[PATCH v2 0/2] iomap: flush dirty cache over unwritten mappings on zero range

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Hi all,

Here's v2 of the iomap zero range flush fixes. No real changes here
other than a comment update to better explain a subtle corner case. The
latest version of corresponding test support is posted here [1].
Thoughts, reviews, flames appreciated.

Brian

[1] https://lore.kernel.org/fstests/20240828181534.41054-1-bfoster@xxxxxxxxxx/

v2:
- Update comment in patch 2 to explain hole case.
v1: https://lore.kernel.org/linux-fsdevel/20240822145910.188974-1-bfoster@xxxxxxxxxx/
- Alternative approach, flush instead of revalidate.
rfc: https://lore.kernel.org/linux-fsdevel/20240718130212.23905-1-bfoster@xxxxxxxxxx/

Brian Foster (2):
  iomap: fix handling of dirty folios over unwritten extents
  iomap: make zero range flush conditional on unwritten mappings

 fs/iomap/buffered-io.c | 57 +++++++++++++++++++++++++++++++++++++++---
 fs/xfs/xfs_iops.c      | 10 --------
 2 files changed, 53 insertions(+), 14 deletions(-)

-- 
2.45.0





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