diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_ag.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_ag.c | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_ag.c b/fs/xfs/libxfs/xfs_ag.c index 1fa172501b3d..8f3e6ee85c34 100644 --- a/fs/xfs/libxfs/xfs_ag.c +++ b/fs/xfs/libxfs/xfs_ag.c @@ -201,10 +201,35 @@ xfs_free_perag( } } +/* Find the size of the AG, in blocks. */ +static xfs_agblock_t +__xfs_ag_block_count( + struct xfs_mount *mp, + xfs_agnumber_t agno, + xfs_agnumber_t agcount, + xfs_rfsblock_t dblocks) +{ + ASSERT(agno < agcount); + + if (agno < agcount - 1) + return mp->m_sb.sb_agblocks; + return dblocks - (agno * mp->m_sb.sb_agblocks); +} + +xfs_agblock_t +xfs_ag_block_count( + struct xfs_mount *mp, + xfs_agnumber_t agno) +{ + return __xfs_ag_block_count(mp, agno, mp->m_sb.sb_agcount, + mp->m_sb.sb_dblocks); +} + int xfs_initialize_perag( struct xfs_mount *mp, xfs_agnumber_t agcount, + xfs_rfsblock_t dblocks, xfs_agnumber_t *maxagi) { struct xfs_perag *pag; @@ -270,6 +295,13 @@ xfs_initialize_perag( /* first new pag is fully initialized */ if (first_initialised == NULLAGNUMBER) first_initialised = index; + + /* + * Pre-calculated geometry + */ + pag->block_count = __xfs_ag_block_count(mp, index, agcount, + dblocks); + pag->min_block = XFS_AGFL_BLOCK(mp); } index = xfs_set_inode_alloc(mp, agcount); @@ -927,10 +959,16 @@ xfs_ag_extend_space( if (error) return error; - return xfs_free_extent(tp, XFS_AGB_TO_FSB(pag->pag_mount, pag->pag_agno, + error = xfs_free_extent(tp, XFS_AGB_TO_FSB(pag->pag_mount, pag->pag_agno, be32_to_cpu(agf->agf_length) - len), len, &XFS_RMAP_OINFO_SKIP_UPDATE, XFS_AG_RESV_NONE); + if (error) + return error; + + /* Update perag geometry */ + pag->block_count = be32_to_cpu(agf->agf_length); + return 0; } /* Retrieve AG geometry. */ |