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

[Jaegeuk Kim]

On 10/14, Chao Yu wrote:
> Hi Jaegeuk,
> 
> On 10/14/26 02:46, Jaegeuk Kim wrote:
> > Hi Nanzhe,
> > 
> > Could you please rebase your patches on top of dev-test?
> 
> Nanzhe rebased the patchset to linux-next, so sashiko can apply & review
> the patchset as expected.
> 
> The gap here is two missing cleanup patches from Zi Yan, please apply them
> into dev-test before applying Nanzhe's one, since it's dev-test, it won't
> cause any conflict w/ linux-next.
> 
> "f2fs: stop using PG_private"
> "f2fs: reject device aliasing without a multi-device configuration"
> 
> See https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/log/?h=feature/large_folio

Per offline sync, they're going to go through MM tree. Please rebase on f2fs tree.

> 
> Thanks,
> 
> > 
> > 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@xxxxxxxxxx>
> >>
> >> 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@xxxxxxxxxx
> >> [2] https://lore.kernel.org/linux-f2fs-devel/20261009161224.4163796-1-zhaonanzhe@xxxxxxxxxx/
> >>
> >> 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
> >>
> >>
> >>
> >> _______________________________________________
> >> Linux-f2fs-devel mailing list
> >> Linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx
> >> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
>