On 1/26/21 3:33 AM, Qu Wenruo wrote:

Introduce the following functions to handle subpage error status:

- btrfs_subpage_set_error()
- btrfs_subpage_clear_error()
- btrfs_subpage_test_error()
   These helpers can only be called when the page has subpage attached
   and the range is ensured to be inside the page.

- btrfs_page_set_error()
- btrfs_page_clear_error()
- btrfs_page_test_error()
   These helpers can handle both regular sector size and subpage without
   problem.

Signed-off-by: Qu Wenruo <redacted>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

Reviewed-by: Josef Bacik <josef@toxicpanda.com>

Thanks,

Josef