diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_ag.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_ag.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_ag.c b/fs/xfs/libxfs/xfs_ag.c index 9c6765cc2d44..bd8fbb40b49e 100644 --- a/fs/xfs/libxfs/xfs_ag.c +++ b/fs/xfs/libxfs/xfs_ag.c @@ -872,6 +872,34 @@ resv_err: return err2; } +void +xfs_growfs_compute_deltas( + struct xfs_mount *mp, + xfs_rfsblock_t nb, + int64_t *deltap, + xfs_agnumber_t *nagcountp) +{ + xfs_rfsblock_t nb_div, nb_mod; + int64_t delta; + xfs_agnumber_t nagcount; + + nb_div = nb; + nb_mod = do_div(nb_div, mp->m_sb.sb_agblocks); + if (nb_mod && nb_mod >= XFS_MIN_AG_BLOCKS) + nb_div++; + else if (nb_mod) + nb = nb_div * mp->m_sb.sb_agblocks; + + if (nb_div > XFS_MAX_AGNUMBER + 1) { + nb_div = XFS_MAX_AGNUMBER + 1; + nb = nb_div * mp->m_sb.sb_agblocks; + } + nagcount = nb_div; + delta = nb - mp->m_sb.sb_dblocks; + *deltap = delta; + *nagcountp = nagcount; +} + /* * Extent the AG indicated by the @id by the length passed in */ |