Distributed Spare (dRAID) Feature

[mirror_zfs.git] / module / zfs / abd.c

diff --git a/module/zfs/abd.c b/module/zfs/abd.c
index 6018a42ca0d8347b423e5ff8af74bdfaceae9dea..68d4aa5f5cb4e57742bc0eda055faf219b90dc68 100644 (file)
--- a/module/zfs/abd.c
+++ b/module/zfs/abd.c
@@ -781,16 +781,17 @@ int
 abd_iterate_func(abd_t *abd, size_t off, size_t size,
     abd_iter_func_t *func, void *private)
 {
-       int ret = 0;
        struct abd_iter aiter;
-       boolean_t abd_multi;
-       abd_t *c_abd;
+       int ret = 0;
+
+       if (size == 0)
+               return (0);
 
        abd_verify(abd);
        ASSERT3U(off + size, <=, abd->abd_size);
 
-       abd_multi = abd_is_gang(abd);
-       c_abd = abd_init_abd_iter(abd, &aiter, off);
+       boolean_t abd_multi = abd_is_gang(abd);
+       abd_t *c_abd = abd_init_abd_iter(abd, &aiter, off);
 
        while (size > 0) {
                /* If we are at the end of the gang ABD we are done */
@@ -920,6 +921,9 @@ abd_iterate_func2(abd_t *dabd, abd_t *sabd, size_t doff, size_t soff,
        boolean_t dabd_is_gang_abd, sabd_is_gang_abd;
        abd_t *c_dabd, *c_sabd;
 
+       if (size == 0)
+               return (0);
+
        abd_verify(dabd);
        abd_verify(sabd);