diff options
Diffstat (limited to 'fs/ocfs2/ocfs2.h')
| -rw-r--r-- | fs/ocfs2/ocfs2.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index 3749c32c2fc4..fa3c6d3f0bd2 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -408,6 +408,44 @@ static inline int ocfs2_supports_indexed_dirs(struct ocfs2_super *osb) return 0; } +static inline unsigned int ocfs2_link_max(struct ocfs2_super *osb) +{ + if (ocfs2_supports_indexed_dirs(osb)) + return OCFS2_DX_LINK_MAX; + return OCFS2_LINK_MAX; +} + +static inline unsigned int ocfs2_read_links_count(struct ocfs2_dinode *di) +{ + u32 nlink = le16_to_cpu(di->i_links_count); + u32 hi = le16_to_cpu(di->i_links_count_hi); + + if (di->i_dyn_features & cpu_to_le16(OCFS2_INDEXED_DIR_FL)) + nlink |= (hi << OCFS2_LINKS_HI_SHIFT); + + return nlink; +} + +static inline void ocfs2_set_links_count(struct ocfs2_dinode *di, u32 nlink) +{ + u16 lo, hi; + + lo = nlink; + hi = nlink >> OCFS2_LINKS_HI_SHIFT; + + di->i_links_count = cpu_to_le16(lo); + di->i_links_count_hi = cpu_to_le16(hi); +} + +static inline void ocfs2_add_links_count(struct ocfs2_dinode *di, int n) +{ + u32 links = ocfs2_read_links_count(di); + + links += n; + + ocfs2_set_links_count(di, links); +} + /* set / clear functions because cluster events can make these happen * in parallel so we want the transitions to be atomic. this also * means that any future flags osb_flags must be protected by spinlock |