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| author | Qu Wenruo <wqu@suse.com> | 2020-03-03 13:24:06 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-05-25 11:25:20 +0200 |
| commit | f39911e5527e8be7ab56cadde306237092bcc78f (patch) | |
| tree | b2a2dbe670cd5ea673d58feb070395e099dbaae0 /fs/btrfs/backref.h | |
| parent | 47254d07f37590fddc1516006e3e79453e755424 (diff) | |
btrfs: backref: rename and move link_backref_edge()
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/backref.h')
| -rw-r--r-- | fs/btrfs/backref.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h index 4f140a0ebe1c..01c559543133 100644 --- a/fs/btrfs/backref.h +++ b/fs/btrfs/backref.h @@ -275,4 +275,20 @@ struct btrfs_backref_node *btrfs_backref_alloc_node( struct btrfs_backref_edge *btrfs_backref_alloc_edge( struct btrfs_backref_cache *cache); +#define LINK_LOWER (1 << 0) +#define LINK_UPPER (1 << 1) +static inline void btrfs_backref_link_edge(struct btrfs_backref_edge *edge, + struct btrfs_backref_node *lower, + struct btrfs_backref_node *upper, + int link_which) +{ + ASSERT(upper && lower && upper->level == lower->level + 1); + edge->node[LOWER] = lower; + edge->node[UPPER] = upper; + if (link_which & LINK_LOWER) + list_add_tail(&edge->list[LOWER], &lower->upper); + if (link_which & LINK_UPPER) + list_add_tail(&edge->list[UPPER], &upper->lower); +} + #endif |