[v2,0/3] btrfs: enhance function extent_range_clear_dirty_for_io()

Message

Qu Wenruo May 22, 2024, 11:47 p.m. UTC

[Changelog]
v2:
- Split the original patch into 3

- Return the error from filemap_get_folio() to be future-proof

- Enhance the comments for the new ASSERT() on
  extent_range_clear_dirty_for_io() error
  In fact, even if some pages are missing, we do not need to handle the
  error at compress_file_range(), as btrfs_compress_folios() and each
  compression routine would handle the missing folio correctly.

  Thus the new ASSERT() is only an early warning for developers.

This is a preparation for the (near) future support of sector perfect
subpage compression support. (the current one requires full page
alignment).

The function extent_range_clear_dirty_for_io() is just a simple start.

Qu Wenruo (3):
  btrfs: move extent_range_clear_dirty_for_io() into inode.c
  btrfs: make extent_range_clear_dirty_for_io() subpage compatible
  btrfs: remove the BUG_ON() inside extent_range_clear_dirty_for_io()

 fs/btrfs/extent_io.c | 15 ---------------
 fs/btrfs/extent_io.h |  1 -
 fs/btrfs/inode.c     | 36 +++++++++++++++++++++++++++++++++++-
 3 files changed, 35 insertions(+), 17 deletions(-)