ddt: reduce DDT_NAMELEN

This is the buffer size passed to ddt_object_name(), to expand the DMU_POOL_DDT format. That format inserts the table checksum, class and type names, which as I write this are max 6, 9 and 3, respectively. Reviewed by: Brian Behlendorf <[email protected]> Signed-off-by: Rob Norris <[email protected]> Sponsored-by: https://despairlabs.com/sponsor/ Closes openzfs#15908
openzfsonosx · Feb 26, 2024 · 8f2f6cd · 8f2f6cd
1 parent c00c085
commit 8f2f6cd
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/include/sys/ddt_impl.h b/include/sys/ddt_impl.h
@@ -66,7 +66,12 @@ extern void ddt_stat_update(ddt_t *ddt, ddt_entry_t *dde, uint64_t neg);
  * outside of the DDT implementation proper, and if you do, consider moving
  * them up.
  */
-#define	DDT_NAMELEN	110
+
+/*
+ * Enough room to expand DMU_POOL_DDT format for all possible DDT
+ * checksum/class/type combinations.
+ */
+#define	DDT_NAMELEN	32
 
 extern uint64_t ddt_phys_total_refcnt(const ddt_entry_t *dde);