diff options
Diffstat (limited to 'fs/ocfs2/ocfs2.h')
| -rw-r--r-- | fs/ocfs2/ocfs2.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index fa3c6d3f0bd..e1844d5736c 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -582,6 +582,16 @@ static inline u64 ocfs2_clusters_to_bytes(struct super_block *sb, return (u64)clusters << OCFS2_SB(sb)->s_clustersize_bits; } +static inline u64 ocfs2_block_to_cluster_start(struct super_block *sb, + u64 blocks) +{ + int bits = OCFS2_SB(sb)->s_clustersize_bits - sb->s_blocksize_bits; + unsigned int clusters; + + clusters = ocfs2_blocks_to_clusters(sb, blocks); + return (u64)clusters << bits; +} + static inline u64 ocfs2_align_bytes_to_clusters(struct super_block *sb, u64 bytes) { |