diff options
Diffstat (limited to 'module/zfs/include/sys/refcount.h')
| -rw-r--r-- | module/zfs/include/sys/refcount.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/module/zfs/include/sys/refcount.h b/module/zfs/include/sys/refcount.h index d3fe7b1f8..bc3ade80f 100644 --- a/module/zfs/include/sys/refcount.h +++ b/module/zfs/include/sys/refcount.h @@ -19,15 +19,12 @@ * CDDL HEADER END */ /* - * Copyright 2007 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. + * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. */ #ifndef _SYS_REFCOUNT_H #define _SYS_REFCOUNT_H -#pragma ident "%Z%%M% %I% %E% SMI" - #include <sys/inttypes.h> #include <sys/list.h> #include <sys/zfs_context.h> @@ -91,6 +88,11 @@ typedef struct refcount { atomic_add_64_nv(&(rc)->rc_count, number) #define refcount_remove_many(rc, number, holder) \ atomic_add_64_nv(&(rc)->rc_count, -number) +#define refcount_transfer(dst, src) { \ + uint64_t __tmp = (src)->rc_count; \ + atomic_add_64(&(src)->rc_count, -__tmp); \ + atomic_add_64(&(dst)->rc_count, __tmp); \ +} #define refcount_init() #define refcount_fini() |