btrfs: migrate to use folio private instead of page private
As a cleanup and preparation for future folio migration, this patch
would replace all page->private to folio version. This includes:
- PagePrivate()
-> folio_test_private()
- page->private
-> folio_get_private()
- attach_page_private()
-> folio_attach_private()
- detach_page_private()
-> folio_detach_private()
Since we're here, also remove the forced cast on page->private, since
it's (void *) already, we don't really need to do the cast.
For now even if we missed some call sites, it won't cause any problem
yet, as we're only using order 0 folio (single page), thus all those
folio/page flags should be synced.
But for the future conversion to utilize higher order folio, the page
<-> folio flag sync is no longer guaranteed, thus we have to migrate to
utilize folio flags.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
5 files changed
