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btrfs: use smaller type for btrfs_path lowest_level

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The level is 0..7, we can use smaller type. The size of btrfs_path is now
136 bytes from 144, which is +2 objects that fit into a 4k slab.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2015-11-27 16:31:42 +01:00
parent dccabfad20
commit 7853f15b2a
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/ctree.h
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@ -598,7 +598,7 @@ struct btrfs_path {
int locks[BTRFS_MAX_LEVEL];
u8 reada;
/* keep some upper locks as we walk down */
int lowest_level;
u8 lowest_level;
/*
* set by btrfs_split_item, tells search_slot to keep all locks