dbuf_stats: show flag pairs for ARC headers

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.

module/zfs/dbuf_stats.c

@@ -22,6 +22,7 @@
 #include <sys/zfs_context.h>
 #include <sys/dbuf.h>
 #include <sys/dmu_objset.h>
+#include <zfs_pretty.h>
 
 /*
  * Calculate the index of the arc header for the state, disabled by default.
@@ -48,7 +49,7 @@ dbuf_stats_hash_table_headers(char *buf, size_t size)
 	(void) snprintf(buf, size,
 	    "%-105s | %-119s | %s\n"
 	    "%-16s %-8s %-8s %-8s %-8s %-10s %-8s %-8s %-5s %-5s %-7s %3s | "
-	    "%-5s %-5s %-9s %-6s %-8s %-12s "
+	    "%-5s %-5s %-20s %-6s %-8s %-12s "
 	    "%-6s %-6s %-6s %-6s %-6s %-8s %-8s %-8s %-6s | "
 	    "%-6s %-6s %-8s %-8s %-6s %-6s %-6s %-8s %-8s\n",
 	    "dbuf", "arcbuf", "dnode", "pool", "objset", "object", "level",
@@ -74,9 +75,12 @@ __dbuf_stats_hash_table_data(char *buf, size_t size, dmu_buf_impl_t *db)
 
 	__dmu_object_info_from_dnode(dn, &doi);
 
+	char flagstr[128];
+	zfs_pretty_arc_flag_pairs(abi.abi_flags, flagstr, sizeof (flagstr));
+
 	nwritten = snprintf(buf, size,
 	    "%-16s %-8llu %-8lld %-8lld %-8lld %-10llu %-8llu %-8llu "
-	    "%-5d %-5d %-7lu %-3d | %-5d %-5d 0x%-7x %-6lu %-8llu %-12llu "
+	    "%-5d %-5d %-7lu %-3d | %-5d %-5d %-20s %-6lu %-8llu %-12llu "
 	    "%-6lu %-6lu %-6lu %-6lu %-6lu %-8llu %-8llu %-8d %-6lu | "
 	    "%-6d %-6d %-8lu %-8lu %-6llu %-6lu %-6lu %-8llu %-8llu\n",
 	    /* dmu_buf_impl_t */
@@ -95,7 +99,7 @@ __dbuf_stats_hash_table_data(char *buf, size_t size, dmu_buf_impl_t *db)
 	    /* arc_buf_info_t */
 	    abi.abi_state_type,
 	    abi.abi_state_contents,
-	    abi.abi_flags,
+	    flagstr,
 	    (ulong_t)abi.abi_bufcnt,
 	    (u_longlong_t)abi.abi_size,
 	    (u_longlong_t)abi.abi_access,