btrfs: scrub: support subpage tree block scrub

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To support subpage tree block scrub, scrub_checksum_tree_block() only
needs to learn 2 new tricks:

- Follow sector size
  Now scrub_page only represents one sector, we need to follow it
  properly.

- Run checksum on all sectors
  Since scrub_page only represents one sector, we need to run checksum
  on all sectors, not only (nodesize >> PAGE_SIZE).

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 2020-12-02 14:48:09 +08:00 • committed by David Sterba

parent d0a7a9c050

commit 53f3251d3b

1 changed files with 14 additions and 4 deletions

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fs/btrfs/scrub.c

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