[PATCH v2 0/4] Avoid filesystem references to writeback internals

[Kundan Kumar <kundan.kumar@samsung.com>]

The series introduces writeback helper APIs and converts f2fs, gfs2
and nfs to stop accessing writeback internals directly.

As suggested by Christoph [1], filesystem code that directly accesses
writeback internals is split out:
[1] https://lore.kernel.org/all/20251015072912.GA11294@lst.de/

No functional changes intended.

Changes since v1:
1) Added comment indicating that these functions shall not be used by
   filesystems that support cgroup writeback. (Christoph)
2) Pass inode instead of bdi for modifying writeback accounting stats,
   will make it easier to select proper wb context for the upcoming
   parallel writeback patches. (hence dropped the previous reviewed-bys
   for patch 4)

Kundan Kumar (4):
  writeback: prep helpers for dirty-limit and writeback accounting
  f2fs: stop using writeback internals for dirty_exceeded checks
  gfs2: stop using writeback internals for dirty_exceeded check
  nfs: stop using writeback internals for WB_WRITEBACK accounting

 fs/f2fs/node.c              |  4 ++--
 fs/f2fs/segment.h           |  2 +-
 fs/gfs2/super.c             |  2 +-
 fs/nfs/internal.h           |  2 +-
 fs/nfs/write.c              |  3 +--
 include/linux/backing-dev.h | 13 +++++++++++++
 6 files changed, 19 insertions(+), 7 deletions(-)


base-commit: 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b
-- 
2.25.1