Re: remove iomap_writepage v2

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On Mon, Aug 01, 2022 at 11:31:50AM -0400, Johannes Weiner wrote:
> XFS hasn't had a ->writepage call for a while. After LSF I internally
> tested dropping btrfs' callback, and the results looked good: no OOM
> kills with dirty/writeback pages remaining, performance parity. Then I
> went on vacation and Christoph beat me to the patch :)

To avoid duplicating work with you or Christoph ... it seems like the
plan is to kill ->writepage entirely soon, so there's no point in me
doing a sweep of all the filesystems to convert ->writepage to
->write_folio, correct?

I assume the plan for filesystems which have a writepage but don't have
a ->writepages (9p, adfs, affs, bfs, ecryptfs, gfs2, hostfs, jfs, minix,
nilfs2, ntfs, ocfs2, reiserfs, sysv, ubifs, udf, ufs, vboxsf) is to give
them a writepages, modelled on iomap_writepages().  Seems that adding
a block_writepages() might be a useful thing for me to do?





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