btrfs: use smaller type for btrfs_path reada
The possible values for reada are all positive and bounded, we can later save some bytes by storing it in u8. Signed-off-by: David Sterba <dsterba@suse.com>
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@ -596,7 +596,7 @@ struct btrfs_path {
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int slots[BTRFS_MAX_LEVEL];
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/* if there is real range locking, this locks field will change */
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int locks[BTRFS_MAX_LEVEL];
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int reada;
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u8 reada;
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/* keep some upper locks as we walk down */
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int lowest_level;
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