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btrfs: stop running all delayed refs during snapshot

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This was added in commit 361048f586 ("Btrfs: fix full backref problem
when inserting shared block reference") to address a problem where we
hit the following BUG_ON() in alloc_reserved_tree_block

        if (node->type == BTRFS_SHARED_BLOCK_REF_KEY) {
                BUG_ON(!(flags & BTRFS_BLOCK_FLAG_FULL_BACKREF));

However this BUG_ON() is bogus, and was removed by previous commit:

  btrfs: remove bogus BUG_ON in alloc_reserved_tree_block

We no longer need to run delayed refs because of this, and can remove
this flushing here.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2020-12-18 14:24:25 -05:00 • committed by David Sterba
commit dac348e925
1 changed files with 0 additions and 6 deletions
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