diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_ag.c')
-rw-r--r-- | fs/xfs/libxfs/xfs_ag.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_ag.c b/fs/xfs/libxfs/xfs_ag.c index 69b138dffd92..208e82ec9dd6 100644 --- a/fs/xfs/libxfs/xfs_ag.c +++ b/fs/xfs/libxfs/xfs_ag.c @@ -544,6 +544,55 @@ xfs_ag_extend_space( XFS_AG_RESV_NONE); } +/* Compute the AG geometry flags. */ +static inline uint32_t +xfs_ag_calc_geoflags( + struct xfs_perag *pag) +{ + uint32_t ret = 0; + + if (pag->pagf_noalloc) + ret |= XFS_AG_FLAG_NOALLOC; + + return ret; +} + +/* + * Compare the current AG geometry flags against the flags in the AG geometry + * structure and update the AG state to reflect any changes, then update the + * struct to reflect the current status. + */ +static inline int +xfs_ag_update_geoflags( + struct xfs_perag *pag, + struct xfs_ag_geometry *ageo, + uint32_t new_flags) +{ + uint32_t old_flags = xfs_ag_calc_geoflags(pag); + int error; + + if (!(new_flags & XFS_AG_FLAG_UPDATE)) { + ageo->ag_flags = old_flags; + return 0; + } + + if ((old_flags & XFS_AG_FLAG_NOALLOC) && + !(new_flags & XFS_AG_FLAG_NOALLOC)) { + error = xfs_ag_clear_noalloc(pag); + if (error) + return error; + } + if (!(old_flags & XFS_AG_FLAG_NOALLOC) && + (new_flags & XFS_AG_FLAG_NOALLOC)) { + error = xfs_ag_set_noalloc(pag); + if (error) + return error; + } + + ageo->ag_flags = xfs_ag_calc_geoflags(pag); + return 0; +} + /* Retrieve AG geometry. */ int xfs_ag_get_geometry( @@ -557,6 +606,7 @@ xfs_ag_get_geometry( struct xfs_agf *agf; struct xfs_perag *pag; unsigned int freeblks; + uint32_t inflags = ageo->ag_flags; int error; if (agno >= mp->m_sb.sb_agcount) @@ -572,6 +622,10 @@ xfs_ag_get_geometry( pag = agi_bp->b_pag; + error = xfs_ag_update_geoflags(pag, ageo, inflags); + if (error) + goto out; + /* Fill out form. */ memset(ageo, 0, sizeof(*ageo)); ageo->ag_number = agno; @@ -589,6 +643,7 @@ xfs_ag_get_geometry( ageo->ag_freeblks = freeblks; xfs_ag_geom_health(pag, ageo); +out: /* Release resources. */ xfs_buf_relse(agf_bp); out_agi: |