.

I suspect the right thing is to have the trivial version without kmapping
for !HIGHMEM inline, and a separate version with the kmap loop out of
line for HIGHMEM builds.

Same for the next patch.

  parent reply	other threads:[~2023-06-15  5:58 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-14 11:46 [PATCH 0/7] RFC: high-order folio support for I/O Hannes Reinecke
2023-06-14 11:46 ` [PATCH 1/7] brd: use XArray instead of radix-tree to index backing pages Hannes Reinecke
2023-06-14 12:45   ` Matthew Wilcox
2023-06-14 12:50     ` Pankaj Raghav
2023-06-14 13:03       ` Hannes Reinecke
2023-06-14 11:46 ` [PATCH 2/7] brd: convert to folios Hannes Reinecke
2023-06-14 13:45   ` Matthew Wilcox
2023-06-14 13:50     ` Hannes Reinecke
2023-06-14 11:46 ` [PATCH 3/7] brd: abstract page_size conventions Hannes Reinecke
2023-06-14 11:46 ` [PATCH 4/7] brd: make sector size configurable Hannes Reinecke
2023-06-14 12:55   ` Matthew Wilcox
2023-06-14 13:02     ` Hannes Reinecke
2023-06-15  2:17   ` Dave Chinner
2023-06-15  5:55     ` Christoph Hellwig
2023-06-15  6:33       ` Hannes Reinecke
2023-06-15  6:23     ` Hannes Reinecke
2023-06-14 11:46 ` [PATCH 5/7] brd: make logical " Hannes Reinecke
2023-06-14 11:46 ` [PATCH 6/7] mm/filemap: allocate folios with mapping blocksize Hannes Reinecke
     [not found]   ` <CGME20230619080901eucas1p224e67aa31866d2ad8d259b2209c2db67@eucas1p2.samsung.com>
2023-06-19  8:08     ` Pankaj Raghav
2023-06-19  8:42       ` Hannes Reinecke
2023-06-19 22:57         ` Dave Chinner
2023-06-20  0:00           ` Matthew Wilcox
2023-06-20  5:57           ` Hannes Reinecke
2023-06-14 11:46 ` [PATCH 7/7] mm/readahead: align readahead down to " Hannes Reinecke
2023-06-14 13:17 ` [PATCH 0/7] RFC: high-order folio support for I/O Hannes Reinecke
2023-06-14 13:53   ` Matthew Wilcox
2023-06-14 15:06     ` Hannes Reinecke
2023-06-14 15:35       ` Hannes Reinecke
2023-06-14 17:46         ` Matthew Wilcox
2023-06-14 23:53       ` Dave Chinner
2023-06-15  6:21         ` Hannes Reinecke
2023-06-15  8:51           ` Dave Chinner
2023-06-16 16:06             ` Kent Overstreet
2023-06-15  3:44       ` Dave Chinner
2023-06-14 13:48 ` [PATCH 1/2] highmem: Add memcpy_to_folio() Matthew Wilcox (Oracle)
2023-06-14 18:38   ` kernel test robot
2023-06-14 19:30   ` kernel test robot
2023-06-15  5:58   ` Christoph Hellwig [this message]
2023-06-15 12:16     ` Matthew Wilcox
2023-06-14 13:48 ` [PATCH 2/2] highmem: Add memcpy_from_folio() Matthew Wilcox (Oracle)

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=20230615055831.GA5609@lst.de \
    --to=hch@lst.de \
    --cc=akpm@linux-foundation.org \
    --cc=hare@suse.de \
    --cc=linux-block@vger.kernel.org \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=mcgrof@kernel.org \
    --cc=willy@infradead.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).