diff options
Diffstat (limited to 'fs/xfs/xfs_zone_gc.c')
| -rw-r--r-- | fs/xfs/xfs_zone_gc.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/fs/xfs/xfs_zone_gc.c b/fs/xfs/xfs_zone_gc.c index c5136ea9bb1d..81c94dd1d596 100644 --- a/fs/xfs/xfs_zone_gc.c +++ b/fs/xfs/xfs_zone_gc.c @@ -162,18 +162,36 @@ struct xfs_zone_gc_data { /* * We aim to keep enough zones free in stock to fully use the open zone limit - * for data placement purposes. + * for data placement purposes. Additionally, the m_zonegc_low_space tunable + * can be set to make sure a fraction of the unused blocks are available for + * writing. */ bool xfs_zoned_need_gc( struct xfs_mount *mp) { + s64 available, free, threshold; + s32 remainder; + if (!xfs_group_marked(mp, XG_TYPE_RTG, XFS_RTG_RECLAIMABLE)) return false; - if (xfs_estimate_freecounter(mp, XC_FREE_RTAVAILABLE) < + + available = xfs_estimate_freecounter(mp, XC_FREE_RTAVAILABLE); + + if (available < mp->m_groups[XG_TYPE_RTG].blocks * (mp->m_max_open_zones - XFS_OPEN_GC_ZONES)) return true; + + free = xfs_estimate_freecounter(mp, XC_FREE_RTEXTENTS); + + threshold = div_s64_rem(free, 100, &remainder); + threshold = threshold * mp->m_zonegc_low_space + + remainder * div_s64(mp->m_zonegc_low_space, 100); + + if (available < threshold) + return true; + return false; } |