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

[Chao Yu]

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

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
>>
>>
>>
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