linux-kernel - Re: iomap folio conversion for 5.17

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Date:   Wed, 1 Dec 2021 17:49:42 -0800
From:   "Darrick J. Wong" <djwong@...nel.org>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     xfs <linux-xfs@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: iomap folio conversion for 5.17

On Thu, Nov 25, 2021 at 09:08:11PM +0000, Matthew Wilcox wrote:
> On Wed, Nov 24, 2021 at 10:39:05AM -0800, Darrick J. Wong wrote:
> > Hi folks,
> > 
> > The iomap-for-next branch of the xfs-linux repository at:
> > 
> > 	git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git
> > 
> > has just been updated.
> 
> Hi Darrick,
> 
> Would you like to pull the folio changes from my git tree?
> They are generally as posted previously, with minor tweaks to match
> upstream changes.  They do not introduce any new xfstests problems
> in my testing.

Since you've rebased against 5.16-rc3, would you mind sending a fresh
pull request (in a new thread), please?  Particularly since the tag
commit id isn't the same anymore...

--D

> The following changes since commit b501b85957deb17f1fe0a861fee820255519d526:
> 
>   Merge tag 'asm-generic-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic (2021-11-25 10:41:28 -0800)
> 
> are available in the Git repository at:
> 
>   git://git.infradead.org/users/willy/linux.git tags/iomap-folio-5.17
> 
> for you to fetch changes up to 979fe192e8a935968fd739983217128b431f6268:
> 
>   xfs: Support large folios (2021-11-25 14:03:56 -0500)
> 
> ----------------------------------------------------------------
> Convert fs/iomap to use folios
> 
> These patches prepare XFS to use large folios to cache files.
> There are some preliminary patches to add folio interfaces to the
> block layer & buffer layer, then all the iomap functions are
> converted to use folios instead of pages.
> 
> ----------------------------------------------------------------
> Matthew Wilcox (Oracle) (24):
>       block: Add bio_add_folio()
>       block: Add bio_for_each_folio_all()
>       fs/buffer: Convert __block_write_begin_int() to take a folio
>       iomap: Convert to_iomap_page to take a folio
>       iomap: Convert iomap_page_create to take a folio
>       iomap: Convert iomap_page_release to take a folio
>       iomap: Convert iomap_releasepage to use a folio
>       iomap: Add iomap_invalidate_folio
>       iomap: Pass the iomap_page into iomap_set_range_uptodate
>       iomap: Convert bio completions to use folios
>       iomap: Use folio offsets instead of page offsets
>       iomap: Convert iomap_read_inline_data to take a folio
>       iomap: Convert readahead and readpage to use a folio
>       iomap: Convert iomap_page_mkwrite to use a folio
>       iomap: Convert __iomap_zero_iter to use a folio
>       iomap: Convert iomap_write_begin() and iomap_write_end() to folios
>       iomap: Convert iomap_write_end_inline to take a folio
>       iomap,xfs: Convert ->discard_page to ->discard_folio
>       iomap: Simplify iomap_writepage_map()
>       iomap: Simplify iomap_do_writepage()
>       iomap: Convert iomap_add_to_ioend() to take a folio
>       iomap: Convert iomap_migrate_page() to use folios
>       iomap: Support large folios in invalidatepage
>       xfs: Support large folios
> 
>  Documentation/core-api/kernel-api.rst |   1 +
>  block/bio.c                           |  22 ++
>  fs/buffer.c                           |  23 +-
>  fs/internal.h                         |   2 +-
>  fs/iomap/buffered-io.c                | 506 +++++++++++++++++-----------------
>  fs/xfs/xfs_aops.c                     |  24 +-
>  fs/xfs/xfs_icache.c                   |   2 +
>  include/linux/bio.h                   |  56 +++-
>  include/linux/iomap.h                 |   3 +-
>  9 files changed, 363 insertions(+), 276 deletions(-)
>