diff options
Diffstat (limited to 'libbcachefs/inode.h')
| -rw-r--r-- | libbcachefs/inode.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/libbcachefs/inode.h b/libbcachefs/inode.h index af0c355f..e88ec780 100644 --- a/libbcachefs/inode.h +++ b/libbcachefs/inode.h @@ -103,6 +103,49 @@ static inline u64 bch2_inode_opt_get(struct bch_inode_unpacked *inode, } } +/* i_nlink: */ + +static inline unsigned nlink_bias(umode_t mode) +{ + return S_ISDIR(mode) ? 2 : 1; +} + +static inline void bch2_inode_nlink_inc(struct bch_inode_unpacked *bi) +{ + if (bi->bi_flags & BCH_INODE_UNLINKED) + bi->bi_flags &= ~BCH_INODE_UNLINKED; + else + bi->bi_nlink++; +} + +static inline void bch2_inode_nlink_dec(struct bch_inode_unpacked *bi) +{ + BUG_ON(bi->bi_flags & BCH_INODE_UNLINKED); + if (bi->bi_nlink) + bi->bi_nlink--; + else + bi->bi_flags |= BCH_INODE_UNLINKED; +} + +static inline unsigned bch2_inode_nlink_get(struct bch_inode_unpacked *bi) +{ + return bi->bi_flags & BCH_INODE_UNLINKED + ? 0 + : bi->bi_nlink + nlink_bias(bi->bi_mode); +} + +static inline void bch2_inode_nlink_set(struct bch_inode_unpacked *bi, + unsigned nlink) +{ + if (nlink) { + bi->bi_nlink = nlink - nlink_bias(bi->bi_mode); + bi->bi_flags &= ~BCH_INODE_UNLINKED; + } else { + bi->bi_nlink = 0; + bi->bi_flags |= BCH_INODE_UNLINKED; + } +} + #ifdef CONFIG_BCACHEFS_DEBUG void bch2_inode_pack_test(void); #else |