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Diffstat (limited to 'fs/xfs/xfs_zone_gc.c')
-rw-r--r--fs/xfs/xfs_zone_gc.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/fs/xfs/xfs_zone_gc.c b/fs/xfs/xfs_zone_gc.c
index c5136ea9bb1d..8c541ca71872 100644
--- a/fs/xfs/xfs_zone_gc.c
+++ b/fs/xfs/xfs_zone_gc.c
@@ -162,18 +162,30 @@ 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;
+
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);
+ if (available < mult_frac(free, mp->m_zonegc_low_space, 100))
+ return true;
+
return false;
}