diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_ag.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_ag.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_ag.h b/fs/xfs/libxfs/xfs_ag.h index 1132cda9a92f..77640f1409fd 100644 --- a/fs/xfs/libxfs/xfs_ag.h +++ b/fs/xfs/libxfs/xfs_ag.h @@ -67,6 +67,10 @@ struct xfs_perag { /* for rcu-safe freeing */ struct rcu_head rcu_head; + /* Precalculated geometry info */ + xfs_agblock_t block_count; + xfs_agblock_t min_block; + #ifdef __KERNEL__ /* -- kernel only structures below this line -- */ @@ -107,7 +111,7 @@ struct xfs_perag { }; int xfs_initialize_perag(struct xfs_mount *mp, xfs_agnumber_t agcount, - xfs_agnumber_t *maxagi); + xfs_rfsblock_t dcount, xfs_agnumber_t *maxagi); int xfs_initialize_perag_data(struct xfs_mount *mp, xfs_agnumber_t agno); void xfs_free_perag(struct xfs_mount *mp); @@ -117,6 +121,21 @@ struct xfs_perag *xfs_perag_get_tag(struct xfs_mount *mp, xfs_agnumber_t agno, void xfs_perag_put(struct xfs_perag *pag); /* + * Per-ag geometry infomation and validation + */ +xfs_agblock_t xfs_ag_block_count(struct xfs_mount *mp, xfs_agnumber_t agno); + +static inline bool +xfs_verify_agbno(struct xfs_perag *pag, xfs_agblock_t agbno) +{ + if (agbno >= pag->block_count) + return false; + if (agbno <= pag->min_block) + return false; + return true; +} + +/* * Perag iteration APIs */ static inline struct xfs_perag * |