diff options
Diffstat (limited to 'fs/xfs/xfs_da_format.c')
| -rw-r--r-- | fs/xfs/xfs_da_format.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/fs/xfs/xfs_da_format.c b/fs/xfs/xfs_da_format.c index b232c275791d..01e6f9a9b804 100644 --- a/fs/xfs/xfs_da_format.c +++ b/fs/xfs/xfs_da_format.c @@ -629,6 +629,80 @@ xfs_da3_node_hdr_to_disk( /* * Directory free space block operations */ +static int +xfs_dir2_free_hdr_size(void) +{ + return sizeof(struct xfs_dir2_free_hdr); +} + +static int +xfs_dir2_free_max_bests(struct xfs_mount *mp) +{ + return (mp->m_dirblksize - xfs_dir2_free_hdr_size()) / + sizeof(xfs_dir2_data_off_t); +} + +static __be16 * +xfs_dir2_free_bests_p(struct xfs_dir2_free *free) +{ + return (__be16 *)((char *)free + xfs_dir2_free_hdr_size()); +} + +/* + * Convert data space db to the corresponding free db. + */ +static xfs_dir2_db_t +xfs_dir2_db_to_fdb(struct xfs_mount *mp, xfs_dir2_db_t db) +{ + return XFS_DIR2_FREE_FIRSTDB(mp) + db / xfs_dir2_free_max_bests(mp); +} + +/* + * Convert data space db to the corresponding index in a free db. + */ +static int +xfs_dir2_db_to_fdindex(struct xfs_mount *mp, xfs_dir2_db_t db) +{ + return db % xfs_dir2_free_max_bests(mp); +} + +static int +xfs_dir3_free_hdr_size(void) +{ + return sizeof(struct xfs_dir3_free_hdr); +} + +static int +xfs_dir3_free_max_bests(struct xfs_mount *mp) +{ + return (mp->m_dirblksize - xfs_dir3_free_hdr_size()) / + sizeof(xfs_dir2_data_off_t); +} + +static __be16 * +xfs_dir3_free_bests_p(struct xfs_dir2_free *free) +{ + return (__be16 *)((char *)free + xfs_dir3_free_hdr_size()); +} + +/* + * Convert data space db to the corresponding free db. + */ +static xfs_dir2_db_t +xfs_dir3_db_to_fdb(struct xfs_mount *mp, xfs_dir2_db_t db) +{ + return XFS_DIR2_FREE_FIRSTDB(mp) + db / xfs_dir3_free_max_bests(mp); +} + +/* + * Convert data space db to the corresponding index in a free db. + */ +static int +xfs_dir3_db_to_fdindex(struct xfs_mount *mp, xfs_dir2_db_t db) +{ + return db % xfs_dir3_free_max_bests(mp); +} + static void xfs_dir2_free_hdr_from_disk( struct xfs_dir3_icfree_hdr *to, @@ -722,8 +796,13 @@ const struct xfs_dir_ops xfs_dir2_ops = { .node_hdr_from_disk = xfs_da2_node_hdr_from_disk, .node_tree_p = xfs_da2_node_tree_p, + .free_hdr_size = xfs_dir2_free_hdr_size, .free_hdr_to_disk = xfs_dir2_free_hdr_to_disk, .free_hdr_from_disk = xfs_dir2_free_hdr_from_disk, + .free_max_bests = xfs_dir2_free_max_bests, + .free_bests_p = xfs_dir2_free_bests_p, + .db_to_fdb = xfs_dir2_db_to_fdb, + .db_to_fdindex = xfs_dir2_db_to_fdindex, }; const struct xfs_dir_ops xfs_dir2_ftype_ops = { @@ -764,8 +843,13 @@ const struct xfs_dir_ops xfs_dir2_ftype_ops = { .node_hdr_from_disk = xfs_da2_node_hdr_from_disk, .node_tree_p = xfs_da2_node_tree_p, + .free_hdr_size = xfs_dir2_free_hdr_size, .free_hdr_to_disk = xfs_dir2_free_hdr_to_disk, .free_hdr_from_disk = xfs_dir2_free_hdr_from_disk, + .free_max_bests = xfs_dir2_free_max_bests, + .free_bests_p = xfs_dir2_free_bests_p, + .db_to_fdb = xfs_dir2_db_to_fdb, + .db_to_fdindex = xfs_dir2_db_to_fdindex, }; const struct xfs_dir_ops xfs_dir3_ops = { @@ -806,8 +890,13 @@ const struct xfs_dir_ops xfs_dir3_ops = { .node_hdr_from_disk = xfs_da3_node_hdr_from_disk, .node_tree_p = xfs_da3_node_tree_p, + .free_hdr_size = xfs_dir3_free_hdr_size, .free_hdr_to_disk = xfs_dir3_free_hdr_to_disk, .free_hdr_from_disk = xfs_dir3_free_hdr_from_disk, + .free_max_bests = xfs_dir3_free_max_bests, + .free_bests_p = xfs_dir3_free_bests_p, + .db_to_fdb = xfs_dir3_db_to_fdb, + .db_to_fdindex = xfs_dir3_db_to_fdindex, }; const struct xfs_dir_ops xfs_dir2_nondir_ops = { |
