Add missing arcstats

The following useful values were missing the arcstats.  This change
adds them in to provide greater visibility in to the arcs behavior.

arc_no_grow                     4    0
arc_tempreserve                 4    0
arc_loaned_bytes                4    0
arc_meta_used                   4    624774592
arc_meta_limit                  4    400785408
arc_meta_max                    4    625594176

1 files changed, 20 insertions, 8 deletions

diff --git a/module/zfs/arc.c b/module/zfs/arc.c
index 3a4573027..63b659b9a 100644
--- a/module/zfs/arc.c
+++ b/module/zfs/arc.c
@@ -282,6 +282,12 @@ typedef struct arc_stats {
 	kstat_named_t arcstat_l2_size;
 	kstat_named_t arcstat_l2_hdr_size;
 	kstat_named_t arcstat_memory_throttle_count;
+	kstat_named_t arcstat_no_grow;
+	kstat_named_t arcstat_tempreserve;
+	kstat_named_t arcstat_loaned_bytes;
+	kstat_named_t arcstat_meta_used;
+	kstat_named_t arcstat_meta_limit;
+	kstat_named_t arcstat_meta_max;
 } arc_stats_t;
 
 static arc_stats_t arc_stats = {
@@ -337,7 +343,13 @@ static arc_stats_t arc_stats = {
 	{ "l2_io_error",		KSTAT_DATA_UINT64 },
 	{ "l2_size",			KSTAT_DATA_UINT64 },
 	{ "l2_hdr_size",		KSTAT_DATA_UINT64 },
-	{ "memory_throttle_count",	KSTAT_DATA_UINT64 }
+	{ "memory_throttle_count",	KSTAT_DATA_UINT64 },
+	{ "arc_no_grow",		KSTAT_DATA_UINT64 },
+	{ "arc_tempreserve",		KSTAT_DATA_UINT64 },
+	{ "arc_loaned_bytes",		KSTAT_DATA_UINT64 },
+	{ "arc_meta_used",		KSTAT_DATA_UINT64 },
+	{ "arc_meta_limit",		KSTAT_DATA_UINT64 },
+	{ "arc_meta_max",		KSTAT_DATA_UINT64 },
 };
 
 #define	ARCSTAT(stat)	(arc_stats.stat.value.ui64)
@@ -399,13 +411,12 @@ static arc_state_t	*arc_l2c_only;
 #define	arc_c		ARCSTAT(arcstat_c)	/* target size of cache */
 #define	arc_c_min	ARCSTAT(arcstat_c_min)	/* min target cache size */
 #define	arc_c_max	ARCSTAT(arcstat_c_max)	/* max target cache size */
-
-static int		arc_no_grow;	/* Don't try to grow cache size */
-static uint64_t		arc_tempreserve;
-static uint64_t		arc_loaned_bytes;
-static uint64_t		arc_meta_used;
-static uint64_t		arc_meta_limit;
-static uint64_t		arc_meta_max = 0;
+#define	arc_no_grow	ARCSTAT(arcstat_no_grow)
+#define	arc_tempreserve	ARCSTAT(arcstat_tempreserve)
+#define	arc_loaned_bytes	ARCSTAT(arcstat_loaned_bytes)
+#define	arc_meta_used	ARCSTAT(arcstat_meta_used)
+#define	arc_meta_limit	ARCSTAT(arcstat_meta_limit)
+#define	arc_meta_max	ARCSTAT(arcstat_meta_max)
 
 typedef struct l2arc_buf_hdr l2arc_buf_hdr_t;
 
@@ -3499,6 +3510,7 @@ arc_init(void)
 
 	/* limit meta-data to 1/4 of the arc capacity */
 	arc_meta_limit = arc_c_max / 4;
+	arc_meta_max = 0;
 
 	/* Allow the tunable to override if it is reasonable */
 	if (zfs_arc_meta_limit > 0 && zfs_arc_meta_limit <= arc_c_max)