Merge patch series "allow file systems to increase the minimum writeback chunk size v2"

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Christoph Hellwig <hch@lst.de> says:

The relatively low minimal writeback size of 4MiB leads means that
written back inodes on rotational media are switched a lot.  Besides
introducing additional seeks, this also can lead to extreme file
fragmentation on zoned devices when a lot of files are cached relative
to the available writeback bandwidth.

Add a superblock field that allows the file system to override the
default size, and set it to the zone size for zoned XFS.

* patches from https://patch.msgid.link/20251017034611.651385-1-hch@lst.de:
  xfs: set s_min_writeback_pages for zoned file systems
  writeback: allow the file system to override MIN_WRITEBACK_PAGES
  writeback: cleanup writeback_chunk_size

Link: https://patch.msgid.link/20251017034611.651385-1-hch@lst.de
Signed-off-by: Christian Brauner <brauner@kernel.org>

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Christian Brauner 2025-10-29 15:54:36 +01:00

parent 211c43d093 015a544077

commit 891bea757c

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GPG key ID: 91C61BC06578DCA2

5 changed files with 42 additions and 19 deletions

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26

fs/fs-writeback.c

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1

fs/super.c

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28

fs/xfs/xfs_zone_alloc.c

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1

include/linux/fs.h

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5

include/linux/writeback.h

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