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btrfs: add wrapper for transaction abort predicate

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The status of aborted transaction can change between calls and it needs
to be accessed by READ_ONCE. Add a helper that also wraps the unlikely
hint.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2020-02-05 17:34:34 +01:00
commit bf31f87f71
6 changed files with 33 additions and 20 deletions
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