Re: [PATCH v5 00/18] btrfs: add read-only support for subpage sector size

On Tue, Jan 26, 2021 at 04:33:44PM +0800, Qu Wenruo wrote:

Qu Wenruo (18):
  btrfs: merge PAGE_CLEAR_DIRTY and PAGE_SET_WRITEBACK to
    PAGE_START_WRITEBACK
  btrfs: set UNMAPPED bit early in btrfs_clone_extent_buffer() for
    subpage support
  btrfs: introduce the skeleton of btrfs_subpage structure
  btrfs: make attach_extent_buffer_page() handle subpage case
  btrfs: make grab_extent_buffer_from_page() handle subpage case
  btrfs: support subpage for extent buffer page release
  btrfs: attach private to dummy extent buffer pages
  btrfs: introduce helpers for subpage uptodate status
  btrfs: introduce helpers for subpage error status
  btrfs: support subpage in set/clear_extent_buffer_uptodate()
  btrfs: support subpage in btrfs_clone_extent_buffer
  btrfs: support subpage in try_release_extent_buffer()
  btrfs: introduce read_extent_buffer_subpage()
  btrfs: support subpage in endio_readpage_update_page_status()
  btrfs: introduce subpage metadata validation check
  btrfs: introduce btrfs_subpage for data inodes
  btrfs: integrate page status update for data read path into
    begin/end_page_read()
  btrfs: allow RO mount of 4K sector size fs on 64K page system

This is now in misc-next, with the replaced patch 17 sent recently,
thanks.