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-rw-r--r--module/zfs/spa_misc.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/module/zfs/spa_misc.c b/module/zfs/spa_misc.c
index b3a4a7b12..f4497ca1c 100644
--- a/module/zfs/spa_misc.c
+++ b/module/zfs/spa_misc.c
@@ -2689,5 +2689,10 @@ MODULE_PARM_DESC(zfs_ddt_data_is_special,
module_param(zfs_user_indirect_is_special, int, 0644);
MODULE_PARM_DESC(zfs_user_indirect_is_special,
"Place user data indirect blocks into the special class");
+
+module_param(zfs_special_class_metadata_reserve_pct, int, 0644);
+MODULE_PARM_DESC(zfs_special_class_metadata_reserve_pct,
+ "Small file blocks in special vdevs depends on this much "
+ "free space available");
/* END CSTYLED */
#endif