int64_t zfs_refcount_remove_many(zfs_refcount_t *, uint64_t, void *);
void zfs_refcount_transfer(zfs_refcount_t *, zfs_refcount_t *);
void zfs_refcount_transfer_ownership(zfs_refcount_t *, void *, void *);
+void zfs_refcount_transfer_ownership_many(zfs_refcount_t *, uint64_t,
+ void *, void *);
boolean_t zfs_refcount_held(zfs_refcount_t *, void *);
boolean_t zfs_refcount_not_held(zfs_refcount_t *, void *);
atomic_add_64(&(src)->rc_count, -__tmp); \
atomic_add_64(&(dst)->rc_count, __tmp); \
}
-#define zfs_refcount_transfer_ownership(rc, current_holder, new_holder) (void)0
-#define zfs_refcount_held(rc, holder) ((rc)->rc_count > 0)
+#define zfs_refcount_transfer_ownership(rc, ch, nh) ((void)0)
+#define zfs_refcount_transfer_ownership_many(rc, nr, ch, nh) ((void)0)
+#define zfs_refcount_held(rc, holder) ((rc)->rc_count > 0)
#define zfs_refcount_not_held(rc, holder) (B_TRUE)
#define zfs_refcount_init()
* refcount ownership to the hdr since it always owns
* the refcount whenever an arc_buf_t is shared.
*/
- zfs_refcount_transfer_ownership(&hdr->b_l1hdr.b_state->arcs_size,
- buf, hdr);
+ zfs_refcount_transfer_ownership_many(&hdr->b_l1hdr.b_state->arcs_size,
+ arc_hdr_size(hdr), buf, hdr);
hdr->b_l1hdr.b_pabd = abd_get_from_buf(buf->b_data, arc_buf_size(buf));
abd_take_ownership_of_buf(hdr->b_l1hdr.b_pabd,
HDR_ISTYPE_METADATA(hdr));
* We are no longer sharing this buffer so we need
* to transfer its ownership to the rightful owner.
*/
- zfs_refcount_transfer_ownership(&hdr->b_l1hdr.b_state->arcs_size,
- hdr, buf);
+ zfs_refcount_transfer_ownership_many(&hdr->b_l1hdr.b_state->arcs_size,
+ arc_hdr_size(hdr), hdr, buf);
arc_hdr_clear_flags(hdr, ARC_FLAG_SHARED_DATA);
abd_release_ownership_of_buf(hdr->b_l1hdr.b_pabd);
abd_put(hdr->b_l1hdr.b_pabd);
}
void
-zfs_refcount_transfer_ownership(zfs_refcount_t *rc, void *current_holder,
- void *new_holder)
+zfs_refcount_transfer_ownership_many(zfs_refcount_t *rc, uint64_t number,
+ void *current_holder, void *new_holder)
{
reference_t *ref;
boolean_t found = B_FALSE;
for (ref = list_head(&rc->rc_list); ref;
ref = list_next(&rc->rc_list, ref)) {
- if (ref->ref_holder == current_holder) {
+ if (ref->ref_holder == current_holder &&
+ ref->ref_number == number) {
ref->ref_holder = new_holder;
found = B_TRUE;
break;
mutex_exit(&rc->rc_mtx);
}
+void
+zfs_refcount_transfer_ownership(zfs_refcount_t *rc, void *current_holder,
+ void *new_holder)
+{
+ return (zfs_refcount_transfer_ownership_many(rc, 1, current_holder,
+ new_holder));
+}
+
/*
* If tracking is enabled, return true if a reference exists that matches
* the "holder" tag. If tracking is disabled, then return true if a reference