Fix zfs_dirty_data_sync_percent documentation

In dfbe2675 zfs_dirty_data_sync was changed to a new tunable named
zfs_dirty_data_sync_percent. Unfortunately, the module parameter
documentation is the code was not updated accordingly. This patch
simply corrects that.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #8212

diff --git a/module/zfs/dsl_pool.c b/module/zfs/dsl_pool.c
index b940382d1f912274f0977d2901cf21a3af96ca2b..e159a5d1b377a2d80a1c75be0d4aa1e0695c140b 100644 (file)
--- a/module/zfs/dsl_pool.c
+++ b/module/zfs/dsl_pool.c
@@ -83,7 +83,7 @@
  * zfs_dirty_data_max determines the dirty space limit. Once that value is
  * exceeded, new writes are halted until space frees up.
  *
- * The zfs_dirty_data_sync tunable dictates the threshold at which we
+ * The zfs_dirty_data_sync_percent tunable dictates the threshold at which we
  * ensure that there is a txg syncing (see the comment in txg.c for a full
  * description of transaction group stages).
  *
@@ -1350,7 +1350,8 @@ MODULE_PARM_DESC(zfs_dirty_data_max_max,
        "zfs_dirty_data_max upper bound in bytes");
 
 module_param(zfs_dirty_data_sync_percent, int, 0644);
-MODULE_PARM_DESC(zfs_dirty_data_sync, "sync txg when this much dirty data");
+MODULE_PARM_DESC(zfs_dirty_data_sync_percent,
+       "dirty data txg sync threshold as a percentage of zfs_dirty_data_max");
 
 module_param(zfs_delay_scale, ulong, 0644);
 MODULE_PARM_DESC(zfs_delay_scale, "how quickly delay approaches infinity");