fixup to "Elide locking db_data and db_mtx where it seems safe"

asomers · asomers · commit 8ce6b1762287 · 2025-09-22T11:48:59.000-06:00
On Linux, assert_db_data_contents_locked can't take the db pointer as a
const pointer, because the rwsem_is_locked function requires mutable
access .
diff --git a/module/zfs/dbuf.c b/module/zfs/dbuf.c
@@ -297,7 +297,11 @@ assert_db_data_addr_locked(const dmu_buf_impl_t *db)
 }
 
 void
+#ifdef __linux__
+assert_db_data_contents_locked(dmu_buf_impl_t *db, boolean_t writer)
+#else
 assert_db_data_contents_locked(const dmu_buf_impl_t *db, boolean_t writer)
+#endif
 {
 	/* 
 	 * db_rwlock protects indirect blocks and the data block of the meta

Original file line number	Diff line number	Diff line change
`@@ -297,7 +297,11 @@ assert_db_data_addr_locked(const dmu_buf_impl_t *db)`
`297`	`297`	`}`
`298`	`298`
`299`	`299`	`void`
	`300`	`+#ifdef __linux__`
	`301`	`+assert_db_data_contents_locked(dmu_buf_impl_t *db, boolean_t writer)`
	`302`	`+#else`
`300`	`303`	`assert_db_data_contents_locked(const dmu_buf_impl_t *db, boolean_t writer)`
	`304`	`+#endif`
`301`	`305`	`{`
`302`	`306`	`/*`
`303`	`307`	`* db_rwlock protects indirect blocks and the data block of the meta`