On Wed, Apr 03, 2019 at 07:59:19PM +0800, Qu Wenruo wrote:
> Commit 1ba98d086fe3 ("Btrfs: detect corruption when non-root leaf has
> zero item") introduced comprehensive root owner checker.That's 4.7, so we might want to do stable backport to 4.9+. > > However it's pretty expensive tree search to locate the owner root, > especially when it get reused by mandatory read and write time > tree-checker. > > This patch will remove that check, and completely rely on owner based > empty leaf check, which is much faster and still works fine for most > case. > > And since we skip the old root owner check, now write time tree check > can be merged with btrfs_check_leaf_full(). And for that reason the change should be minimal, this patch depends on current development queue so it's not suitable for the backport. I'm thinking what to do here, I want to avoid patches that effectively revert changes that are still in the development branch and haven't been released. This means to rework "btrfs: Do mandatory tree block check before submitting bio", though it's deep in the branch, the scope of changes is only 2 files so this should not cause any conflicts.
