Re: [f2fs-dev] [PATCH v4 00/18] f2fs: support & optimize large folios for writable files

[Jaegeuk Kim <jaegeuk@kernel.org>]

Hi Nanzhe,

Could you please rebase your patches on top of dev-test?

https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git/log/?h=dev-test

Note, I applied [0] and [1] already.

On 10/13, Nanzhe Zhao wrote:
> From: Nanzhe Zhao <zhaonanzhe@xiaomi.com>
> 
> This series supports large folios for most readable/writable files
> in buffered I/O paths, including normal files, block-layer encrypted
> files, and atomic files except for inline-data files, compressed files,
> and quota files.
> 
> It also extends f2fs_folio_state to coexist with f2fs page-private
> flags and to handle large folio write path and partial truncate of
> large folios correctly.
> 
> Benchmark details can be found in the RFC v2 cover letter [1].
> 
> Changes in v4:
> - Rebased onto linux-next next-20261012 (4eb2586bd40d); its f2fs part
>   is the f2fs dev branch.
> - Added "f2fs: read i_size once in f2fs_vm_page_mkwrite" as a
>   prerequisite (also sent separately).
> - "f2fs: remove mappedtodisk flag usage in mmap write path" is kept as
>   a prerequisite.
> - Link to v3: [2]
> 
> Patches 1 and 2 are prerequisites for the large folio work. They are
> also posted independently as bug fixes, and are kept in this series to
> make it self-contained for the sashiko review.
> 
> Many thanks to Chao and Daeho for your extensive reviews and valuable
> suggestions!
> 
> [1] https://lore.kernel.org/r/20260622160830.324455-1-zhaonanzhe@xiaomi.com
> [2] https://lore.kernel.org/linux-f2fs-devel/20261009161224.4163796-1-zhaonanzhe@xiaomi.com/
> 
> Nanzhe Zhao (18):
>   f2fs: read i_size once in f2fs_vm_page_mkwrite
>   f2fs: remove mappedtodisk flag usage in mmap write path
>   f2fs: extend folio state for large folio write path
>   f2fs: carry subpage offset and count in write IO
>   f2fs: support regular file buffered writes on large folios
>   f2fs: support atomic file large folios buffered write
>   f2fs: support large folio writeback
>   f2fs: account large folio dirty data at block granularity
>   f2fs: prepare mmap write faults for large folios
>   f2fs: make GC migration large-folio aware
>   f2fs: optimize small block size large folio read
>   f2fs: support partial uptodate large folio read
>   f2fs: handle partial truncate of large folio dirty subpages
>   f2fs: wait for folio writeback before ffs_detach_free
>   f2fs: fix zeroing paths for large folios
>   f2fs: handle block cloning within the same large folio
>   f2fs: allow large folio support to writeable files
>   f2fs: make compressed files compatible with large folio
> 
>  Documentation/filesystems/f2fs.rst |   10 +
>  fs/f2fs/checkpoint.c               |   40 +-
>  fs/f2fs/compress.c                 |    7 +-
>  fs/f2fs/data.c                     | 1425 +++++++++++++++++++++++++---
>  fs/f2fs/dir.c                      |    2 +-
>  fs/f2fs/f2fs.h                     |  173 +++-
>  fs/f2fs/file.c                     |  252 +++--
>  fs/f2fs/gc.c                       |   38 +-
>  fs/f2fs/inline.c                   |    9 +-
>  fs/f2fs/inode.c                    |    4 +-
>  fs/f2fs/namei.c                    |    1 +
>  fs/f2fs/node.c                     |    2 +-
>  fs/f2fs/segment.c                  |    3 +-
>  13 files changed, 1706 insertions(+), 260 deletions(-)
> 
> -- 
> 2.43.0
> 
> 
> 
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