diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_ag.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_ag.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_ag.h b/fs/xfs/libxfs/xfs_ag.h index 77640f1409fd..bb9e91bd38e2 100644 --- a/fs/xfs/libxfs/xfs_ag.h +++ b/fs/xfs/libxfs/xfs_ag.h @@ -70,6 +70,8 @@ struct xfs_perag { /* Precalculated geometry info */ xfs_agblock_t block_count; xfs_agblock_t min_block; + xfs_agino_t agino_min; + xfs_agino_t agino_max; #ifdef __KERNEL__ /* -- kernel only structures below this line -- */ @@ -124,6 +126,8 @@ 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); +void xfs_agino_range(struct xfs_mount *mp, xfs_agnumber_t agno, + xfs_agino_t *first, xfs_agino_t *last); static inline bool xfs_verify_agbno(struct xfs_perag *pag, xfs_agblock_t agbno) @@ -136,6 +140,32 @@ xfs_verify_agbno(struct xfs_perag *pag, xfs_agblock_t agbno) } /* + * Verify that an AG inode number pointer neither points outside the AG + * nor points at static metadata. + */ +static inline bool +xfs_verify_agino(struct xfs_perag *pag, xfs_agino_t agino) +{ + if (agino < pag->agino_min) + return false; + if (agino > pag->agino_max) + return false; + return true; +} + +/* + * Verify that an AG inode number pointer neither points outside the AG + * nor points at static metadata, or is NULLAGINO. + */ +static inline bool +xfs_verify_agino_or_null(struct xfs_perag *pag, xfs_agino_t agino) +{ + if (agino == NULLAGINO) + return true; + return xfs_verify_agino(pag, agino); +} + +/* * Perag iteration APIs */ static inline struct xfs_perag * |