btrfs: optimize balance_level() path reference handling

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Instead of incrementing refcount on 'left' node when it's referenced by
path, simply transfer ownership to path and set left to NULL. This
eliminates:

- Unnecessary refcount increment/decrement operations
- Redundant conditional checks for left node cleanup

The path now consistently owns the left node reference when used.

Signed-off-by: Sun YangKai <sunk67188@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Sun YangKai 2025-11-14 15:24:46 +08:00 • committed by David Sterba

parent 31b37b7667

commit 3afa17bf24

1 changed files with 3 additions and 3 deletions

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fs/btrfs/ctree.c

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