btrfs: introduce helpers for subpage error status

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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.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Qu Wenruo 2021-01-26 16:33:53 +08:00 • committed by David Sterba

parent a1d767c11c

commit 03a816b32b

2 changed files with 31 additions and 0 deletions

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29

fs/btrfs/subpage.c

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2

fs/btrfs/subpage.h

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